Owner's Manual

CRAFTSMAN

40"- 2 STAGE SNOW THROWER

TRACTOR ATTACHMENT

Model No. 486.24839

CAUTION:

Before using this product, read this manual and follow all Safety Rules and Operating Instructions.

Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

???Safety

???Assembly

???Operation

???Maintenance

???Parts

pRINTED IN U.S.A.

LIMITED ONEYEAR WARRANTY ON 40" 2-STAGE SNOWTHROWER

For one year from the date of purchase, when this snow thrower is maintained and lubricated according to the operating and maintenance instructions in the owner'smanual, Sears will repair any defect in material or workmanship free of charge. If this snow thrower is used for commercial or rental purposes, this warranty applies for only 90 days from the date of purchase.

This warranty does not cover repairs necessary because of operator negligence or abuse, including the failure to maintain the equipment according to instructions contained in the owner'smanual.

WARRANTY SERVICE iS AVAILABLE BY CONTACTING THE NEAREST SEARS SERVICE CENTER/DEPARTMENT

IN THE UNITED STATES.

This warranty applies onty while this product is in the United States.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Sears, Roebuck and Co. D/817 WA. Hoffman Estates, Chicago, IL 60179

These accessories were available when the unit was purchased. They are also available at most Sears retail outlets

and service centers. Most Sears stores can order repair parts for you when you provide the model numbers of your tractor and snow thrower.

You should record both the serial number and the date of

purchase and keep in a safe place for future reference.

DATE OF PURCHASE:

Any power equipment can cause injury if operated improperly or if the user does not understand hew to operate the equipment. Exercise caution at all times, when using power equipment.

???Read this owner's manual carefully and know how to operate your snow thrower and how to stop the unit and disengage the controls quickly.

???Never allow children to operate the equipment.

???Never allow adults to operate the equipment without proper instruction.

???Keep the area of operation clear of all persons, especially small children, and pets.

???Thoroughly inspect the area where the equipment is to be used and remove all door mats, sleds, boards, wires and other foreign objects.

???Disengage all clutches and shift into neutral before starting engine.

???Do not operate equipment without wearing ad- equate winter outer garments.

???Wear substantial footwear which will protect feet and improve footing on slippery surfaces.

???Check fuel before starting the engine. Do not remove the fuel cap or fill the fuel tank while the engine is running or hot. Do not fill the fuel tank indoors. Gasoline is an extremely flammable fuel.

???Make sure the snow thrower height is adjusted to clear the type surface it will be used on.

???Do not use the snow thrower without the rear weight attached to the tractor.

???Never make any adjustments while the engine is running.

???Always wear safety glasses or eye shield during operation or while performing and adjustment or repair.

???Do not place hand or feet near rotating parts. Keep clear of the discharge opening at all times.

???Use extreme caution when operating on or crossing gravel surfaces.

???Do not carry passengers.

???After striking a foreign object, stop the engine, remove the wire from the spark plug and then thoroughly inspect the snow thrower for damage.

Repair any damage before restarting and operating the snow thrower.

???If the snow thrower starts to vibrate abnormally, stop the engine immediately and check for the cause. Vibration is generally a warning of trouble.

Look for this symbol to point out important

Become alert!! Your safety is involved.

Stop the engine whenever you leave the operating position, before unclogging the snow thrower or making any adjustments or inspections.

Take all possible precautions when leaving the unit unattended. Disengage the attachment clutch lever or switch, lower the snow thrower, shift into neutral, set the parking brake, stop the engine and remove the key.

When cleaning, repairing or inspecting, make certain all moving parts have stopped. Disconnect the spark plug wire and keep it away from the plug to prevent accidental starting.

Do not run engine indoors except when transport- ing the snow thrower in or out of the building. Open the outside doors. Exhaust fumes are dangerous. Do not clear snow across the face of slopes. Exercise extreme caution when changing direction on slopes. Do not attempt to clear steep slopes. Refer to the slope guide on page 27 of this manual. Never operate the snow thrower without guards, plates or other safety protection devices in place. Never operate the snow thrower near glass enclo- sures, automobiles, window wells, drop offs etc. without proper adjustment of the snow thrower discharge angle.

Never direct discharge at bystanders or allow anyone in front of the snow thrower.

Never run the snow thrower into material at high speeds.

Do not overload the machine capacity by attempt- ing to clear snow at too fast a rate.

Never operate the machine at high transport speed on slippery surfaces. Look behind and use care when backing.

Watch for traffic and stay alert when crossing or operating near roadways.

Disengage power to the snow thrower when trans- porting or when not in use.

Use only attachments and accessories approved by the manufacturer of the snow thrower (such as wheel weights, counter weights, cabs etc.)

Never operate the snow thrower without good visibility or light.

SHOWN ACTUAL SIZE

SPARE PARTS BAG

Store these two bolts and nuts In a safe place until needed. (See page 20.)

NOT SHOWN ACTUAL SIZE

/CC

.EE

A 1 Hex Bolt, 1/2" x 1-1/4"

B4 Hex Bolt, 3/8" x 1"

C2 , Hex Bolt, 5/16" x 1-3/4"

D6 Hex Bolt, 1/4" x 1"

E2 Slotted Truss Head Bolt, 3/8" x 1"

F4 Carriage Bolt, 3/8" x 1"

J2 Carriage Bolt, 5/16" x 3/4"

K4 Shoulder Bolt, 3/8" x 5/8"

L10 Lock Washer, 3/8"

M14 Lock Washer, 5/16"

N1 Lock Washer, 1/2"

O2 Washer, 1/2"

P7 Washer, 1/4"

Q2 Washer, 5/16"

R2 Bowed Washer

CC1 Tarp Strap

DD1 Spring

EE3 Chute Keeper

FF1 Chain, Tensioning

GG1 Trunnion

HH 1 Spacer

II2 Lock Pin

JJ1 Plastic Cap

KK2 Nylon Tie

16

TOOLS REQUIRED FOR ASSEMBLY

(2)7/16" Wrenches

(2)1/2'Wrenches

(2)9/16" Wrenches

(2)3/4" Wrenches

(1)Knife

ADDITIONAL ITEMS REQUIRED

General Purpose Grease

REMOVAL OF PARTS FROM CARTON

???Remove all parts and hardware packages from the carton. Lay out parts and hardware and identify using the illustrations on pages 4 and 5.

NOTE: Not all of the supplied parts and hardware will be needed for your particular tractor. Unneeded items may be discarded after you have completed assembly.

&CAUTION: Before starting to assemble the snow thrower, remove the spark plug wire(s), set the parking brake and

remove the key from the tractor ignition.

TRACTOR PREPARATION

Before performing these instructions, refer to the Service and Adjustments section of your tractor owner's manual for specific safety instructions.

???Allow engine, muffler and exhaust deflector to cool before beginning.

???Remove any front or rear attachment which is mounted to your tractor.

???Remove the mower deck. Refer to your tractor owner's manual for removal instructions. Mark all loose parts and save for re-assembly.

???Remove the tractor hood and grill assembly. Refer to your tractor owner's manual for removal instructions.

ASSEMBLY OF SIDE PLATES TO TRACTOR

Right hand (R,H.) and left hand (L.H.) side of the tractor

are determined from the operators position while seated on the tractor.

TRACTORS WITH FRAME MOUNTED FRONT SUSPENSION BRACKETS (See page 7 for tractors with axle mounted front suspension brackets.)

???Remove two bolts from each side of the tractor frame as shown in figure 1.

REMOVE BOLTS FROM THESE HOLES

FRONT

SUSPENSION

BRACKET

Assemble the R.H. Side Plate (marked "R") to the now empty holes in the right side of the tractor frame. Use two 3/8" x 1" hex bolts and 3/8" lock washers as shown in figure 2. Repeat for the L.H. side.

NOTE: If the side plates are later removed from the tractor frame, bolts must be assembled back into the empty holes in the frame.

3_"LOCK

WASHER

3/8"x1"

HEXBOLT

ITEMS REMOVED FROM TRACTOR

6

Assemble a shoulder bolt, a 3/8" lock washer and a 3/8" hex lock nut to the bottom hole in each side plate. See figure 3.

Proceed to page 8.

3_" HEX LOCK NUT

Attach the R.H. Side Plate (marked "R") to the right side of the tractor frame as shown in figure 5. For the front hole use a 3/8" x 1" hex bolt, a 3/8" lock washer, a 1/2" flat washer and a 3/8" hex lock nut. Use the flat washer as a shim between the frame and the side plate. For the rear hole use a 3/8" x 1" hex bolt, and a 3/8" lock washer. Repeat for the L.H. side.

NOTE: Depending on the tractor model, the bolt may insert freely into the front hole or it may screw into the hole. If the hole is not threaded, the bolt will form threads as it is screwed in.

_8"LOCK

WASHER

R. H. SIDE PLATE

3/8" SHOULDER BOLT

TRACTORS WITH AXLE MOUNTED FRONT

SUSPENSION BRACKETS

???Remove the bolt from the hole on each side of the tractor frame as shown in figure 4.

REMOVE BOLT FROM

THIS HOLE

FRONT

SUSPENSION

BRACKET

3_"LOCKI_"FLAT

WASHERWASHER

3/8"HEX

LOCK NUT

3/8" x 1"

HEX BOLT

R.H. SIDE

PLATE

???Assemble a shoulder bolt, a 3/8" lock washer and a 3/8" hex lock nut to the bottom hole in each side plate. See figure 6.

3/8"HEXLOCKNUT

_8"LOCK

WASHER

R.H. SlDE PLATE

3/8" SHOULDER BOLT

7

INSTALLING HANGER BRACKETS

For better clearance, lower the tractor'ssuspension arms using the attachment lift lever.

On Tractors With Foot Rest Brackets (Figure 7)

???Remove the bolt and nut that fasten the L.H. and R.H. foot rest brackets to the frame. See figure 7.

???Attach the L,H. Hanger Bracket (marked "L') to the inside of the tractor frame using two 3/8" x 1" carriage bolts, 3/8" lock washers and 3/8" hex lock nuts. The bolt heads go on the inside of the tractor frame. Repeat for the R.H, side. See figure 7.

On Tractors Without Foot Rest Brackets (Figure 8)

???Find the empty hole beneath the foot rest, Attach the LH. Hanger Bracket (marked "L") to the inside of the frame using a 3/8" x 1" carriage bolt (head to inside), a 3/8" lock washer and a 3/8" hex lock nut. See figure 8. Repeat for the R,H. side.

3/8" LOC_

WASHER_3/8HEX

LOCK NUT

I

SUSPENSION ARM

CARRIAGE BRACKET"_

BOLT

INSTALLING SHOULDER BOLTS

All Tractors

???Remove the bolt, washer and nut which fasten the sway bar bracket to the L.H. side of the tractor frame. Replace with a shoulder bolt and a 3/8" hex lock nut as shown in figure 9.

Assemble a shoulder bolt and 3/8" hex lock nut to the R.H. side of the tractor frame, using the first empty hole to the rear of the R.H. hanger bracket. See figure 10.

Replace the engine pulley keeper on your tractor with the new pulley keeper supplied with the snow blower. Attach the keeper to the frame using the original bolt, washer and nut. See figure 10. NOTE: Some tractors may already be equipped with an identical pulley keeper.

ORIGINAL BOLT,

NUT AND WASHER

INSTALLING CLUTCH/IDLER ASSEMBLY

This section covers the installation of the Clutch/Idler assembly to tractors with attachment clutches that are either rod operated (p, 9), cable operated (p. 10) or electric (p. 12). Use the appropriate instructions for your tractor.

ROD OPERATED ATTACHMENT CLUTCHES

???Move the attachment clutch lever on the dash panel to the disengaged (down) position.

Screw the trunnion onto the end of the snow thrower engagement rod as shown in figure 11.

Locate the clutch arm which is found underneath the right hand side the tractor, just to the inside of

the suspension arm. This is the arm that the mower clutch rod was connected to. The arm moves

forward and backward as the attachment clutch lever on the dash panel is moved.

Position the engagement rod to the inside of the clutch arm and insert the drilled end of the rod

through the arm. Secure with a 5/64" hairpin cotter. See figure 11.

ENGAGEMENTROD

TRACTOR'SCLUTCH ARM

/

5/64" HAIRPIN

COTTER

\

SUSPENSION ARM

Be sure that the loose end of the engagement rod is lifted up toward the front of the tractor (as shown in figure 12) when performing the next operation.

You can temporarily support the rod using a rubber band tied to the engine pulley keeper.

Attach the snow thrower's clutch/idler assembly to the tractor frame by sliding the notched arms at the rear of the assembly onto the two shoulder bolts assembled to the inside of the tractor frame. Lift the front of the assembly, fitting the sides into the R.H. and L.H. hanger brackets. Attach the assem- bly to the brackets using two pivot lock pins and 1/8" hairpin cotters. See figure 12.

1/8" HAIRPIN COTTER

PIVOT LOCK PIN

ENGAGEMENT

ROD

Make sure the attachment clutch lever on the dash panel is in the disengaged (down) position.

Pivot the upper idler arm so that it rests against the stop bolt and is pointing toward the front as shown in figure 13. Screw the trunnion along the threads of the engagement rod until it is aligned at the front end of the idler arm slot. Attach the trunnion to the slot using the 3/8" flat washer and a 5/64" hairpin cotter. See figure 13.

IDLER ARM

3/8" FLAT

_ WASHER

5/64" HAIRPIN

COTTER

Assemblethe short "V" belt onto the engine pulley and then onto the large pulley on top of the clutch/ idler assembly. The belt must be placed to the inside of the engine pulley keeper, the idler pulley and the keeper bolt located beside the large pulley. See figure 14.

IMPORTANT: Do Not assemble the "V" belt around the outside of the enaine pulley keeper or the keeper bolt.

Hold this drawing above you while viewing the Clutch/Idler Assembly from underneath the tractor, Right and left in the drawing will be the reverse of the viewer's right and left.

ENGINE

PULLEY

BOLT

FIGURE 14VIEWED FROM UNDERNEATH

???Proceed to page 13.

CABLE OPERATED A'n'ACHMENT CLUTCHES

Assemble the cable bracket to the clutch/idler assembly using two 5/16" x 3/4" carriage bolts, 5/16" lock washers and 5/16" hex Iocknuts. Use the two front holes in the cable bracket if your tractor has a 42" mower deck. Use the two rear holes if your tractor has a 46" mower deck. See figure 15.

5/16" x 3/4"

CARRIAGE BOLT

5/16" LOCK

WASHER

;/16" HEX

LOCK NUT

FIGURE 15

???Move the attachment clutch lever on the dash panel to the disengaged (down) position.

???Lay the clutch/idler assembly beneath the tractor.

???Attach the tractor's clutch cable to the cable bracket. Secure the cable housing guide (groove down) to the cable bracket using the original collar and retainer spring removed from the mower deck. See figure 16.

???Place a spacer on the welded pin on the idler arm. Hook the end of the ctutch spring over the pin and secure it with a 1/4" washer and a 5/64" hair cotter pin. See figure 16.

5/64" HAIR

COTTER PIN

SPACER

/

TRACTOR'S

CLUTCH CABLE

FIGURE 16

10

Attach the clutch/idler assembly to the tractor frame by sliding the notched arms at the rear of the assembly onto the two shoulder bolts assembled

to the inside of the tractor frame. Lift the front of the assembly, fitting the sides into the R.H. and L.H. hanger brackets. Attach the assembly to the brackets using two pivot lock pins and 1/8" hairpin cotters. See figure 17.

1/8" HAIRPIN COTI'ER

PIVOT LOCK PIN

Assemble the short "V" belt onto the engine pulley and then onto the large pulley on top of the clutch/ idler assembly. The belt must be placed to the inside of the engine pulley keeper, the idler pulley and the keeper bolt located beside the large pulley. See figure 18.

IMPORTANT: Do Not assemble the "V" belt around the outside of the engine pulley keeper or the keeper bolt.

Hold this drawing above you while viewing the Clutch/Idler Assembly from underneath the tractor. Right and left in the drawing will be the reverse of the viewer's right and left,

b

_j 4PULLEY

f

IDLER

FIGURE 18VIEWED FROM UNDERNEATH

??? Proceed to page 13.

11

ELECTRIC A'n'ACHMENT CLUTCHES

???Turn the clutch/idler assembly upside down and place the extra tensioning chain through the left front hole as shown in figure 19.

/

TENSIONING CHAIN

FIGURE 19

???Attach the clutch/idler assembly to the tractor frame by sliding the notched rear arms of the assembly onto the two shoulder bolts placed on the inside of the tractor frame. Lift the front of the assembly so that the sides fit inside the R.H. and L.H. hanger brackets. Attach the assembly to the brackets

using two pivot lock pins and 1/8" hairpin cotters. See figure 21.

1/8" HAIRPIN COTTER

PIVOT LOCK PIN

Hook the loose spring through the end of the tensioning chain. See figure 20.

Hook the other end of the spring onto the bottom of the bolt and nut which secure the idler pulley to the upper idler arm. Hold the bolt head and assemble a 3/8" hex lock nut onto the bolt, leaving it loose enough for the spring to pivot freely between the two nuts. See figure 20.

Attach a 3/32" hairpin cotter to the chain, placing it in the fifth link from the spring. See figure 20.

CHAIN

L..H.SIDE)

3/32" HAIR

COTTER PIN

Assemble the short "V" belt onto the engine pulley and then onto the large pulley on top of the clutch/ idler assembly. The belt must be placed to the inside of the engine pulley keeper, the idler pulley and the keeper bolt located beside the large pulley. See figure 22 on page 13..

Place tension on the belt by pulling the left side tensioning chain out as far as the 5/64" hairpin

cotter will allow. Secure the chain in this position by inserting a 1/8" hairpin cotter through the chain.

See figure 22 on page 13.

IMPORTANT: Do Not assemble the "V" belt around the outside of the engine pulley keeper or the keeper bolt.

12

Hold this drawing above you while viewing the Clutch/Idler Assembly from underneath the tractor. Right and left in the drawing will be the reverse of the viewer's right and left.

IDLER

KEEPER

BOLT

L.

FIGURE 22VIEWED FROM UNDERNEATH

ASSEMBLY OF THE SNOW THROWER

Place the lift handle into the lift bracket on the right side of the snow thrower. Fasten the handle to the bracket using two 5/16" x 1-3/4" hex bolts, 5/16" lock washers and 5/16" hex nuts. See figure 23.

LIFT HANDLE

\

NOTE: Be sure the lift release cable's plastic covering remains inserted into the trigger assembly while performing the next step.

???Push the lift handle down into the locked position. Insert the end of the cable wire into the hole in the

lift rod. Place the threaded fitting into the slot in the lift bracket, with one hex nut above and one hex

nut and the lock washer below the slot. Tighten the nuts, adjusting them to eliminate slack in the cable wire. See figure 24. Refer also to the Service and Adjustments section on page 20 in this manual.

HINT: For easier assembly of the lift release cable, tilt the snow thrower forward onto the spiral auger.

LIFT RELEASE

p1,.._ CABLE

_

13

???Tilt the snow thrower back down to the ground.

???Remove the nylon tie which fastens the auger drive belt to the discharge housing, leaving the belt assembled around the pulleys.

???Remove the nylon tie which fastens the chute crank rod to the crank rod support tube.

???Assemble the crank rod support tube to the bracket on the left side of the thrower housing using two 5/16" x 1-1/4" carriage bolts, 5/16" lock washers and 5/16" hex nuts. See figure 25.

5/16" HEX NUT ""

Attach the chute crank rod assembly brackets to the plastic bracket on the left side of the thrower housing. Align the chute crank bracket beneath the rod support bracket and assemble both to the plastic bracket using two 5/16" x 1" carriage bolts, 5/16" flat washers, 5/16" lock washers and 5/16" hex nuts. Do not tighten yet. See figure 27.

1/4"FLAT BRACKET

CHUT',KEE,ER

14

A'I-rACHING SNOW THROWER TO TRACTOR

NOTE: An additional person's help may be required to mount the snow thrower to the front of the tractor.

???Place the tractor and snow thrower on a flat, level surface so that the tractor can be rolled forward to attach the snow blower.

???Remove the Attachment Pin from the snow thrower.

Extend the belt out behind the snow thrower, making sure the belt is still looped over the top of the large drive pulley and underneath the two idler pulleys. The "V" side of the belt must be seated in the grooves of all three pulleys.

???Roll the tractor up behind the snow thrower, center- ing it between the snow thrower's mounting plates.

Raise the rear of the snow thrower by lifting up on the lift handle until the notches in the mounting plates align with the shoulder bolts in the tractor's side plates. Guide the bolts into the notches.

To ease the assembly of the auger drive belt, delay the installation of the attachment pin shown in figure 29 until you have assembled the belt as instructed for figures 30 and 31.

A'n'ACHMENT PIN

SIDE

PLATE

INSTALLING THE AUGER BELT

???The auger belt comes preassembled to the pulleys on the snow thrower housing. Make sure the belt passes over the top of the auger pulley and then twists 1/4 turn to pass underneath each side idler pulley. The "V" side of the belt must mate with the grooves of the pulleys. See figure 30.

FIGURE 30

Push the lift handle down to increase slack in the belt (attachment pin must first be removed).

Remove the 1/8" hairpin cotter that secures the end of the idler arm spring to the right side of the clutch idler assembly. Swing the idler arm to the left side. See figure 31.

Place the auger belt around the rear pulley and between the two pulleys on the idler arm. The "V" side of the belt must be seated in the grooves of the "V" pulleys. See figure 31.

Hold this drawing above you while viewing the

Clutch/Idler Assembly from underneath the tractor. Right and left in the drawing will be the reverse of the viewer's right and left.

1/8" HAIRPIN

FIGURE 31VIEWED FROM UNDERNEATH

15

INSTALLING THE ATTACHMENT PIN

Lift the front of the snow blower to align the holes in the mounting plates and the side plates. From the left side of the tractor install the attachment pin through the holes, securing it with the 1/8" hairpin cotter. Refer back to figure 29 on page 15.

SETrlNG THE AUGER BELT TENSION

Pull the tensioning chain until the end of the spring is pulled through the hole in the side of the Clutch/ Idler assembly. Install the 1/8" hairpin cotter through the end of the spring, securing it on the outside of the Clutch/Idler assembly. See figure 32.

IMPORTANT: For correct belt tension, the 1/8" hairpin cotter must attach to the end of the spring, not to the chain.

Hold this drawing above you while viewing the Clutch/idler Assembly from underneath the tractor. Right and left in the drawing will be the reverse of the viewer's right and left.

LEFT SIDE

OF

TRACTOR

FLAT

PULLEY

1/8"

HAIRPIN

END OF

SPRING

FIGURE 32VIEWED FROM UNDERNEATH

ATTACHING WEIGHT TRAY TO TRACTOR

Loosen the top hex bolt on each side of the tractor frame at the rear. Assemble the slotted end of the side braces down onto the loosened bolts. Do not tighten yet. See figure 33.

NOTE: If there is interference with the hex bolt when using tire chains with extra wide tires, assemble the side braces to the tractor frame using the alternate instructions with figure 35 on page 17.

Place the weight tray on top of the tractor hitch and fasten the side braces to it using two 5/16" x 1" carriage bolts, 5/16" lock washers and 5/16" hex nuts. Do not tighten yet. See figure 33.

???Fasten the weight tray to the tractor hitch using a 1/2" x 1-1/4" hex bolt, a 1/2" lock washer and a 1/2" hex nut. Do not tighten yet. See figure 33.

Fasten the cross brace to the side braces using two 5/16" x 1" carriage bolts, 5/16" lock washers

and 5/16" hex nuts. See figure 33. Tighten all loose bolts at this time.

/H /,'/;.LOCK':

WAS.ER

gk"RlAG f S'DEBRAO

BOLT|

WEIGHT TRAY

FIGURE 33

16

??? Placethe plastic keg on the weight tray and fill with approximately 75 Ibs. of dry sand.

???Secure the keg with the rubber tarp strap hooked into the holes in the cross brace. See figure 34.

!

TARP STRAP

FIGURE 34

USE THESE INSTRUCTIONS IF HEX BOLT

INTERFERES WITH TIRE CHAINS

???Block up the rear of the tractor to allow removal of rear wheels.

Remove the rear wheels from the axle, retaining the square key and all other parts for reassembly.

???Remove the hex bolt from the top hole in the side of the tractor frame as shown in figure 35.

???Assemble the notched end of each side brace to the top hole in the each side of the tractor frame, using the provided 3/8-16 x 1" slotted truss head bolts. See figure 35.

???Reassemble the wheels onto the axle, making sure

to reassemble the square keys and all other parts which were removed.

???Assemble the weight tray to the side braces as instructed in figure 33 on page 16.

HOLE WITH HEX

BOLT REMOVED

TRUSS HEAD BOLT

_..,___ 3/8" x 1" SLOTTED

.._ SQUARE KEY

'_"_ SIDE BRACE

FIGURE 35

CHECKLIST

Before you operate your snow thrower, please review the following checklist to help ensure that

you will obtain the best performance from your snow thrower.

???All assembly instructions have been completed with all bolts and nuts properly tightened.

???Check the engine belt and the auger belt. Make sure they are routed properly around pulleys and inside all belt keepers.

???Check discharge chute for proper rotation.

???Check operation of tilt control for upper chute.

???Verify that the lift handle will lock into and release from the raised transport position. (Refer to the Service and Adjustments section,)

???Check skid shoe adjustment. (Refer to the Service and Adjustments section.)

The following additional items are available from

Sears to help enhance the performance of your snow thrower.

???Tire chains which can be installed to improve traction.

???Rear wheel weights which can be installed in addition to the rear weight tray to improve traction.

???Drift cutter bars which can be installed to help slice off the edges of tall drifts.

17

KNOW YOUR SNOW THROWER

Read this owner's manual and safety rules before operating your snow thrower,

Compare the illustration below with your snow thrower to familiarize yourself with the various controls and their locations.

CHUTE TILTHANDLE

CRANK ROD

CHUTE TILT HANDLE Pivots the Upper Chute up or down to control the angle and distance of discharge.

CRANK ROD Rotates the Lower and Upper Chutes to control the direction of discharge.

LIFT HANDLE Used to lift or lower the snow thrower to transport or operating position.

LIFT RELEASE TRIGGER Releases the lock which holds the snow thrower in the transport position

UPPER AND LOWER DISCHARGE CHUTE Controls

direction and height of snow discharge.

SCRAPER PLATE Replaceable plate that absorbs wear and impact from contact with ground.

SKID SHOE Controls amount of clearance between the scraper plate and the ground.

SPIRAL AUGER, R.H. & L.H. Feed snow to the impeller fan at the center of the housing.

BEFORE STARTING

???Use the end of assembly checklist to verify that all instructions have been properly completed.

???Make sure the skid shoes are adjusted to maintain adequate ground clearance between the snow thrower and the type of surface to be cleared. (Refer to the Service and Adjustments section.)

???Make sure the tractor engine has the correct oil for

winter operation (SAE 5W-30). Refer to tractor owner's manual.

HOW TO START YOUR SNOW THROWER

???The tractor should be sitting with the engine running at full throttle. Move the attachment clutch to the engaged position, starting the snow thrower before the tractor clutch is engaged.

HOW TO STOP YOUR SNOW THROWER

???To stop the snow thrower, disengage the tractor's attachment clutch lever for manual clutches or the

clutch switch for electric clutches. Refer to your tractor owner's manual

HOW TO USE YOUR SNOW THROWER

&CAUTION: Never direct discharge towards bystanders or windows. Do not

allow anyone in front of unit.

CONTROLLING SNOW DISCHARGE

???To control the direction snow is thrown, the dis- charge chute has 180 degrees of rotation. Turn the

crank rod clockwise to rotate the chute to the right. Turn the crank rod counterclockwise to rotate the

chute to the left.

To control the distance snow is thrown, the upper section of the discharge chute pivots up and down. Push forward on the chute tilt handle to pivot the chute down, decreasing the distance snow is thrown. Pull back on the handle to pivot the chute up, increasing the distance snow is thrown.

18

RAISING AND LOWERING

???To raise, push down on the lift handle until the snow thrower locks in the raised transport position.

???To lower, push down slightly on the lift handle and pull the trigger. With the trigger pulled, slowly lower the snow thrower until it reaches the ground.

&CAUTION: Do not operate the snow thrower without the rear weight attached

to the tractor to provide extra traction and stability.

REMOVING SNOW

Snow removal conditions vary greatly from light fluffy snowfall to wet heavy snow. Operating instructions must be flexible to fit the conditions encountered. The

operator must adapt the lawn tractor and snow thrower to depth of snow, wind direction, temperature and

???In extremely deep snow, raise the snow thrower from the ground to remove the top layer and drive forward only until the tractors front tires reach the uncleared bottom layer of snow. Depress the tractor'sclutch-brake pedal and allow the spiral auger to clear the snow. Reverse the tractor and lower the snow thrower to the ground. Drive the tractor forward until the snow again becomes too deep. Repeating this process into and out of drifts will eventually clear even the deepest of snow piles.

???If the snow thrower becomes clogged with snow or jammed with a foreign object, disengage the snow thrower immediately and shut off the tractor engine.

Unclog the snow thrower before resuming opera- tion.

surface conditions.

???Before beginning operation, thoroughly inspect the area of operation and remove all door mats, sleds, boards, wires and other foreign objects.

???The spiral auger speed is directly related to engine speed. For maximum snow removal and discharge, maintain high engine r.p.m. (full throttle). It is advisable to operate the lawn tractor at a slow

ground speed (1st gear) for safe and efficient snow removal.

???In deep, drifted or banked snow it will be necessary to use full throttle and a slow ground speed (1st gear). Drive forward into the snow, depress the tractor's clutch-brake pedal and allow the spiral auger to clear the snow. Repeat this method until a path is cleared. On the second pass, overlap the first enough to allow the snow thrower to handle

the snow without repeated stopping and starting of forward motion.

disengage snow thrower before

DANGER: Shut off engine and unclogging discharge chute. Unclog

using a wooden stick, not your hands.

OPERATING TIPS

e Discharge snow down wind whenever possible.

???To help prevent snow from sticking to the snow thrower, allow the snow thrower to reach outdoor

temperature before using it. A light coat of wax may also be applied to the inside surface of the snow

thrower housing and discharge chute.

???Use tire chains to improve traction.

???Use rear wheel weights to improve traction.

???Before the first snowfall, remove all stones, sticks

and other objects which could become hidden by the snow. Permanent obstacles should be marked

for visibility.

???Overlap each pass slightly to assure complete snow removal.

CUSTOMER RESPONSIBILITIES

???Read and follow the maintenance schedule and the maintenance procedures listed in this section.

MAINTENANCE SCHEDULE

Fill in dates as you complete regular service.

Check for loose fasteners

Check scraper and shoes for wear Cleanin 9

Lubrication Section

LUBRICATION

X

XX

X

X

Service Dates

???Oil all pivot points on the snow thrower.

???Oil the pivot points of the two idler arms on the clutch/idler assembly.

,Apply penetrating oil to the control cables of the discharge chute.

???Apply a good grade of spray lubricant to the trigger assembly and the chute tilt control assembly.

CHECK SCRAPER AND SHOES FOR WEAR

(Refer to figures 36 and 37 on page 20.)

???The scraper plate and skid shoes on the bottom of the snow thrower are subject to wear. To prevent damage to the spiral auger housing, replace plate and shoes before wear is excessive.

19

&the snow thrower, shut off the engine, remove the spark plug wire(s), set the

parking brake and remove the key from the tractor ignition.CAUTION: Before servicing or adjusting

REPLACING AUGER BELT

???Disengage the tractor's attachment clutch.

???Lower the snow thrower to the ground.

???Remove the attachment pin.

???Lock the snow thrower's lift handle in the down position to decrease belt tension.

???Release the spring tension from the auger belt idler arm on the bottom of the clutch/idler assembly.

???Remove the auger drive belt from the clutch/idler assembly and from the spiral auger housing.

???Install new belt over top of large auger drive pulley and under the two side idler pulleys. Twist the belt 1/4 turn to seat the "V" of the belt in the groove of each idler pulley. Refer to figure 30 on page 15.

Assemble the belt onto the clutch/idler assembly. Refer to figures 31 and 32 on pages 15 and 16.

SKID SHOE ADJUSTMENT

???The skid shoes are mounted on each side of the spiral auger housing. They regulate the distance the scraper plate is raised above the plowing surface. When removing snow from a gravel driveway or and uneven surface, it is advisable to keep the scraper plate as high above the surface as possible to prevent possible damage to the spiral auger, On blacktop or concrete surface, keep

the scraper plate as close to the surface as pos- sible.

???Raise the snow thrower off the ground and place a block under each end of the scraper plate. Loosen the six hex nuts securing the skid shoes to the housing. Adjust the skid shoes up or down and retighten the nuts securely. Adjust both skid shoes to the same height to keep the housing and the scraper plate level. See figure 36.

SKID

SHOE

FIGURE 36

LIFT RELEASE CABLE ADJUSTMENT

???If the lift red does not lock the snow thrower securely in the transport position, loosen the upper hex nut on the lift bracket a few turns and tighten the lower hex nut. Refer to figure 24 on page 13.

???if the lift rod fails to unlock completely to lower the snow thrower, loosen the lower hex nut on the lift bracket a few turns and tighten the upper hex nut. Refer to figure 24 on page 13.

CLUTCH DISENGAGEMENT ADJUSTMENT

(Only tractors with clutch engagement rods.)

If the spiral auger on the snow thrower does not stop when the attachment clutch lever on the tractor is disengaged, then adjustment is necessary. Proceed as follows. Refer back to figure 13 on page 9.

???Place the attachment clutch lever in the disen- gaged position.

???Remove the hairpin cotter from the engagement rod trunnion and lift the trunnion out of the hole in the idler arm.

???Screw the trunnion a few turns towards the front end of the rod.

???Replace the trunnion into the hole in the idler arm and secure it with the hairpin cotter.

Check the operation of the snow thrower. If the spiral augers still do not stop, repeat the above steps unti_ the augers stop when the attachment clutch lever is placed in the disengaged position.

SPIRAL AUGERS

???The spiral augers are secured to the auger shaft with two shear bolts and hex lock nuts. If you hit a foreign object or if ice jams the augers, the snow thrower is designed so that the bolts will shear.

???ff the augers will not turn, check to see if the shear bolts have sheared. See figure 37. Two replace- ment shear bolts and hex lock nuts have been provided with the snow thrower. For future use

order part number 710-0890A shear bolt and number 43064 hex rock nut.

GEAR HOUSING

2O

STORAGE RECOMMENDATIONS

???Lower the snow thrower to the ground.

???Remove the snow thrower from the tractor.

???Clean the snow thrower thoroughly. Wash off any salt deposit which may have dried on the thrower and housing.

???Any bare metal that has become exposed should be painted or coated with a light oil to prevent rust.

???Store in a dry place.

REMOVING THE SPIRAL AUGER HOUSING

???Lower the snow thrower to the ground.

???Remove the attachment pin. See figure 29 on page 15.

???Lock the snow thrower's lift handle in the down position to decrease belt tension.

???Release the spring tension from the auger belt idler arm on the bottom of the clutch/idler assembly,

???Remove the auger drive belt from the clutch/idler assembly. See figure 31 on page 15.

???Pull the spiral auger housing assembly off of the tractor.

ADDITIONAL PARTS TO REMOVE AT END

OF SEASON

???Remove the clutch/idler assembly. (The two hanger brackets and the two shoulder bolts may be left attached to the tractor frame.)

???Remove the drive belt from the engine pulley.

???Remove the engine pulley keeper and replace it with the tractor's original engine pulley keeper (rod or cable operated attachment clutches only).

???Remove the engagement rod from the tractor's clutch arm (rod operated attachment clutches only). See figure 11 on page 9.

???If a rear mounted attachment is to be used, remove the rear weight tray by removing the bolt from the

tractor hitch and loosening the two bolts fastening the tray's side braces to the tractor. Be sure to retighten the two bolts in the side of the tractor. See figure 33 on page 16.

eIf a front mounted attachment is to be used,

remove the side plates from the tractor. Be sure to assemble bolts back into the empty holes in the tractor frame. See figures 1 and 2 on page 6.

21

REPAIR PARTS FOR MODEL 486.24839 40" SNOW THROWER

17

16

33

!

.87

65

43

82

49

65 25

84

64_

60

45

68

22

REPAIR PARTS FOR MODEL 486.24839 40" SNOW THROWER

REF. PART NO. NO.

1 05931

263562

3618-0161A

463579

563768

624278

7703-2734

8703-2735A

9703-2736 !0 705-5226 11 705-5269 12 705-5270

1343182

1444950

15 44917

1644326

1743080

1846703

19710-0890A

20 43088

21 43064

22 43013

23 43083

24 715-0114

25 750-0437

26 731-1379A

27 43086

28 736-0188

29 736-0231

3043081

3147615

32741-0309

33741-0475

34741-0493A

3524279

3624294

37784-5618

3824393

3924281

4O 63904

4124286

4263762

4341576

4447600

45756-0405

4643015

47711-0242

4846981

4943082

5046982

51738-0680

52750-0456

53750-0660

5443003

23

REPAIR PARTS FOR MODEL 486.24839 40" SNOW THROWER

56

69

6O

81 62

58

52

261_

t \

f

15

14

6

22

63

\\

57

61 60

61 60

73

\

ao \ \

36 35

75

76

A

24

REPAIR PARTS FOR MODEL 486.24839 40" SNOW THROWER

25

NOTES

I

'26

I

10 ??

0

CAUTION: DO NOT OPERATE YOUR TRACTOR AND SNOW

&THROWER ON A SLOPE IN EXCESS OF 10 DEGREES. BE SURE OF

YOUR TRACTOR'S TOWING AND BRAKING CAPABILITIES BEFORE

OPERATING ON A SLOPE. AVOID ANY SUDDEN TURNS OR MA-

NEUVERS WHILE ON A SLOPE.

For in-home major brand repair service:

Call 24 hours a day, 7 days a week

1-800-4-MY-HOME" 0-800-469-4663)

Para pedir servicio de reparaci6n a domicilio - 1-800-676-5811

In Canada for all your service and parts needs call

Au Canada pour tout le service ou les pi_ces

- 1-600-665-4455

For the repair or replacement parts you need:

Call 7 am - 7 pm, 7 days a week

1-800-366-PART (1-800-366-7278)

Para ordenar piezas con entrega a domicilio - 1-800-659-7084

For the location of a Sears Parts and Repair Center in your area:

Call 24 hours a day, 7 days a week

1-800-488-1222

For information on purchasing a Sears Maintenance Agreement or to inquire about an existing Agreement:

Call 9 am - 5 pm, Monday - Saturday

1-800-827-6655

I

TheServiceSideof Sears"