Operator???s Manual
Single Stage
Snow Thrower
Model 521E
IMPORTANT: Read safety rules and instructions carefully
Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest- covered,
CUB CADET CORP. P.O. BOX 368023 CLEVELAND, OHIO
FINDING MODEL NUMBER
This Operator???s Manual is an important part of your new snow thrower. It will help you to assemble, prepare and maintain the unit for best performance. Please read and understand what it says.
Before you start assembling your new snow thrower, please locate the model plate on the equipment and copy the information from it in the space provided below. The information on the model plate is very important if you need help from our Customer Support Department or an authorized dealer.
???You can locate the model number by standing behind the unit in the operating position and looking down at the dash panel . A sample model plate is explained below. For future reference, please copy the model number and the serial number of the equipment in the space below.
CALLING CUSTOMER SUPPORT
If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of this unit, please call the Cub Cadet Customer Dealer Referral Line at
For more details about your machine, visit our website at www.cubcadet.com
2
SECTION 1: IMPORTANT SAFE OPERATION PRACTICES
WARNING: This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury. When you see this
WARNING: Engine Exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to State of California to cause cancer and birth defects or other reproductive harm.
DANGER: This machine was built to be operated according to the rules for safe operation in this manual. As with any type of power equipment, carelessness or error on the part of the operator can result in serious injury. This machine is capable of amputating hands and feet and throwing objects. Failure to observe the following safety instructions could result in serious injury or death.
Training
1.Read, understand, and follow all instructions on the machine and in the manual(s) before attempting to assemble and operate. Keep this manual in a safe place for future and regular reference and for ordering replacement parts.
2.Be familiar with proper operation of all controls. Know how to stop the machine and disengage them quickly.
3.Never allow children under 14 years old to operate this machine. Children 14 years old and over should read and understand the operation instructions and safety rules in this manual and should be trained and supervised by a parent.
4.Never allow adults to operate this machine without proper instruction.
5.Thrown objects can cause serious personal injury. Plan your snow throwing pattern to avoid discharge of material toward roads, bystanders and the like.
6.Keep bystanders, helpers, pets and children at least 75 feet from the machine while it is in operation. Stop machine if anyone enters the area.
7.Exercise caution to avoid slipping or falling, especially when operating in reverse.
Preparation
1.Thoroughly inspect the area where the equipment is to be used. Remove all door mats, newspapers, sleds, boards, wires and other foreign objects which could be tripped over or thrown by the auger/impeller.
2.Always wear safety glasses or eye shields during operation and while performing an adjustment or repair to protect your eyes. Thrown objects which ricochet can cause serious injury to the eyes.
3.Do not operate without wearing adequate winter outer garments. Do not wear jewelry, long scarves or other loose clothing which could become entangled in moving parts. Wear footwear which will improve footing on slippery surfaces.
4.Use a grounded three wire extension cord and receptacle for all units with electric start engines.
5.Adjust collector housing height to clear gravel or crushed rock surfaces.
6.Disengage all clutch levers before starting the engine.
7.Never attempt to make any adjustments while engine is running, except where specifically recommended in the operator???s manual.
8.Let engine and machine adjust to outdoor temperature before starting to clear snow.
9.To avoid personal injury or property damage use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Serious personal injury can occur when gasoline is spilled on yourself or your clothes which can ignite. Wash your skin and change clothes immediately.
a.Use only an approved gasoline container.
b.Extinguish all cigarettes, cigars, pipes and other sources of ignition.
c.Never fuel machine indoors.
d.Never remove gas cap or add fuel while the engine is hot or running.
e.Allow engine to cool at least two minutes before refueling.
f.Never over fill fuel tank. Fill tank to no more than ?? inch below bottom of filler neck to provide space for fuel expansion.
g.Replace gasoline cap and tighten securely.
h.If gasoline is spilled, wipe it off the engine and equipment. Move machine to another area. Wait 5 minutes before starting the engine.
i.Never store the machine or fuel container inside where there is an open flame, spark or pilot light (e.g. furnace, water heater, space heater, clothes dryer etc.).
j.Allow machine to cool at least 5 minutes before storing.
Operation
1.Do not put hands or feet near rotating parts, in the auger/ impeller housing or discharge chute. Contact with the rotating parts can amputate hands and feet.
2.The auger/impeller clutch lever is a safety device. Never bypass its operation. Doing so, makes the machine unsafe and may cause personal injury.
3.The clutch levers must operate easily in both directions and automatically return to the disengaged position when released.
4.Never operate with a missing or damaged discharge chute. Keep all safety devices in place and working.
5.Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon monoxide, an odorless and deadly gas.
3
6.Do not operate machine while under the influence of alcohol or drugs.
7.Muffler and engine become hot and can cause a burn. Do not touch.
8.Exercise extreme caution when operating on or crossing gravel surfaces. Stay alert for hidden hazards or traffic.
9.Exercise caution when changing direction and while operating on slopes.
10.Plan your snow throwing pattern to avoid discharge towards windows, walls, cars etc. To avoid property damage or personal injury caused by a ricochet.
11.Never direct discharge at children, bystanders and pets or allow anyone in front of the machine.
12.Do not overload machine capacity by attempting to clear snow at too fast of a rate.
13.Never operate this machine without good visibility or light. Always be sure of your footing and keep a firm hold on the handles. Walk, never run.
14.Disengage power to the auger/impeller when transporting or not in use.
15.Never operate machine at high transport speeds on slippery surfaces. Look down and behind and use care when in reverse.
16.If the machine should start to vibrate abnormally, stop the engine, disconnect the spark plug and ground it against the engine. Inspect thoroughly for damage. Repair any damage before starting and operating.
17.Disengage all clutch levers and stop engine before you leave the operating position (behind the handles). Wait until the auger/impeller comes to a complete stop before unclogging the discharge chute, making any adjustments, or inspections.
18.Never put your hand in the discharge or collector openings. Always use a clearing tool to unclog the discharge opening.
19.Use only attachments and accessories approved by the manufacturer (e.g. wheel weights, tire chains, cabs etc.).
20.If situations occur which are not covered in this manual, use care and good judgment. Contact your dealer or telephone
Maintenance & Storage
1.Never tamper with safety devices. Check their proper operation regularly.
2.Disengage all clutch levers and stop engine. Wait until the auger/impeller come to a complete stop. Disconnect the spark plug wire and ground against the engine to prevent unintended starting before cleaning, repairing, or inspecting.
3.Check bolts, and screws for proper tightness at frequent intervals to keep the machine in safe working condition. Also, visually inspect machine for any damage.
4.Do not change the engine governor setting or
5.Snow thrower shave plates and skid shoes are subject to wear and damage. For your safety protection, frequently check all components and replace with original equipment manufacturer???s (O.E.M.) parts only. ???Use of parts which do not meet the original equipment specifications may lead to improper performance and compromise safety!???
6.Check clutch controls periodically to verify they engage and disengage properly and adjust, if necessary. Refer to the adjustment section in this operator???s manual for instructions.
7.Maintain or replace safety and instruction labels, as necessary.
8.Observe proper disposal laws and regulations for gas, oil, etc. to protect the environment.
9.Prior to storing, run machine a few minutes to clear snow from machine and prevent freeze up of auger/impeller.
10.Never store the machine or fuel container inside where there is an open flame, spark or pilot light such as a water heater, furnace ,clothes dryer etc.
11.Always refer to the operator???s manual for proper instructions on
Your Responsibility:
???Restrict the use of this power machine to persons who read, understand and follow the warnings and instructions in this manual and on the machine.
4
SECTION 2: ASSEMBLING YOUR SNOW THROWER
Unpacking From Carton
???Cut along corners of the carton and lay it down flat. See Figure 1. Remove packing material.
???Remove any loose parts included with unit (i.e., operator???s manual, etc.).
???Roll unit out of carton. Check carton thoroughly for any remaining loose part.
Remove loose parts
Roll unit out
Figure 1
Hardware Pack
1. Ignition Keys* (2)
*One key may be in the switch on snow thrower.
(Items 2 to 5 are illustrated in Figure 2.)
2.Eyebolt
3.Saddle Washer 5/16" I.D.
4.Hex Nuts
5.Cotter Pin
Before Assembly
WARNING: Disconnect the spark plug wire and ground it against the engine to prevent unintended starting.
Raising Upper Handle
???Loosen the hand knob on each side of the handle. Remove packing material, if any.
Raise
handle to here
Hand Knob
Figure 3
???Raise the upper handle in the direction shown in Figure 3 till it clicks into the operating position. Make sure not to pinch or crimp the cable.
???Tighten the hand knobs.
Figure 2: Hardware Pack
Items Required For Assembly
1.Pair of pliers (not necessary, but helpful)
2.Two cycle engine oil (included)
3.Fresh gasoline
NOTE: All references to left or right side of the snow thrower is from the operating position only.
Attaching Control Cable
The control cable may already be attached to the control handle. If not attached, complete the following steps to attach it to the snow thrower housing.
???Route the control cable over the lower handle. Insert the end of the cable into the hole in the control housing as shown in Figure 4. Push the plastic fitting until it locks into the control housing.
Figure 4
5
???Lift the control handle up, and hook the ???Z??? end of the control cable into the bottom hole in the control handle, from the outside to the inside . If necessary, pull up on the end of the cable with a pair of pliers to obtain slack in order to hook it into the control handle. Hold the ???Z??? fitting with the pliers, not the cable, to avoid damaging the cable.
NOTE: The upper hole in the control handle provides for adjustment in belt tension. Refer to page 9 of this manual for instructions.
Installing Chute Crank
???Thread one 5/16??? hex nut half way onto the eyebolt. See Figure 5. All necessary hardware is included in the hardware pack shipped with your unit. See Figure 2 for more details.
???Slide the eyebolt onto the chute crank. Insert eyebolt into the hole in the lower handle.
Chute Crank
Eye Bolt
Hex
Nuts
Saddle
Washer
Figure 5
???Insert the chute crank into the coupler at the top right side of the snow thrower. See Figure 6.
???Rotate the crank to align holes, and insert the cotter pin. Bend ends of cotter pin in opposite directions to secure. See Figure 6.
Cotter Pin
Chute Crank
Coupler
Figure 6
???Secure eyebolt with 5/16??? saddle washer and hex nut. The cupped side of washer goes against the handle. Adjust lower hex nut until the eyebolt is positioned so that the chute crank turns freely (does not bind).
???Move upper hex nut down against the lower handle. Tighten lower hex nut securely.
Assembling Discharge Chute
The snow thrower has been shipped with the upper chute pivoted all the way down. Assemble as follows:
???Turn the chute crank until the chute faces straight to the front. See Figure 7 .
Upper
Chute
Figure 7
???Remove the hand knob, flat washer and carriage bolt from the upper chute. See Figure 7.
???Pivot the upper chute up so that there is no gap between the upper and the lower chute. See Figure 8. Secure with hardware just removed.
No
Gap
Pivot the upper
chute
Figure 8
6
SECTION 3: KNOW YOUR SNOW THROWER
Be familiar with all the controls and their proper operation. Know how to stop the machine and disengage them quickly.
Auger Control
HandleUpper
Handle
Chute Crank
Discharge
Chute
Shave
Plate
Electric
Starter
Auger
Electric Cord
Figure 9
???Compare Figure 9 with the controls on your snow thrower before starting the machine or trying to operate it.
Choke Lever
Place choke lever in ???ON??? position to start a cold engine.
Primer Button
Used to inject fuel directly into the carburetor to insure fast starts in cold weather. Follow engine manual to prime engine.
Ignition Key
Used to start engine. Put key in ???ON??? position to start.
Starter Handle
Used to manually start the engine.
Electric Starter
Used to start engine with a 120V power source.
Plug for Electric Start
Requires use of a
and a 120V power source.
Spark Plug Cover
Spark plug located under the cover.
Auger Control Handle
Located on the upper handle, the auger control handle is used to engage and disengage the augers. The snow thrower is designed to be propelled by the rotation of the augers. Pull the control handle back against the upper handle to engage the augers; release to disengage.
Chute Crank
Located on right side of dash panel, the chute crank determines the direction that snow will be discharged. Turn clockwise to discharge snow to the left; turn counterclockwise to discharge to the right.
Discharge Chute
The angle of the discharge chute controls the distance that the snow is thrown. Tilt the discharge chute up for greater distance; tilt down for less distance. Loosen the hand knob on the side of the discharge chute to adjust. Tilt the chute to the desired position, and tighten the knob.
Stopping Engine
???Turn ignition key to OFF position and remove it from the snow thrower.
7
SECTION 4: OPERATING YOUR SNOW THROWER
Before Starting
WARNING: Read, understand, and follow all instructions and warnings on the machine and in this manual before operating.
???The spark plug wire was disconnected for safety purposes during assembly. Attach spark plug wire to spark plug before starting.
Fuel & Oil Mixture
WARNING: Use extreme care when handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Never fuel machine indoors or while the engine is hot or running. Extinguish cigarettes, cigars, pipes and other sources of ignition.
Your snow thrower uses a two cycle engine that requires a mixture of gasoline and two cycle engine oil. Refer to the engine operator???s manual for proper oil and fuel recommendations.
???A plastic cup was provided inside the fuel fill opening on the fuel tank. Remove and discard this cup before filling up the tank. Use the seperate fuel tank cap to close after
Starting Engine
Recoil Starter
???To start the engine of your snow thrower, follow the engine manual.
Electric Starter
WARNING: The electric starter is equipped with a grounded
???Determine that your house wiring is a
???If your house wiring system is not a
???If your home electrical system is grounded, but a
???If you have a grounded
Operating Snow Thrower
Chute
Hand
Knob
Figure 10
???Adjust the upper discharge chute up or down as shown in Figure 10. Then use the chute crank to position the discharge chute in order to discharge snow with the wind.
???After making sure no bystanders or obstacles are in front of the unit, engage the auger control handle. See Figure 11. As the snow thrower starts to move, maintain a firm hold on the handle, and guide the snow thrower along the path to be cleared.
???Release the auger control handle to stop the snow throwing action and the forward motion.
Press auger control handle to engage auger
Turn handle to change discharge direction
Figure 11
Stopping Engine
???Run the engine for a few minutes before stopping to help dry any moisture on the engine.
???To stop engine: Turn ignition key to OFF position and remove it from the snow thrower.
IMPORTANT: Keep the ignition key in a safe place. Engine will not start without it.
8
???Wipe all snow and moisture from the unit. Move the choke lever back and forth several times and leave it in the ON position.
Operating Tips
???Discharge snow downwind whenever possible. Slightly overlap each previously cleared path.
???Lifting up on the handle will allow the rubber on the augers to propel the snow thrower forward. Pushing downward on the handle will raise the augers off the ground and stop the forward motion.
NOTE: Excessive upward pressure on the handle will result in premature wear on the rubber auger blades which would not be covered by warranty.
???Run the engine for a few minutes before stopping to help dry any moisture on the engine.
???Clean the snow thrower thoroughly after each use.
WARNING: Muffler, engine and surrounding areas become hot and can cause a burn. Do not touch.
SECTION 5: MAKING ADJUSTMENTS
WARNING: NEVER attempt to make any adjustments while the engine is running, except where specified in the operator???s manual.
Shave Plate
??? To check the adjustment of the shave plate, place the unit on a level surface. See Figure 12. The wheels, shave plate and augers should all contact level surface. Note that if the shave plate is adjusted too high, snow may blow under the housing. If the shave plate wears out excessively, or the unit will not
Nuts & Bolts
NOTE: On new units or units with a new shave plate installed, the augers may be slightly off the ground.
Figure 13
Figure 12
???To adjust, tip the snow thrower back so that it rests on the handle. Loosen the lock nuts and bolts which secure the shave plate to the housing. See Figure 13. Move the shave plate to desired position and retighten the nuts and bolts. Make certain all nuts and bolts are tightened securely
Belt Tension
Periodic adjustment of the belt tension may be required due to normal stretch and wear on the belt. If augers hesitate while turning although engine maintains same speed, adjust tension following instructions below.
???The upper hole in the control handle provides adjustment for belt tension. To adjust, disconnect the ???Z??? end of control cable from the bottom hole in the control handle. See Figure 14 . Hook the cable into the upper hole in control handle as shown.
Upper
Hole
Clutch
Cable
Control
Housing
Figure 14
9
If additional adjustment is required, follow steps below.
???Remove the belt cover by removing five hex screws that hold it in place. For location of the belt cover, see Figure 16.
???There are three adjustment holes provided in the idler bracket assembly. For location of these holes, see Figure 15.
Idler
Bracket
Low Position
Spring on
End of Clutch
Cable
Auger
Pulley
Figure 15
???To adjust, move the extension spring on the end of the clutch cable to the next higher adjustment position on the idler bracket assembly. Reassemble belt cover.
Carburetor
WARNING: If any adjustments need to be made to the engine while the engine is running (e.g. carburetor), keep clear of all moving parts. Be careful of muffler, engine and other surrounding heated surfaces.
???Refer to the separate engine manual, packed with your unit, for carburetor adjustment information.
SECTION 6: MAINTAINING YOUR SNOW THROWER
General Recommendations
???Always observe safety rules when performing any maintenance.
???The warranty on this snow thrower does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain the snow thrower as instructed in this manual.
???Changing of engine governed speed will void engine warranty.
???Some adjustments will have to be made periodically to maintain your unit properly. All adjustments in the Making Adjustments section of this manual should be checked at least once each season.
???Periodically check all fasteners and make sure these are tight
???Follow the maintenance schedule given below to get quality performance from your snow thrower for a long time.
Customer Responsibilities
MAINTENANCE SCHEDULE
SERVICE DATES
10
WARNING: Before servicing, repairing, or inspecting, disengage all clutch levers and stop engine. Wait until all moving parts have come to a complete stop. Disconnect spark plug wire and ground it against the engine to prevent unintended starting.
???Pull up on the idler pulley and slip the belt off the engine pulley.
???Push down on the idler pulley and slip the belt off the auger pulley.
???Reassemble new belt. See Figure 17.
???Reinstall the belt cover.
Replacing Shave Plate
The shave plate is subject to wear. It should be checked periodically. There are two wearing edges and the shave plate can be reversed. See Figure 13 .
???Remove the four carriage bolts and hex lock nuts which attach it to the snow thrower housing.
???Install new shave plate, making sure the heads of the carriage bolts are on the inside of the housing.
???Adjust the shave plate according to procedure in the ???Making Adjustments??? section of this manual.
???Tighten securely.
Replacing Belt
???Remove the belt cover by removing five hex screws. See Figure 16.
Idler Pulley
Engine
Pulley
Belt
Figure 17
Engine
???Refer to the separate engine operator???s manual packed with your snow thrower for all engine maintenance procedures.
???Check engine and snow thrower frequently for loose hardware, and tighten as needed.
Figure 16
Lubrication
???Lubricate pivot points on the control handle and the extension spring at the end of the clutch cable with a light oil once every season and before storage of the snow thrower at the end of the season.
SECTION 7:
WARNING: Never store engine with fuel in tank indoors or in enclosed, poorly ventilated areas where fuel fumes may reach an open flame, spark or pilot light as on a furnace, water heater, clothes dryer, or other gas appliance.
???Clean snow thrower thoroughly.
???Lubricate as instructed above with a light oil.
???Follow ???Storage??? instructions in the Engine Manual.
???Store in a clean, dry area. Block the snow thrower up so it is not resting on the rubber auger blades.
NOTE: When storing any type of power equipment in an poorly ventilated or metal storage shed, care should be taken to rustproof the equipment, especially springs, cables and all moving parts.
11
SECTION 8: TROUBLESHOOTING GUIDE
NOTE: For repairs beyond the minor adjustments listed above, call the Customer Dealer Line at
12
SECTION 9: PARTS LIST FOR MODEL 521E
10
3
7
8
6
1
7
4
NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part, numbered
Cub Yellow: 0716
Cub Beige: 0499
Cub Blue: 0685
Powder Black: 0637
13
Model 521E
19
30
6
1
40
39
4 2
18
15 17
9 7
22
42 45
13
44
3
20
33
21
38
36
8
41
14
Model 521E
NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part, numbered
Cub Yellow: 0716
Cub Beige: 0499
Cub Blue: 0685
Powder Black: 0637
15
Model 521E
11
27
9
23 8
29
4
22
3
5
5
20
17
10
26
7
7
15 14
19
24
18 7
16
16
Model 521E
1.
2.
3.
4.
6.
7.
11.
13.
14.
15.
16.
20.
21.
24.
25.
27.
29.7510009636 Mitten Grip Handle
NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part, numbered
Cub Yellow: 0716
Cub Beige: 0499
Cub Blue: 0685
Powder Black: 0637
17
Model 521E
18 15**
10 4
17
1
8
6 13
5
11 7
19
21
NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part, numbered 700- xxxx, is painted Cub Yellow, the part number to order would be
Cub Yellow: 0716
Cub Beige: 0499
Cub Blue: 0685
Powder Black: 0637
20
12
3
18
Model 521E
19
MANUFACTURER???S LIMITED WARRANTY FOR:
Proper maintenance of your Cub Cadet equipment is the owner???s responsibility. Follow the instructions in your operator???s manual for correct lubricants and maintenance schedule. Your Cub Cadet dealer carries a complete line of quality lubricants and filters for your equipment???s engine, transmission, chassis and attachments.
Riding mowers, lawn tractors, garden tractors, Cub Cadet attachments and home maintenance products
This limited warranty for residential users, covers any defect in materials or workmanship in your Cub Cadet equipment for two years from the date of purchase for the first user purchaser. We will replace or repair any part or parts without charge through your authorized Cub Cadet dealer.
Batteries have a
Cub Cadet equipment used commercially is warranted for one year only.
(Commercial use is defined as either having hired operators or used for income producing purposes.)
Items not covered
The warranty does not cover routine maintenance items such as lubricants, filters (oil, fuel, air and hydraulic), cleaning,
There is no other express warranty.
How to obtain service
Contact your authorized Cub Cadet servicing dealer who sold you your Cub Cadet equipment. If this dealer is not available, see the Consumer Yellow Pages under ???lawn mowers??? for the name of a dealer near you.
If you need further assistance in finding an authorized Cub Cadet servicing dealer, contact:
Cub Cadet Corporation
Post Office Box 368023
Cleveland, Ohio 44136
How does state law apply?
This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state.