CRAFTSMAN CMGB21179 Snow Blower

Product Information

The Snow Blower is a versatile machine designed to efficiently remove snow from driveways, walkways, and other outdoor surfaces. It is available in multiple models, including CMXGBAM1054538, CMXGBAM1054539, CMXGBAM1054540, and CMGB21179. Please refer to the specific model number for accurate instructions and specifications.

This product is manufactured by Craftsman and can be contacted at 1-888-331-4569. For more information and support, you can visit their website at www.craftsman.com.

Product Usage Instructions

1. Before using the snow blower, carefully read the instruction manual and familiarize yourself with all safety rules and operating instructions.
2. Assembly:
   • Follow the assembly instructions provided in the manual to properly set up the snow blower.
3. Operation:
   • Ensure safe operation practices by following the guidelines mentioned in the manual.
   • Refer to Page 9 of the manual for detailed instructions on operating the snow blower.
4. Service and Maintenance:
   • Regularly perform service and maintenance tasks as described in Page 12 of the manual to keep the snow blower in optimal condition.
5. Off-Season Storage:
   • Follow the instructions on Page 16 of the manual to properly store the snow blower during the off-season.

Product Specifications

• Engine Series: Refer to separate Engine Manual
• Engine Oil Type: Refer to separate Engine Manual
• Engine Oil Capacity: Refer to separate Engine Manual
• Fuel: Unleaded Gasoline

Make sure to record the model number, serial number, and date of purchase for future reference.

Safety Instructions
It is essential to follow all safety instructions provided in the manual to ensure personal safety and prevent property damage.

Some important safety instructions include:

• Read and understand all instructions before operating the machine.
• Heed warning symbols and follow the instructions accordingly.
• Restrict the use of the snow blower to individuals who have read and understood the warnings and instructions.
• Handle gasoline with extreme care due to its flammability and explosive nature.
• Avoid hand contact with the rotating impeller inside the discharge chute when clearing a clogged chute.

For more detailed safety instructions, please refer to the manual.

CAUTION
Before using this equipment, read the manual and follow all safety rules and operating instructions.

NOTE:
This Operator’s Manual covers several models. Features may vary by model. Not all features in this manual are applicable to all models and the model depicted may differ from yours. The terms “snow thrower” and “snow blower” may be used interchangeably for this product.

CRAFTSMAN® is a registered trademark of Stanley Black & Decker, Inc., used under license.

© 2018 CRAFTSMAN U.S. & Canada Only
CRAFTSMAN.com.

SAFETY INSTRUCTIONS

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 symbol, HEED ITS WARNING!

WARNING
CALIFORNIA PROPOSITION 65

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 safe operation practices 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 fingers, hands, toes and feet and throwing debris. Failure to observe the following safety instructions could result in serious injury or death.

WARNING
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.

SAVE THESE INSTRUCTIONS!

TRAINING

• Read, understand, and follow all instructions on the machine and in the manual(s) before attempting to assemble and operate. Failure to do so can result in serious injury to the operator and/or bystanders. Keep this manual in a safe place for future and regular reference and for ordering replacement parts.
• Be familiar with all controls and their proper operation. Know how to stop the machine and disengage it quickly.
• Never allow children under 14 years of age to operate this machine. Children 14 and over should read and understand the instructions and safe operation practices in this manual and on the machine and be trained and supervised by an adult.
• Never allow adults to operate this machine without proper instruction.
• Thrown objects can cause serious personal injury. Plan your snow-throwing pattern to avoid the discharge of material toward roads, bystanders, and the like.
• Keep bystanders, pets, and children at least 75 feet from the machine while it is in operation. Stop the machine if anyone enters the area.
• Exercise caution to avoid slipping or falling, especially when operating in reverse.

PREPARATION

• Thoroughly inspect the area where the equipment is to be used. Remove all doormats, newspapers, sleds, boards, wires, and other foreign objects, that could be tripped over or thrown by the auger/impeller.
• 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.
• 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 that will improve footing on slippery surfaces.
• Use a grounded three-wire extension cord and receptacle for all machines with electric start engines.
• Disengage all control levers before starting the engine.
• Never attempt to make any adjustments while the engine is running, except where specifically recommended in the operator’s manual.
• Let the engine and machine adjust to outdoor temperature before starting to clear snow.

Safe Handling of Gasoline:
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.

• Use only an approved gasoline container.
• Extinguish all cigarettes, cigars, pipes, and other sources of ignition.
• Never fuel the machine indoors.
• Never remove the gas cap or add fuel while the engine is hot or running.
• Allow the engine to cool for at least two minutes before refueling.
• Never overfill the fuel tank. Fill the tank to no more than ½ inch below the bottom of the filler neck to provide space for fuel expansion.
• Replace the gasoline cap and tighten it securely.
• If gasoline is spilled, wipe it off the engine and equipment. Move the machine to another area. Wait 5 minutes before starting the engine.
• 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.).
• Allow the machine to cool for at least 5 minutes before storing.
• Never fill containers inside a vehicle or on a truck or trailer bed with a plastic liner. Always place containers on the ground away from your vehicle before filling.
• If possible, remove gas-powered equipment from the truck or trailer and refuel it on the ground. If this is not possible, then refuel such equipment on a trailer with a portable container, rather than from a gasoline dispenser nozzle.
• Keep the nozzle in contact with the rim of the fuel tank or container opening at all times until fueling is complete. Do not use a nozzle lock-open device.

OPERATION

• Do not put hands or feet near rotating parts, in the auger/impeller housing or chute assembly. Contact with the rotating parts can amputate hands and feet.

• The auger/impeller control lever is a safety device. Never bypass its operation. Doing so makes the machine unsafe and may cause personal injury.

• The control levers must operate easily in both directions and automatically return to the disengaged position when released.

• Never operate with a missing or damaged chute assembly. Keep all safety devices in place and working.

• Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon monoxide, an odorless and deadly gas.

• Do not operate the machine while under the influence of alcohol or drugs.

• Muffler and engine become hot and can cause a burn. Do not touch. Keep children away.

• Exercise extreme caution when operating on or crossing gravel surfaces. Stay alert for hidden hazards or traffic.

• Exercise caution when changing direction and while operating on slopes.

• Plan your snow-throwing pattern to avoid discharge towards windows, walls, cars, etc. Thus, avoiding possible property damage or personal injury caused by a ricochet.

• Prevent possible property damage or personal injury from object ricochets by planning your snow-throwing pattern to avoid discharge towards windows, walls, cars, etc.

• Do not overload machine capacity by attempting to clear snow at too fast of a rate.

• 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.

• Disengage power to the auger/impeller when transporting or not in use.

• Never operate the machine at high transport speeds on slippery surfaces. Look down and behind and use care when backing up.

• If the machine should start to vibrate abnormally, stop the engine, disconnect the spark plug wire, and ground it against the engine. Inspect thoroughly for damage. Repair any damage before starting and operating.

• Disengage all control levers and stop the engine before you leave the operating position (behind the handles). Wait until the auger/impeller comes to
  a complete stop before unclogging the chute assembly, making any adjustments, or inspections.

• Never put your hand in the discharge or collector openings. Do not unclog the chute assembly while the engine is running. Shut off the engine and remain behind the handles until all moving parts have stopped before unclogging.

• Use only attachments and accessories approved by the manufacturer (e.g. wheel weights, tire chains, cabs, etc.).

• When starting the engine, pull the cord slowly until resistance is felt, then pull rapidly. Rapid retraction of the starter cord (kickback) will pull your hand and arm toward the engine faster than you can let go. Broken bones, fractures, bruises, or sprains could result.

CLEARING A CLOGGED DISCHARGE CHUTE
Hand contact with the rotating impeller inside the discharge chute is the most common cause of injury associated with snow blowers. Never use your hand to clean out the discharge chute.

To clear the chute:

• SHUT THE ENGINE OFF!
• Wait 10 seconds to be sure the impeller blades have stopped rotating.
• Always use a clean-out tool, not your hands.

MAINTENANCE & STORAGE

• Never tamper with safety devices. Check their proper operation regularly. Refer to the maintenance and adjustment sections of this manual.
• Before cleaning, repairing, or inspecting the machine disengage all control levers and stop the engine. Wait until the auger/impeller comes to a complete stop. Disconnect the spark plug wire and ground against the engine to prevent unintended starting.
• Check bolts and screws for proper tightness at frequent intervals to keep the machine in safe working condition. Also, visually inspect the machine for any damage.
• Do not change the engine governor setting or over-speed the engine. The governor controls the maximum safe operating speed of the engine.
• Snow blower shave plates and skid shoes are subject to wear and damage. For your safety protection, frequently check all components and replace them with original equipment manufacturer’s (OEM) parts only as listed in the Parts pages of this Operator’s Manual. Use of parts which do not meet the original equipment specifications may lead to improper performance and compromise safety!
• Check control levers periodically to verify they engage and disengage properly and adjust, if necessary. Refer to the adjustment section in this operator’s manual for instructions.
• Maintain or replace safety and instruction labels, as necessary.
• Observe proper disposal laws and regulations for gas, oil, etc. to protect the environment.
• Prior to storing, run the machine for a few minutes to clear snow from the machine and prevent freeze-up of the auger/impeller.
• 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.
• Always refer to the operator’s manual for proper instructions on off-season storage.
• Check the fuel line, tank, cap, and fittings frequently for cracks or leaks. Replace if necessary.
• Do not crank the engine with the spark plug removed.
• According to the Consumer Products Safety Commission (CPSC) and the U.S. Environmental Protection Agency (EPA), this product has an Average Useful Life of seven (7) years, or 60 hours of operation. At the end of the Average Useful Life have the machine inspected annually by an authorized service dealer to ensure that all mechanical and safety systems are working properly and not worn excessively. Failure to do so can result in accidents, injuries or death.

DO NOT MODIFY ENGINE
To avoid serious injury or death, do not modify the engine in any way. Tampering with the governor setting can lead to a runaway engine and cause it to operate at unsafe speeds. Never tamper with the factory setting of the engine governor.

NOTICE REGARDING EMISSIONS
Engines that are certified to comply with California and federal EPA emission regulations for SORE (Small Off Road Equipment) are certified
to operate on regular unleaded gasoline, and may include the following emission control systems: Engine Modification (EM), Oxidizing Catalyst (OC), Secondary Air Injection (SAI) and Three Way Catalyst (TWC) if so equipped.

SPARK ARRESTOR

WARNING
This machine is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrestor meeting applicable local or state laws (if any).

If a spark arrestor is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrestor for the muffler is available through your nearest authorized Service Center, or by calling 1-888-331-4569.

SAFETY SYMBOLS

This page depicts and describes safety symbols that may appear on this product. Read, understand, and follow all instructions on the machine before attempting to assemble and operate.

WARNING:
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.

SAVE THESE INSTRUCTIONS!

ASSEMBLY

• NOTE: All references to the left or right side of the snow blower are from the operator’s position. Any exceptions will be noted.
• NOTE: This Operator’s Manual covers several models. Features may vary by model. Not all features in this manual are applicable to all models and the model depicted may differ from yours.

Unpacking the Snow Blower

1. Open the top of the carton.
2. Cut down the corners on the front of the carton and fold down the front side.
3. Pull the snow blower out of the carton. Be sure not to damage the chute, or any cables attached to the chute, which is shipped under the shroud on the backside of the carton.

Assembly

Positioning the Upper Handle

1. Remove the wing knobs and carriage bolts from the top of the lower handle. See Figure 1. It is not necessary to remove the shoulder screw and flange lock nut below the wing knob and carriage bolt.
2. Pivot the upper handle into the operating position. Be sure not to pinch any of the cables in the process. See Figure 2.
3. Tighten the previously removed hardware to secure the handle in place. See Figure 2.

Installing the Chute

1. Place the chute handle on the lower chute as shown in Figure 3. Be certain that the handle is aligned in the channel on the chute and the tabs snap into place.
2. Remove the screws in the chute base. See Figure 4.
3. Align the holes in the chute base with the holes in the lower chute and secure with the previously removed screws. See Figure 5.

Installing the Recoil Starter Handle

1. Remove the eye bolt and handle knob from the manual bag.

2. Place the eye bolt and handle knob on the upper handle as shown in Figure 6. Do not fully tighten the hardware until instructed to do so.
   NOTE: The opening of the eye bolt should face toward the back of the snow blower.

3. Slowly pull the recoil starter handle up towards the eye bolt.

4. Slip the recoil starter rope into the eye bolt from the back side of the snow blower. See Figure 6.

5. Securely tighten the eye bolt and handle knob.

Set-Up

Fuel Recommendations

CAUTION
Operating the engine with E15 or E85 fuel, an oil/gasoline mixture, dirty gasoline, or gasoline over 30 days old without a fuel stabilizing additive may result in damage to your engine’s carburetor. Subsequent damage would not be covered under the manufacturer’s warranty.

Use automotive gasoline (unleaded or low led to minimize combustion chamber deposits) with a minimum of 87 octanes. Gasoline with up to 10% ethanol (E10) or 15% MTBE (Methyl Tertiary Butyl Ether) can be used. Never use an oil/gasoline mixture or dirty gasoline. Avoid getting dirt, dust, or water in the fuel tank. DO NOT use E15 or E85 gasoline.

• Refuel in a well-ventilated area with the engine stopped. Do not smoke or allow flames or sparks in the area where the engine is refueled or where gasoline is stored.
• Do not overfill the fuel tank. After refueling, make sure the tank cap is closed properly and securely.
• Be careful not to spill fuel when refueling. Spilled fuel or fuel vapor may ignite. If any fuel is spilled, make sure the area is dry before starting the engine.
• Avoid repeated or prolonged contact with skin or breathing of vapor.

Adding Fuel

WARNING
Use extreme care when handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Never fuel the machine indoors or while the engine is hot or running. Extinguish cigarettes, cigars, pipes and other sources of ignition.

WARNING
Always keep hands and feet clear of equipment moving parts. Do not use a pressurized starting fluid. Vapors are flammable.

1. Remove the gas cap, check the fuel level, and add fuel if necessary. Fill the tank until the fuel reaches 1/2” below the bottom of the filler neck to allow for fuel expansion. Be careful not to overfill.

Checking & Adding Oil

CAUTION
The engine is shipped without oil in the engine. You must fill the engine with oil before operating. Running the engine with insufficient oil can cause serious engine damage and void the product warranty.

1. Place the snow blower on a flat, level surface.

2. On some models, the oil filler cap/dipstick can be accessed on the left side of the shroud. See Figure 7. On other models, the oil filler cap/dipstick can be accessed at the rear of the snow blower. See Figure 8.

3. Remove the oil filler cap/dipstick and wipe the dipstick clean.

4. Insert the oil filler cap/dipstick into the oil filler neck, but do not screw it in.

5. Remove the oil filler cap/dipstick. If the level is low, slowly add oil until the oil level registers between the upper lever and the lower level.
   NOTE: Do not overfill. Overfilling with oil may cause smoking, hard starting, or spark plug fouling.

6. Replace and tighten oil filler cap/dipstick firmly before starting the engine.
   NOTE: DO NOT allow oil level to fall below the lower level on the dipstick. Doing so may result in equipment malfunctions or damage.
   NOTE: To change the oil on your engine, see the Maintenance section of this manual.

OPERATION

Now that you have set up your snow blower, it’s important to become acquainted with its controls and features. Refer to Figure 1.

• NOTE: This Operator’s Manual covers several models. Features may vary by model. Not all features in this manual are applicable to all models and the unit depicted may differ from yours.
• NOTE: References to LEFT, RIGHT, FRONT, and REAR indicate that position on the when facing forward in the operation position.

Choke Control

• Model: CMXGBAM1054538, CMXGBAM1054539
• Model: CMXGBAM1054540, CMGSB21179

Activating the choke control closes the choke plate on the carburetor and aids in starting the engine. The choke lever slides between the RUN and CHOKE positions.

Primer

Pressing the primer, making sure to cover the vent hole when pushing, forces fuel directly into the engine’s carburetor to aid in cold-weather starting.

Recoil Starter Handle
The recoil starter handle is used to start the engine.

Gas Cap
Remove the gas cap to add fuel.

Key
The key is a safety device. It must be fully inserted in order for the engine to start. Remove the key when the snow blower is not in use.

NOTE: Do not turn the key in an attempt to start the engine. Doing so may cause it to break.

Auger
When engaged, the auger rotation draws snow into the auger housing and throws it out the discharge chute. Rubber paddles on the auger also aid in propelling the snow blower as they come in contact with the pavement.

Auger Control
Located on the upper handle, the auger control handle is used to engage and disengage drive to the auger. Squeeze the control handle against the upper handle to engage the auger; release it to disengage.

Chute Assembly
Rotate the discharge chute to the left or right using the control handle. The pitch of the discharge chute controls the angle at which the snow is thrown. Loosen the wing knob on the side of the discharge chute before pivoting the discharge chute upward or downward. Retighten the knob once the desired position has been achieved.

Shave Plate
The shave plate maintains contact with the pavement as the snow blower is propelled, allowing snow close to the pavement’s surface to be discharged.

Before Starting the Engine

WARNING
Read, understand and follow all the instructions and warnings on the machine and in this manual before operating.

Starting The Engine

Recoil Starter

WARNING
Always keep hands and feet clear of moving parts. Do not use a pressurized starting fluid. Vapors are flammable.

WARNING
To avoid carbon monoxide poisoning, make sure the engine is outdoors in a well-ventilated area.

1. Make certain the auger control is in the disengaged (released) position.

2. Insert ignition key into slot. Make sure it snaps into place. Do not attempt to turn the key. See Figure 2 for models CMXGBAM1054538, CMXGBAM1054539 and see Figure 3 for models CMXGBAM1054540, CMGSB21179.
   NOTE: The engine cannot start unless the key is fully inserted into the ignition switch.

3. Push the choke lever to the CHOKE position.

4. If the engine is warm, place the choke in the RUN position instead of CHOKE.

5. Push the primer five to seven (5-7) times for models CMXGBAM1054538 and CMXGBAM1054539 and three (3) times for models CMXGBAM1054540 and CMGSB21179, making sure to cover the vent hole when pushing.

6. If the engine is warm, push the primer only once.

7. Grasp the recoil starter handle and slowly pull the rope out. At the point where it becomes slightly harder to pull the rope, slowly allow the rope to recoil.

8. Pull the starter handle with a firm, rapid stroke. Do not release the handle and allow it to snap back. Keep a firm hold on the starter handle and allow it to slowly recoil.

9. Allow the engine to warm up for several minutes, adjusting the choke toward the RUN position. Wait until the engine runs smoothly before each choke adjustment.

Electric Starter (If equipped)
Determine that your home’s wiring is a three-wire grounded system. Ask a licensed electrician if you are not certain.

If you have a grounded three-prong receptacle, proceed as follows:

CAUTION
The extension cord can be any length, but must be rated for 15 amps at 125 volts, grounded and rated for outdoor use.

1. Make certain the auger control is in the disengaged (released) position.
2. Insert ignition key into slot. Make sure it snaps into place. Do not attempt to turn the key. See Figure 3 for models CMXGBAM1054540 and CMGSB21179. NOTE: The engine cannot start unless the key is fully inserted into the ignition switch.
3. Plug the extension cord into the outlet located on the engine’s surface. Plug the other end of the extension cord into a three-prong 120-volt, grounded, AC outlet in a well-ventilated area See Figure 4.
4. Push the choke lever to the CHOKE position.
5. If the engine is warm, place the choke in the RUN position instead of CHOKE.
6. Push the primer three (3) times for models CMXGBAM1054540 and CMGSB21179, making sure to cover the vent hole when pushing.
7. If the engine is warm, push the primer button only once.
8. Push the starter button to start the engine.
9. Once the engine starts, release the starter button.
10. Allow the engine to warm up for several minutes, adjusting the choke toward the RUN position. Wait until the engine runs smoothly before each choke adjustment.
11. When disconnecting the extension cord, always unplug the end at the three-prong wall outlet before unplugging the opposite end from the snow blower.

Stopping the Engine

1. Run the engine for a few minutes without engaging the auger before stopping to help dry off any moisture on the engine.

2. To stop the engine remove the key and store it in a safe place.
   NOTE: Remove the key to quickly stop the engine in the event of an emergency.

3. Wipe all the snow and moisture away from the engine control area.

WARNING
Muffler, engine, and surrounding areas become hot and can cause a burn. Be careful and do not touch them when they are hot.

Engaging the Auger
Engage the auger by squeezing the auger control against the upper handle. Release the control to stop the auger.

Engaging the Drive
Lift up slightly on the upper handle to allow the rubber paddles on the auger to contact the pavement and propel the snow blower forward. Pushing downward on the handle will raise the auger off the ground and stop the forward motion.

NOTE:
Excessive upward pressure on the handle will result in premature wear to the rubber auger paddles.

Clearing a Clogged Discharge Chute
Hand contact with the rotating impeller inside the discharge chute is the most common cause of injury associated with snow blowers. Never use your hand to clean out the discharge chute.

To clear the chute:

1. Stop the engine. See the instructions above for how to stop the engine.
2. Wait 10 seconds to be sure the impeller blades have stopped rotating.
3. Always use a clean-out tool or stick, not your hands.

Operating the Snow Blower

• Once the auger drive is engaged, roll the snow blower into the layer of snow to be removed.
• Adjust the chute so that the snow is not thrown over other snow that is to be removed.
• Prevent possible property damage or personal injury from object ricochets by planning your snow-throwing pattern to avoid discharge towards windows, walls, cars, etc.
• Do not overload machine capacity by attempting to clear snow at too fast of a rate.
• 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 when operating the snow blower.
• Look down and behind and use care when backing up.

SERVICE AND MAINTENANCE

MAINTENANCE SCHEDULE

WARNING
Before performing any type of maintenance/service, disengage all controls and stop the 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. Always wear safety glasses during operation or while performing any adjustments or repairs.

Follow the maintenance schedule given below. This chart describes service guidelines only. Use the Service Log column to keep track of completed maintenance tasks. To locate the nearest authorized Service Center or to schedule service, call the following toll free number: 1-888-331-4569.

2. Snowblower and exhaust area.

| 1.                       Check.

2.                       Clean.

|
1st 5 hours| 1.        Engine oil.| 1.        Change.|
Every 5 hours| 1.                       Engine oil.

2.                       Exhaust area.

| 1.                       Check.

2.                       Clean.

|
25 hours| 1.        Spark plug.| 1.        Check. (See engine manual)|
Every season/50 hours| 1.        Engine oil.| 1.        Change.|
Every season/100 hours| 1.        Spark plug.| 1.        Clean, replace, re- gap. (See engine manual)|
Every season/Before storage| 1.                       Pivot points.

2.                       Control handle.

3.                       Extension spring.

| 1.                       Lubricate.

2.                       Lubricate.

3.                       Lubricate.

|

NOTE:
This Operator’s Manual covers several models. Snow blower features may vary by model. Not all features in this manual are applicable to all snow blower models and the snow blower depicted may differ from yours.

Maintenance

Engine
Refer to the Engine Operator’s Manual for all engine maintenance procedures. Checking, adding and changing oil are also found in this manual.

Lubrication
Lubricate the pivot points on the control handle and the extension spring at the end of the control cable with a light oil once every season and before the snow blower is put into storage at the end of the season.

Adjustments

Shave Plate
To check the adjustment of the shave plate, place the machine on a level surface. The wheels, shave plate and auger paddles should all contact the level surface. Note that if the shave plate is adjusted too high, snow may blow under the auger housing. If the shave plate wears out excessively, or the snow blower does not self-propel, the shave plate may be too low to the ground and needs to be adjusted.

NOTE:
On new snow blowers or machines with a new shave plate installed, the auger paddles may be slightly off the ground.

To adjust the shave plate proceed as follows:

1. Run the snow blower until the fuel tank is empty.

2. Pull the starter cord until resistance is felt. Then tip the snow blower back until it rests on the handles. To ensure that the snow blower does not tip forward, it may be necessary to secure the handle to the ground with a block or other object.

3. Loosen the four flange lock nuts and carriage screws which secure the shave plate to the housing. See Figure 1. Move the shave plate to the appropriate position and retighten the nuts and screws securely.

4. Tip the snow blower back to the operating position and pull the recoil starter handle a few times to see if it is difficult to pull.

5. If the starter is difficult to pull, remove the spark plug and pull the handle several times to ensure that any oil trapped in the engine head is removed.
   CAUTION
   Oil may come out of the spark plug hole when it is removed and the starter handle is pulled.

6. Inspect the spark plug. If it is wet, clean off any oil before re-installing.

Control Cable
As a result of both the control cable and the auger drive belt stretching due to wear, periodic adjustments may be necessary. If the auger seems to hesitate when rotating, proceed as follows:

1. The upper hole in the control handle provides for an adjustment in cable tension. To adjust, disconnect the end of control cable from the bottom hole in the control handle and reinsert it in the upper hole. Insert the cable from the outside as shown in Figure 2.
2. Test the snow blower to see if there is a noticeable difference. If after the adjustment to the control cable the auger still hesitates when rotating, see Auger Drive Belt Replacement for instructions on replacing the belt.

Chute Assembly
Refer to the Assembly section for instructions on adjusting the chute assembly.

Service

Auger Drive Belt Replacement

1. Run the snow blower until the fuel tank is empty.
2. Pull the recoil starter handle until resistance is felt. Then tip the snow blower back until it rests on the handles.
3. Slide a board up through the auger and through the chute to secure the auger in place.
4. Remove the belt cover by removing the two hex washer screws and one hex lock screw that secure it to the frame. See Figure 3.
5. Remove the flange nut that secures the auger pulley to the auger shaft. See Figure 4.
6. Remove the auger pulley and the belt.

To replace the belt follow these instructions and refer to Figure 5:

1. Route the belt around the drive pulley and under the idler pulley.
2. Route the end of the belt around the auger pulley and slide the pulley back on to the auger shaft. It may be necessary to push down on the idler pulley to get the auger pulley under the belt keeper.
3. Replace the flange nut and tighten securely.
4. Squeeze the auger control lever against the upper handle and reinstall the belt cover removed earlier.
5. Remove the board from the auger and chute.

Replacing Auger Paddles
The snow blower auger’s rubber paddles are subject to wear and should be replaced if any signs of excessive wear are present.

CAUTION
Do NOT allow the auger’s rubber paddles to wear to the point where portions of the metal auger itself can come in contact with the pavement. Doing so can result in serious damage to your snow blower.

To change the rubber paddles, proceed as follows and refer to Figure 6:

1. Run the snow blower until the fuel tank is empty.

2. Pull the recoil starter handle until resistance is felt. Then tip the snow blower back until it rests on the handles.

3. Remove the existing rubber paddles by unthreading the hex washer screws which secure them to the auger. See Figure 6.
   NOTE: The auger paddles should be replaced one at a time so that the auger paddle still attached can be used as an example for positioning and re- installing the new auger.

4. Secure the replacement rubber paddles to the auger using the hardware removed earlier.

A full auger replacement kit including rubber paddles and hex washer screws may be obtained through and authorized Service Center or by calling 1-888-331-4569. Ask for part 753-06469.

Reversing or Replacing Shave Plate
The shave plate is attached to the bottom of the auger housing and is subject to wear. It should be checked periodically. There are two wearing edges and the shave plate can be reversed.

1. Run the snow blower until the fuel tank is empty.
2. Pull the recoil starter handle until resistance is felt. Then tip the snow blower back until it rests on the handles.
3. Remove the four carriage bolts and flange lock nuts which attach it to the snow blower housing. Refer to Figure 1 on page 12.
4. Reverse the existing shave plate or install a new one, making sure the new shave plate and the heads of the carriage bolts are on the inside of the housing.
5. Adjust the shave plate as instructed on page 12.
6. Tighten securely once adjusted.

A new shave plate may be obtained through an authorized Service Center or by calling 1-888-331-4569. Ask for part

731-07667.

Changing Engine Oil

WARNING
Shut off the engine and remove the ignition key before performing any maintenance. To prevent accidental start-up, disconnect the spark plug boot. Check oil level before each use and every 5 operating hours when the engine is warm. Refer to Checking and Adding Oil in the Assembly Section.

Change the oil after the first 5 operating hours and every 50 operating hours thereafter. Engine should still be warm but NOT hot from recent use.

1. Drain fuel from the tank by running the engine until the fuel tank is empty. Be sure the fuel fill cap is secure.

2. Remove the three screws that secure the lower panel on model 247.887802*. Remove the lower panel by lifting up on the panel to free the tabs at the bottom of the panel from the tab slots and then pull back. See Figure 7.
   NOTE: The bottom of the panel has tabs that help hold it in place.
   NOTE: An oil drain extension kit is available separately. Visit a Service Center or call 1-888-331-4569 and ask for kit #753-06684.

3. Place a suitable oil collection container under the oil drain plug.

4. Remove the oil drain plug, see Figure 8.

5. Tip the snow blower back to drain oil into the container. Used oil must be disposed of at a proper collection center.

6. Reinstall the drain plug and tighten it securely.

7. Refill with the recommended oil and check the oil level; refer to Checking and Adding Oil in the Assembly Section.

8. Reinstall the oil filler cap/dipstick securely.

9. Re-install the lower panel on model 247.887802* by placing the tabs in the tab slots, lifting the panel into place and secure with the three screws removed in step 2.

Off-Season Storage

Preparing the engine
Engines stored over 30 days need to be drained of fuel to prevent deterioration and gum from forming in the fuel system or on essential carburetor parts. If the gasoline in your engine deteriorates during storage, you may need to have the carburetor, and other fuel system components, serviced or replaced.

1. Remove all fuel from the tank by running the engine until it stops.

2. Change the engine oil.

3. Remove the spark plug and pour approximately 1 oz. (30 ml) of clean engine oil into the cylinder. Pull the recoil starter several times to distribute the oil, and reinstall the spark plug.

4. Clean the exterior of the engine by discarding dirt and debris from the following areas:
   CAUTION
   Do not spray the engine with water to clean it because the water could contaminate the fuel. Using a garden hose or pressure washing equipment can also force water into the muffler opening. Water that passes through the muffler can enter the cylinder and cause damage.

   • Cooling Fins
   • Air Intake Screen or Recoil Starter/Flywheel Guard Areas
   • Spark Plug Connection
   • Levers
   • Linkage Area
   • Guards
   • Carburetor
   • Engine Head

5. Store in a clean, dry, and well-ventilated area away from any appliance that operates with a flame or pilot light, such as a furnace, water heater, or clothes dryer. Avoid any area with a spark-producing electric motor, or where
   power tools are operated.
   WARNING
   Never store snow blower with fuel in tank indoors or in poorly ventilated areas, where fuel fumes may reach an open flame, spark, or pilot light as on a furnace, water heater, clothes dryer, or gas appliance.

6. If possible, avoid storage areas with high humidity.

7. Keep the engine level in storage. Tilting the engine can cause fuel or oil leakage.

Preparing Snow Blower
If the snow blower will not be used for 30 days or longer, follow the instructions below.

1. Store the equipment in a clean, dry area.
2. Wipe down the snow blower with a rag and remove any dirt or debris.
3. If storing the snow blower in an unventilated area, rustproof the metal parts of the machine with a light oil or silicone coating.

TROUBLESHOOTING

WARNING
Disconnect the spark plug wire and ground it against the engine to prevent unintended starting. Before performing any type of maintenance/service, disengage all controls and stop the engine. Wait until all moving parts have come to a complete stop. Always wear safety glasses during operation or while performing any adjustments or repairs.

This section addresses minor service issues. To locate the nearest authorized Service Center or to schedule service, call 1-888-331-4569.

2 . Blocked fuel line.

3 . The key is not inserted all the way.

4 . Spark plug wire disconnected.

5 . Faulty spark plug.

6 . Engine not primed.

7 . Engine flooded from excessive priming.

| 1 . Fill the tank with clean fresh gasoline.

2 . Contact a Sears Service Center.

3 . Insert key all the way.

4 . Connect wire to spark plug.

5 . Clean the spark plug, readjust the gap, or replace it.

6 . Push the engine primer button five to seven times for models CMXGBAM1054538, and CMXGBAM1054539, and three times for models CMXGBAM1054540, and CMGSB21179.

7 . Wait at least ten minutes before starting.

Engine running erratically/ inconsistent RPM (hunting or surging)| 1 . Engine running on choke.

2 . Fuel line blocked, or stale fuel.

3 . Water or dirt in the fuel system.

4 . Carburetor out of adjustment.

5 . Over-governed engine.

| 1 . Move the choke control to the RUN position. 2 . Contact an authorized Service Center.

3 . Run the engine until the fuel tank is empty. Refill with fresh fuel.

4 . Contact an authorized Service Center . 5 . Contact an authorized Service Center.

Engine overheats| 1.| The carburetor is out of adjustment.| 1.| Contact an authorized Service Center.
Loss of power| 1 . Spark plug wire loose.

2 . Vent in gas cap plugged.

| 1.

| Firmly connect the spark plug wire.

Clear vent.

Excessive vibration| 1.| Loose parts or damaged auger.| 1.| Stop the engine immediately and remove the key. Check for possible damage. Tighten all bolts and nuts. Repair as needed. If the problem persists, take the snow blower to an authorized Service Center.
Snow blower fails to self-propel| 1 . Auger control cable out of adjustment.

2 . Auger drive belt loose or damaged.

| 1 . Adjust the auger control cable as shown in the Service and Maintenance section.

2 . Replace the auger drive belt.

Auger continues to rotate| 1.| Auger control cable out of adjustment.| 1.| Adjust the auger control cable as shown in the Service and Maintenance section.
Unit fails to discharge snow| 1 . Chute assembly clogged.

2 . Foreign object lodged in the auger.

3 . Auger control cable out of adjustment. 4 . Auger belt loose or damaged.

| 1 . Stop the engine and disconnect the spark plug wire. Clean the chute and inside of the auger housing with a clean-out tool or stick.

2 . Stop the engine immediately and disconnect the spark plug wire. Remove the object from the auger.

3 . Adjust the auger control cable.

4 . Replace auger belt.

Product Manufactured by (Producto fabricado por): MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019.

References

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