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M MC621 C621
Owner's Manual
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CONGRATULATIONS on your purchase of a new snow thrower. It has been designed, engineered and man u fac tured to give best possible dependability and per for mance. Should you experience any problem you cannot easily remedy, please contact your nearest authorized service center. We have competent, well-trained tech ni cians and the proper tools to service or repair this unit. Please read and retain this manual. The instructions will enable you to assemble and maintain your snow thrower prop
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2. Exercise extreme caution when operating on or cross- Maintenance and Storage ing gravel drives, walks, or roads. Stay alert for hidden 1. Check shear bolts and other bolts at frequent intervals hazards or traffic. for proper tightness to be sure the equipment is in safe 3. After striking a foreign object, stop the engine (motor), working condition. disconnect the cord on electric motors, thoroughly 2. Never store the machine with fuel in the fuel tank inside inspect the snow thrower fo
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TABLE OF CONTENTS SAFETY RULES ........................................................ 2-3 MAINTENANCE ..................................................... 11-15 PRODUCT SPECIFICATIONS ...................................... 3 STORAGE ................................................................... 16 CUSTOMER RESPONSIBILITIES ................................ 3 TROUBLESHOOTING ................................................ 17 SAFETY AND INSTRUCTIONAL DECALS ................. 4 REPAIR PARTS
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Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure Description Qty. Use No parts required – Unfold the handle. 1. Carriage bolts 5 Install the discharge chute. 2. Flange nuts 4 Install the discharge chute. Washers 2 Install the discharge chute. Knob 1 Install the discharge chute. Chute 1 Deflector 1 1. Unfolding the Handle 2. Installing the Discharge Chute Procedure 1. Loosen the two handle knobs and pull out the two 5 Carriage bolts handle bolts
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3. Filling the Engine with Oil Product Overview ENGINE See engine manual. 13 LUBRICATION 1 4 Use only high quality detergent oil rated with API service classification SG–SL. Select the oil's SAE viscosity grade 2 according to your expected operating temperature. 12 NOTE: Although multi-viscosity oils (5W30, 10W30 etc.) improve starting in cold weather, these multi-viscosity oils 5 3 will result in increased oil consumption when used above *11 32°F. Check your engine oil level more frequen
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NOTE: For best results, purchase only the quantity of Operation gasoline that you expect to use in 30 days. Otherwise, you may add fuel stabilizer to newly purchased gasoline NOTE: Determine the left and right sides of the machine to keep it fresh for up to 6 months. from the normal operating position. Checking the Engine Oil Level • Gasoline is extremely flammable and explosive. A fire or explosion from gasoline can burn you NOTE: 10W30 synthetic oil is acceptable for use in cold and ot
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3. Firmly push in the primer 3 times with your thumb, Starting the Engine holding the primer in a for a second before releasing it each time (Figure 12). 1. Push key in (Figure 10). 1 1 Figure 12 1. Primer Figure 10 1. Key NOTE: Remove your glove when you push in the primer so that air cannot escape from the primer hole. 2. Move choke lever to left position (Figure 11). IMPORTANT: Do not use the primer or the choke if the engine has been running and is hot. Excessive priming may flood th
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Engaging the Auger Blades The electrical cord can become damaged, causing To engage the auger blades, hold the control bar against a shock or fire. the handle (Figure 15). Thoroughly inspect the electrical cord before plug- ging it into a power source. If the cord is damaged, do not use it to start the snowthrower. Replace or repair the damaged cord immediately. Contact an Authorized Service Dealer for assistance. 1 1 Figure 15 1. Control bar Disengaging the Auger Figure 14 Blades 1. Recoi
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Stopping the Engine Clearing a Clogged Discharge Chute To stop the engine, pull key out (Figure 17). Hand contact with the rotating auger blades 1 inside the discharge chute is the most common cause of injury associated with snow throwers. Never use your hand to clean out the discharge chute. To clear the chute: 1. SHUT THE ENGINE OFF! 2. Wait 10 seconds to be sure the auger blades have stopped rotating. 3. Always use a clearing tool at least 15 inches long, not your hands (Figure 19). 1
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Operating Tips • The best time to remove snow is the early morning. At this time the snow is usually dry and has not been exposed to the direct sun and warming tem per a tures. The auger blades can throw stones, toys, and • Slightly overlap each successive path to ensure all other foreign objects and cause serious personal snow will be removed. injury to the operator or to bystanders. • Throw snow downwind whenever possible. • Keep the area to be cleared free of all objects that the auge
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Adjusting the Control Cable Adjusting the Control Cable 1. With the control bar disengaged, unhook and move Checking the Control Cable the control cable to the highest position. (Figure 21). Release the control bar to remove the slack in the control 1 cable (Figure 20). Position 2 2 3 1 Position 1: Default position (Lower Hole as shown in illustration) Figure 21 1. Control bar 2. Adjuster link 3. Cable positions Figure 20 1. Control bar Inspecting the Auger Blades Before each session, insp
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7. Clean around the oil filler cap/dipstick (Figure 24). Changing the Engine Oil 8. Unscrew the oil fill cap/dipstick and remove it (Figure 24). Run the engine a few minutes before changing the oil to warm it. Warm oil flows better and carries more 9. With the snowthrower in the operating position, care- contaminants. fully pour oil into the oil fill hole until "Full" on the fill cap/dipstick line (Figure 26). Max fill: 18 oz. (0.5 l), type: automotive detergent oil with an API service
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5. Remove the oil fill cap. Servicing the Spark Plug 6. Remove the shroud assembly (Figure 28). 7. Install the oil fill cap. Use a NGK BPR6ES, Champion RN9YC, or BOSCH WR6DC spark plug or equivalent. 8. Disconnect the spark plug wire from the spark plug (Figure 29). 1. Stop the engine and wait for all moving parts to stop. 9. Clean around the spark plug. 2. Rotate the discharge chute so that it faces forward. 10. Remove the spark plug from the cylinder head. 3. Remove the discharge ch
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4. Install the new drive belt, routing it as shown in Replacing the Drive Belt (Figure 32). NOTE: Route the new drive belt first around the engine If drive belt becomes worn, oil-soaked, excessively pulley, then the idler pulley, and finally around the drive cracked, frayed, or otherwise damaged, replace the belt. pulley while pressing down on the front of the idler arm. 1. Remove the drive side cover by removing the six screws (Figure 32). as shown in (Figure 31). 5. Install the drive
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ENGINE OIL Storage Drain oil (with engine warm) and replace with clean engine oil. (See “Changing the Engine Oil” section of this man ual). Storing the Snowthrower CYLINDER Immediately prepare your snow thrower for storage at 1. Remove spark plug. the end of the season or if the unit will not be used for 30 2. Pour one ounce (29 ml) of oil through spark plug hole days or more. into cylinder. 3. Pull recoil starter handle slowly a few times to dis trib ute oil. WARNING: Never store the snow
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Troubleshooting See appropriate section in manual unless directed to an authorized service center/department. PROBLEM CAUSE CORRECTION Does not start 1. Fuel shut-off valve (if so 1. Turn fuel shut-off valve to OPEN position. equipped) in OFF position. 2. Safety ignition key 2. Insert safety ignition key. is not inserted. 3. Out of fuel. 3. Fill fuel tank with fresh, clean gasoline. 4. Throttle in STOP position 4. Move throttle to FAST position (or ON/OFF switch is OFF). (or ON/OFF
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REPAIR PARTS SNOW THROWER - - MODEL NUMBER MC621 (96188000300) CHUTE ASSEMBLY 1 4 4 2 4 2 5 18 3 6 19 19 7 17 6 8 15 20 16 9 15 10 11 21 19 SSST-Chute asm_5 4 NOTE: All component dimensions given in U.S. inches. 1 inch = 25.4 mm IMPORTANT: Use only Original Equipment Manufacturer (O.E.M.) replacement parts. Failure to do so could be hazardous, damage your snow thrower and void your warranty. 18
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REPAIR PARTS SNOW THROWER - - MODEL NUMBER MC621 (96188000300) CHUTE ASSEMBLY KEY PART NO. NO. QTY DESCRIPTION 1 532 43 48-77 1 CHUTE.RATCHETING.PLASTIC.W/GRV 2 532 43 76-40 2 PLATE.CHUTE.RETAINER 3 532 43 76-35 1 PLATE.CHUTE.BASE 4 817 41 13-12 6 BOLT.HEX.WSH.HD.13-16 X 3/4 5 532 43 76-42 1 HANDLE.CHUTE.MS428 6 873 97 05-00 4 NUT.LOCK.HX.W/INS 5/16-18 UNC PL 7 532 43 48-79 1 SPRING.RATCHET.ARM 8 532 08 13-28 1 BOLT.SHOULDER.1/4-20 UNC X .94 9 532 43 48-78 1 ARM.CHUTE.RATCHET 10 532 1
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REPAIR PARTS SNOW THROWER - - MODEL NUMBER MC621 (96188000300) HANDLE ASSEMBLY 1 2 5 4 3 5 6 SSST-Handle asm_1 KEY PART NO. NO. QTY DESCRIPTION 1 532 43 76-67 1 BAIL.HANDLE.PAINT.MS431 2 532 43 76-64 1 HANDLE.PNT.UPPER.SSST 3 532 43 48-06 1 CONTROL.CABLE 4 532 19 19-38 2 KNOB.HANDLE.BLACK 5 532 19 15-74 2 BOLT.HANDLE.BLACK PATCHED 6 532 14 50-06 1 CLIP.PUSH-IN.HINGED NOTE: All component dimensions given in U.S. inches. 1 inch = 25.4 mm IMPORTANT: Use only Original Equipment Manufa
