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Full A Check Crankcase Oil Level Figure 17 TEMPERATURE TYPE OF OIL 0°F (-18°C) and above S.A.E. 5W30 0°F (-18°C) and below Synthetic 5W30 F .20 0 20 32 40 C .30 .20 .10 0 10 5W30 Synthetic 5W30 SAE VISCOSITY GRADES A Oil Drain Plug Figure 18 20 MAINTENANCE CHANGE THE SPARK PLUG Remove the Snow Hood 1. Remove the choke control knob (AA, Figure 19). 2. Remove the safety key (BB). 3. Remove the mounting screws (AA, Figure 20). 4. Slowly remove the snow hood (BB) Make sure that the primer button hose (CC) and the ignition wire (DD) are not disconnected. 5. The spark plug (EE) can now be accessed. 6. To install the snow hood, first make sure that the primer button hose and the ignition wire are connected. 7. Mount the snow hood to the engine and secure with the mounting screws. 8. Connect the choke control knob (AA, Figure 21) with the choke shaft on the carburetor (BB). Make sure the choke control knob is properly installed. If the choke control knob is not installed correctly, the choke will not operate. 9. Install the safety key (CC). Removing the Snow Hood Figure 20 A C B D E B A Snow Thrower Engine Figure 19 A B C Connecting Choke Control Knob Figure 21 21 MAINTENANCE Check and Replace Spark Plug Check the spark plug every twenty-five (25) hours. Replace the spark plug (Figure 22) if the electrodes are pitted or burned or if the porcelain is cracked. 1. Remove snow hood (see “Remove the Snow Hood” section). 2. Clean spark plug and reset gap periodically. 3. Clean area around spark plug base before removal, to prevent dirt from entering engine. 4. Replace spark plug if electrodes are pitted or burned or if porcelain is cracked. 5. Clean spark plug by carefully scraping electrodes (do not sandblast or use wire brush). 6. Be sure spark plug is clean and free of foreign material. Check electrodes gap with a wire feeler gauge and reset gap to 0.030" (0.76 mm) if necessary. 7. Before installing spark plug, coat threads lightly with graphite grease to insure easy removal. 8. Tighten plug firmly into engine. If torque wrench is available, tighten plug to 18-23 ft-lbs (24.4-31.2 Nm). .030 in. (.76 mm) Replacing Spark Plug Figure 22 WARNING: Always turn unit off, remove ignition key, and disconnect the spark plug wire before making any repairs or adjustments. ADJUST SKID HEIGHT This snow thrower is equipped with two height adjust skids, secured to the outside of the auger housing. These elevate the front of the snow thrower. When removing snow from a hard surface area such as a paved driveway or walk, adjust the skids up to bring the front of the snow thrower down. When removing snow from rock or uneven construction, raise the front of the snow thrower by moving the skids down. This will help to prevent rocks and other debris from being picked up and thrown by the augers. To adjust skids, proceed as follows: 1. Place a block (equal to height from ground desired) under scraper bar near but not under skid. 2. Loosen skid mounting nuts (AA, Figure 23) and push the skid down (BB) until it touches the ground. Retighten mounting nuts. 3. Set skid on other side at same height. NOTE: Make sure that snow thrower is set at same height on both sides. WARNING: Be certain to maintain proper ground clearance for your particular area to be cleared. Objects such as gravel, rocks, or other debris, if struck by the impeller, may be thrown with sufficient force to cause personal injury, property damage, or damage to the snow thrower. A B Adjusting Skid Height Figure 23 22 MAINTENANCE BELT ADJUSTMENT Traction Drive Belt The traction drive belt has constant spring pressure and does not require an adjustment. If the traction drive belt is slipping, replace the belt. See authorized dealer. Auger Drive Belt If your snow thrower will not discharge snow, check the control cable adjustment. If it is correct, then check the condition of the auger drive belt. If it is damaged or loose, replace it (see authorized dealer). 1. Disconnect spark plug wire. 2. Remove screw (AA, Figure 24) from belt cover (BB). Remove belt cover. 3. Loosen nut on idler drive pulley (A AA, Figure 25) and move idler drive pulley towards belt about 1/8 inch (3 mm). WARNING: Do not over-tighten, as this may lift the lever and cause the auger drive to be engaged without depressing the auger control. A B Adjusting Auger Drive Belt Figure 24 4. Tighten nut. 5. With the aid of an assistant, engage the auger drive clutch. Check tension on belt which is opposite idler pulley (BB, Figure 25). Belt should deflect about 1/2 inch (12.5 mm) with moderate pressure. You may have to move idler pulley more than once to obtain the correct tension. 6. Release the auger drive control lever. TThe auger must stop within five (5) seconds. 7. If auger does not operate properly, stop engine and recheck drive linkage adjustments. 8. Reinstall belt cover (BB, Figure 24). Tighten screw (AA). 9. Whenever belts are adjusted or replaced, the cables will need to be adjusted (see “Check and Adjust the C...

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