Carburetor
WARNING: If any adjustments are made to the engine while the engine is running (e.g. carburetor), keep clear of all moving parts. Be careful of heated surfaces and mufflers.
Minor carburetor adjustments may be required to compensate for differences in fuel temperature, altitude and load.
Service
Augers
The augers are secured to the spiral shaft with two shear bolts and hex lock nuts. If you hit a foreign object or ice jam, the snow thrower is designed so that the bolts will shear. See Figure 22. Lock nuts cannot be threaded onto a bolt by hand. This type of nut is used where vibration occurs.
If the augers do not turn, check to see if the bolts have sheared. Two replacement shear bolts (shown in Figure 22 inset ) and hex lock nuts have been provided with the snow thrower. When replacing bolts, spray an oil lubricant into shaft before inserting new bolts.
| Shear Bolt |
Shear Bolt | Shave Plate |
Figure 22
Shave Plate And Skid Shoes
The shave plate and skid shoes on the bottom of the snow thrower are subject to wear. They should be checked periodically and replaced when necessary.
•Remove the four carriage bolts, belleville washers and hex nuts which attach skid shoes to the snow thrower on two sides. See Figure 22.
•Reassemble new skid shoes with the four carriage bolts, belleville washers (cupped side goes against skid shoes) and hex nuts. Make certain the skid shoes are adjusted to be level.
•To remove shave plate, remove the skid shoe and the rest of hardware including carriage bolts, belleville washers and hex nuts which attach shave plate to the snow thrower housing. For location of shave plate, see Figure 22.
•Reassemble new shave plate, making sure
heads of the carriage bolts are to the inside of the housing. Reinstall skid shoe. Tighten securely.
Replacing Belt
WARNING: Disconnect the spark plug wire from the spark plug and ground.
Auger Belts
•Remove the plastic belt cover on the front of the engine by removing the two
Belt Cover |
Figure 23
•Disconnect chute crank assembly at the discharge chute by removing the hairpin clip and the two flat washers. See Figure 24.
| Chute |
Hairpin Clip | Crank |
Flat
Washer
Figure 24
•Remove the six hex nuts and lock washers which attach the auger housing assembly to the frame assembly. See Figure 25.
WARNING: Do not attempt to change the auger belt without the help of an assistant. It is very important that one person, standing at the operating position, firmly hold the snow thrower housing to prevent it from tipping while the other person replaces the belt. Failure to comply with this may result in injury.
ADJUSTMENTS
21
