Craftsman 47.881701 Operator's Manual page 17

NOTE: When installing a new spark plug, tighten 1⁄2-turn after the spark plug seats
to compress the washer. When reinstalling a used spark plug, tighten 1⁄8- to 1⁄4-
turn after the spark plug seats to compress the washer.General Recommendations.
1. Always observe safety rules when performing any maintenance.
2. 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.
3. Periodically check all fasteners and hardware to make sure these are tight.
Replacing the Shave Plate and Skid Shoes
The shave plate and skid shoes on the bottom of the snow thrower are subject to
wear. These should be checked periodically and replaced when necessary.
1. To replace, remove two carriage bolts and nuts securing each skid shoe to
the auger housing. See Figure 15.
2. Reassemble new skid shoes with hardware just removed. Make sure the skid
shoes are adjusted to be level.
3. To remove shave plate: Remove both skid shoes and hardware including
carriage bolts and nuts which attach shave plate to the snow thrower
housing. For location of shave plate, see Figure 15.
Shear Pin
Carriage Bolt
Shave Plate
Lock Nut
4. Reassemble new shave plate, making sure heads of the carriage bolts are to
the inside of the housing. Reinstall skid shoes. Tighten securely.
Servicing Auger
The auger is secured to the spiral shaft with four shear pins and cotter pins. If you
hit a foreign object or ice jam, the snow thrower is designed so that the pins may
shear. Refer to Figure 15.
If the auger does not turn, check if the pins have sheared. Replace, if needed, with
proper shear pins. Refer to the Parts List in this manual for the correct part number.
IMPORTANT: NEVER replace the auger shear pins with standard pins or fasteners.
Any damage to the auger gearbox or other components, as a result of doing so, will
NOT be covered by your snow thrower's warranty.
MAINTENANCE & SERVICE
Cotter Pin
Skid Shoe
Carriage Bolt
Lock Nut
Figure 15
Lubrication
For a view of the lubrication points on the snow thrower, see Figure 16.
1. Lubricate pivot points on the auger control and drive control with a light
engine oil once a season.
2. Lubricate the auger idler bracket with a light engine oil once a season.
Engine
Listed below are general recommendations about maintaining your snow thrower
engine.
1. Before operating snow thrower, check the oil level.
2. Change engine oil after first five hours of operation and every 50 hours
thereafter.
3. Clean spark plug and reset the electrode gap to 0.030" at least once a season
or every 100 hours of operation; replace every 200 hours of operation.
17
Figure 16