Craftsman 247.88045 - Manual (Page 15)

1
SERVICE AND MAINTENANCE
Checking Spark Plug
Check spark plug yearly or every 100 operating hours
Clean area around spark plug.
Remove and inspect spark plug.
Replace spark plug if porcelain is cracked or if electrodes are
pitted, burned or fouled with deposits
Check electrode gap with a feeler gauge and set gap to .030
(0.76mm) if necessary. See Figure 15.
Reinstall spark plug and tighten securely.
NOTE: A resistor spark plug must be used for replacement. Contact a
Sears Parts and Repair Center for a replacement spark plug.
Carburetor
If you suspect your carburetor needs adjusting, see a Sears Parts and
Repair Center. Engine performance should not be affected at altitudes
up to 7,000 feet (2,134 meters). For operation at higher elevations,
contact a Sears Parts and Repair Center.
engine Speed
LUbriCaTion
Drive and Shifting Mechanism
At least once a season or after every 25 hours of operation, remove
rear cover. Lubricate all chains, sprockets, gears, bearings, shafts, and
the shifting mechanism. Use engine oil or a spray lubricant. Refer to
Figure 16.
NOTE: Be careful not to get any oil on the aluminum drive plate or
rubber friction wheel. Doing so will hinder the snow thrower’s drive
system. Wipe off any excess or spilled oil.
Wheels
At least once a season, remove both wheels. Clean and coat the axles
with a multipurpose automotive grease before reinstalling wheels.
Chute Directional Control
Once a season, lubricate the eye bolt bushing and the spiral with
3-in-1 oil.
auger Shaft
At least once a season, remove the shear pins on auger shaft. Spray
lubricant inside shaft, and around the spacers and flange bearings
found at either end of the shaft. See Figure 17.
1.
2.
3.
4.
5.
Figure 15
2
3
1
1. .030 (.76 mm) Gap
2. Electrodes
3. Porcelain
Warning
Avoid serious injury or death, DO NOT modify engine in any way.
Tampering with the governor setting can cause the engine and
equipment to operate at unsafe speeds. NEVER tamper with factory
setting of engine governor. Running the engine faster than the speed
set at the factory is dangerous.
Figure 16
Figure 17