Craftsman 247.776370 - Manual (Page 15)

SERVICE AND MAINTENANCE
Change Engine Oil
« Only use high quality detergent oil rated with API service
classification SF, SG, or SH. Select the oil’s SAE viscosity grade
according to the expected operating temperature. Refer to opera­
tion section for viscosity chart.
* Change engine oil after the first five to eight hours of operation,
and every fifty hours or every season thereafter. Change oil every
twenty five hours when operating engine under heavy load or in
high temperatures.
To Drain Oil
1. Drain the fuel from the tank by running the engine until the fuel
tank is empty.
2. With engine OFF but still warm, disconnect spark plug wire and
keep it away from spark plug.
3. Remove square oil drain plug located at the base of the engine,
and drain oil into an appropriate receptacle. See Figure 13.
A CAUTION
Used oil is a hazardous waste product. Dispose of used oil properly.
Do not discard with household waste. Check with your local authori­
ties or Sears Service Center for safe disposal/recycling facilities.
A CAUTION
Do not use water to clean engine parts. Water could contaminate fuel
system. Use a brush or dry cloth.
4. Replace and tighten the oil drain plug.
5. When engine is drained of all oil, place engine level. Refill with
approximately 20 oz. of fresh oil. Fill to FULL line on dipstick. Do
not overfill. Refer to Gas And Oil Fill-Up in OPERATION section.
6. Replace oil fill dipstick and tighten.
7. Replace spark plug wire before starting.
A warning
Temperature of muffler and nearby areas may exceed 150° F (65°C).
Avoid these areas.
Carburetor Adjustment
The carburetor on this engine is not adjustable.
Engine Speed
A warning
Do not attempt to alter the engine speed by tampering with the
engine's governor linkage. Doing so could result in serious personal
injury and damage to the engine. The engine RPM has been set at
the factory.
Service Muffler
• inspect muffler periodically, and replace if necessary. Replace­
ment parts for the muffler must be the same and installed in the
same position as the original parts.
Clean Engine
• Daily or before every use, clean grass, chaff or accumulated
debris from engine. Keep linkage, spring, and controls clean.
Keep area around and behind muffler free of any combustible
debris.
• Keeping engine clean allows air movement around engine.
• Engine parts should be kept clean to reduce the risk of overheat­
ing and ignition of accumulated debris.
LUBRICATION
• Hopper Assembly- Lubricate the pivot points on the hopper
assembly with light oil once a season.
• Discharge Chute- Lubricate the pivot points on the discharge
chute with light oil once a season.
• Release Rod- Lubricate the release rod and spring with light oil
once a season.
CLEAN EQUIPMENT
• Clean the chipper shredder thoroughly after each use.
• Wash bag periodically with water. Allow to dry thoroughly in
shade.
• if the flail screen becomes clogged, remove and clean as
instructed below.
NOTE: Cleaning with a forceful spray of water is not recommended as
it could contaminate the fuel system.
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