Craftsman 316.79499 - Manual (Page 15)

MAINTENANCE AND REPAIR INSTRUCTIONS
SPARK PLUG
1. To remove spark plug (B) (Fig. 26) for cleaning or
replacement: make sure engine is off, spark plug is
cool, then grasp spark plug boot firmly and remove
from spark plug. Remove spark plug with correct
spark plug tool. Inspect, clean or replace as needed.
2. Spark plug gap = .025" (.635mm) (Figure 25).
3. Torque to 105 to 130 inch pounds (12 to 15 N•m).
Connect spark plug boot.
4. If need replace spark plug with Champion RDJ8J or
equivalent.
SPARK ARRESTOR SCREEN/
COLLAR ASSEMBLY
1. To replace spark arrestor screen/collar assembly (A)
(Figure 26), use a needle nose pliers and pinch an
edge of the collar. Pull out the whole spark arrestor
screen assembly.
2. Use the needle nose pliers to push in a new spark
arrestor screen assembly by opening the pliers slight-
ly to press the inner surface of the asembly securely
into place
STORAGE
Failure to follow these steps may cause varnish to form in
the carburetor which can cause difficult starting or per-
manent damage following storage.
1. Perform all the general maintenance recommended in
the Maintenance Section of your User Manual.
2. Clean exterior of engine and blower tubes.
3. Drain fuel from the fuel tank by running the unit dry or
by removing the fuel cap and tipping the motor hous-
ing/fuel tank over and draining oil/fuel mixture into a
container with the same 2-cycle fuel mixture.
4. After fuel is drained, start engine.
5. Run engine at idle until unit stops. This will purge the
carburetor of fuel.
6. Allow engine to cool (approx. 5 minutes).
7. Using a spark plug wrench, remove the spark plug.
8. Pour 1 teaspoon of clean 2-cycle oil into the
combustion chamber. Pull starter rope slowly several
times to coat internal components. Replace spark
plug.
9. Store unit in a cool, dry place away from any source
of ignition such as an oil burner, water heater, etc.
REMOVING A UNIT FROM STORAGE
1. Remove spark plug.
2. Pull starter rope briskly to clear excess oil from com-
bustion chamber.
3. Clean and gap spark plug or install a new spark plug
with proper gap. (Fig. 25)
4. Prepare unit for operation.
5. Fill fuel tank with proper fuel / oil mixture. See Fuel
and Lubrication Section.
Fig. 25
.025" (.635mm)
Fig. 26
A
B
Spark
Plug
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