Maintenance - Craftsman 316.792520 Operator's Manual

WARNING:
To prevent serious injury, never perform
maintenance or repairs while the unit is running. Always
allow the unit to cool before servicing or repairing the unit.
Prevent the unit from starting accidentally. For gas-
powered units, disconnect the spark plug wire. For battery-
powered units, remove the battery. For corded electric
units, disconnect the unit from the power source.
REPLACING THE TRIMMING LINE
Only use the trimming line described in the Specifications section.
Other types of trimming line may cause the engine to overheat or fail.
WARNING:
Never use metal-reinforced line, wire, chain or
rope. These can break off and become dangerous projectiles.
NOTE: Always use the correct line length when installing trimming
line. The line may not release properly if the line is too long.
Part 1 - Removing the Inner Reel
1. Hold the outer spool with one hand and unscrew the bump knob
counterclockwise (Fig. 9).
NOTE: The outer spool will remain attached to the unit.
2. Inspect the bolt inside the bump knob to make sure it moves freely.
Replace the bump knob if it is damaged.
3. Remove the inner reel from the outer spool (Fig. 10).
4. Remove the spring from the inner reel (Fig. 10).
5. Use a clean cloth to clean the inner reel, spring, shaft and inner
surface of the outer spool.
6. Check the indexing teeth and holding slots for wear (Fig. 11). If
necessary, remove burrs or replace the inner reel and outer spool.
Proceed to Part 2 - Winding New Trimming Line onto the Inner Reel.

MAINTENANCE

Outer Spool
Outer Spool
Shaft
10
Bolt
Bump Knob
Fig. 9
Spring
Fig. 10
Indexing Teeth
Holding Slots
Fig. 11
Inner Reel