9
MAINTENANCE
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.
For gas-powered units, disconnect the spark plug wire to
prevent the unit from starting accidentally. For electric-
powered units, disconnect the unit from the power source
to prevent the unit from starting accidentally.
NOTE:
Some maintenance procedures may require special tools or
skills. If you are unsure about these procedures, take the unit to
an MTD authorized service dealer.
Fig. 9
Fig. 10
Fig. 11
Bolt
Bump Knob
Outer Spool
Spring
Inner Reel
Indexing Teeth
Outer Spool
Shaft
Holding Slots
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.
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.
WARNING:
Never use metal-reinforced line, wire, chain or
rope. These can break off and become dangerous projectiles.
