MAINTENANCE AND REPAIR INSTRUCTIONS

MAINTENANCE SCHEDULE

Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal tune-up.

NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these procedures take your unit to any non-road engine repair establishment, individual or authorized service dealer.

NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by any non-road engine repair establishment, individual or authorized service dealer.

WARNING: To prevent serious injury, never perform

maintenance or repairs with unit running. Always service and repair a cool unit. Disconnect the spark plug wire to ensure that the unit cannot start.

FREQUENCY

MAINTENANCE REQUIRED

REFER TO

 

 

 

Before starting engine

Fill fuel tank with fresh fuel

Page 12

Check oil

Page 21

 

 

 

 

Every 10 hours

Clean and re-oil air filter

Page 22

 

 

 

First change at 10 hours

Change oil

Page 22

Every 25 hours thereafter

Change oil

Page 22

Every 25 hours

Clean spark arrestor

Page 26

 

 

 

10 hours on new engine

Check rocker arm to valve clearance and adjust

Page 24

Every 25 hours

Check rocker arm to valve clearance and adjust

Page 24

Every 25 hours

Check spark plug condition and gap

Page 26

 

 

 

BUMP HEAD (CC4090 ONLY)

LINE INSTALLATION

This section covers both SplitLine™ and standard single line installation.

Always use 0.105 in. (2.67 mm) original equipment manufacturer replacement line. Line other than the specified may make the engine overheat or fail.

2.Remove the inner reel from the outer spool (Fig. 32).

3.Remove spring from the inner reel (Fig. 32).

4.Use a clean cloth to clean the the inner reel, spring, shaft and inner surface of the outer spool (Fig. 33).

5.Check the indexing teeth on the inner reel and outer spool for wear (Fig. 34). If necessary, remove burrs or replace the reel and spool.

WARNING: Never use metal- reinforced line, wire,

chain or rope. These can break off and become dangerous projectiles.

There are two methods to replace the trimming line:

•Wind the inner reel with new line

•Install a prewound inner reel

Winding the Existing Inner Reel

1. Hold the outer spool with one hand and unscrew the

Fig. 33

Bump Knob clockwise (Fig. 32). Inspect the bolt inside

 

the bump knob to make sure it moves freely. Replace

 

the bump knob if damaged.

Indexing Teeth

Outer Spool

 

Spring

 

Inner Reel

 

Bolt

 

Bump Knob

Fig. 34

 

Fig. 32

 

17