MAINTENANCE AND REPAIR INSTRUCTIONS

MAINTENANCE AND REPAIR INSTRUCTIONS

NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these procedures take your unit to an authorized service dealer.

MAINTENANCE SCHEDULE

These required maintenance procedures should be performed at the frequency stated in the table. They should also be included as part of any seasonal tune-up.

WARNING: To prevent serious injury, never do maintenance or repairs with unit running. Always do maintenance and repairs on a cool unit. Disconnect spark plug wire to ensure the unit will not start.

FREQUENCY

MAINTENANCE REQUIRED

REFER TO:

Before Starting Engine

Fill fuel tank with fresh fuel

Page 13

 

 

Check oil

Page 20

 

 

 

Every 10 Hours

Clean and re-oil air filter.

Page 21

 

 

 

1st Change at 10 Hours

Change oil

Page 20

Every 25

Hours there after

Change oil

Page 20

Every 25

Hours

Clean Spark Arrestor

Page 24

 

 

 

10 hours on new engine

Check rocker arm to valve clearance and adjust as required

Page 22-23

Every 50

Hours

Check rocker arm to valve clearance and adjust as required

Page 22-23

Every 50

Hours

Check spark plug condition and gap

Page 24

 

 

 

 

LINE INSTALLATION

Always use genuine Ryobi 0.095 in. (2.41 mm.) replacement line. Larger line may make the engine overheat or fail.

WARNING: Never use metal-reinforced line, wire, or rope, etc. These can break off and become a dangerous projectile.

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 Bump Knob™clockwise (Fig. 32). Inspect the bolt inside the Bump Knob to make sure it moves freely. Replace the Bump Knob if damaged.

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.

Fig. 33

Indexing Teeth

Outer Spool MAINTENANCE SCHEDULE

Spring FREQUENCY

Inner Reel MAINTENANCE REQUIRED

Bolt

Fig. 34

Bump Knob™ REFER TO:

Fig. 32

18

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Ryobi 890r manual Maintenance And Repair Instructions, Maintenance Schedule, Frequency, Maintenance Required, Refer To