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

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

Spring

Inner Reel

Bolt

Fig. 34

Bump Knob™

Fig. 32

18