Ryobi 890R - Manual (Page 18)

MAINTENANCE AND REPAIR INSTRUCTIONS
18
Indexing Teeth
Fig. 33
Fig. 34
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.
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. 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.
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
Inner Reel
Spring
Outer Spool
Bump Knob™
Bolt
Fig. 32