15
MAINTENANCE
REPLACING & CLEANING THE AIR FILTER
The air filter elements should be cleaned to provide
the engine abundant clean air which benefits the
starting, power and life time of the engine.
Remove the air filter cover by unscrewing the
screw on the air filter cover., Fig.26.
Remove the air filter, Fig.27.
Clean the foam filter element with warm soapy
water. Rinse and let dry completely.
NOTE:
If the foam filter element is damaged, it
should be replaced.
Apply a light coat of engine oil to the foam filter
element, then squeeze it out.
Reinstall the air filter.
NOTE:
Make sure the filter is seated properly
inside the cover. Installing the filter incorrectly will
allow dirt to enter the engine, causing rapid engine
wear.
Replace the air filter cover and tighten the screw.
SPARK PLUG
Do not attempt to remove the spark plug from a hot
engine.
Clean or replace the spark plug if it is soiled with
heavy oil deposits.
Replace the spark plug if the centre electrode is
worn at the end.
This engine uses a L7T/LD spark plug with a
0.6-0.7mm electrode gap, Fig.28. Use an exact
replacement and replace annually.
1. Pull out the spark plug cap and clean the dust in
the spark plug area.
2. Screw out the spark plug with the provided
socket wrench.
3. Check the ceramic isolation. Replace the spark
plug if damaged.
4. Clean the electrodes (metal tip) to refresh the
surfaces.
5. Restore the spark plug and its cap.
NOTE:
Be careful not to cross-thread the spark
plug. Cross-threading will seriously damage the
product.
CLEANING THE EXHAUST PORT AND
MUFFLER
NOTE: Depending on the type of fuel used, the
type and amount of oil used, and/or your operating
conditions, the exhaust port, muffler, and/or spark
arrestor screen may become blocked with carbon
deposits. If you notice a power loss with your gas
powered tool, you may need to remove these
deposits to restore performance. We highly
recommend that only qualified service technicians
perform this service.
Fig. 26
Fig. 27
Fig. 28
0.6-0.7mm
Summary of Contents for RBC-33
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