[11] REGULAR MAINTENANCE
From time to time make sure all brush cutter screws are
firmly secured. Replace damaged, worn, cracked or warped-
blades. Always make sure nylon string head and blade have
been assembled correctly (see section BLADE AND
NYLON STRING HEAD ASSEMBLY) and blade fastener
is tightened.
- 13 -
1. AIR FILTER
AIR FILTER CLEANING (at least every 25 working hours).
A dust clogged air filter may cause carburetor problems.
This may prevent the engine from reaching its maximum
r.p.m. and cause high fuel consumption and/or difficult
starting. Remove filter cover. Carefully clean the inside of
filter box. The filter can also be cleaned with compressed air.
2. GEARCASE
Every 50 working hours inject the gearcase with gear grease
under high pressure through hole A.
3. SPARK PLUG
electrode cap
Fig.11-3
From time to time (at least every 50 hours) remove and
clean the spark plug and check the electrode cap. Replace
spark plug about every 100 working hours or whenever it is
extremely encrusted.
Heavily encrusted electrodes can result from an incorrect
carburetor setting or from wrong fuel mixture (too much oil
in the petrol) or a poor quality oil in the fuel mix. Check and
correct.
Please refer to the Engine Operation Manual for information
about changing the spark plug and the electrode cap.
Fig.11-1
A
Fig.11-2
