Zenoah BC3500DWM - Manual (Page 17)

GB-17
BC3500DLM / BC3500DWM
G
B
9. Maintenance
INTAKE AIR COOLING VENT
WARNING
• Check the intake air cooling vent after every 25
hours of use for blockage, and remove any waste
which has attached itself to the brushcutter.
IMPORTANT
• If waste gets stuck and causes blockage around the
intake air cooling vent, it may cause the engine to
overheat, and that in turn may cause mechanical
failure on the part of the machine.
(1) Intake air cooling vent (back)
■ PERIODICAL SERVICE POINTS
1. Cylinder fins
Periodically check and clean the cylinder fins in the
repair specialty store.
ANGLE TRANSMISSION
• The reduction gears are lubricated by multipurpose,
lithium-based grease in the gear case. Supply new
grease every 25 hours of use or more often depend-
ing on the job condition.
• Remove the cutter holders before installing new
grease to arrange for old grease to exit.
10. Storage
Aged fuel is one of major causes of engine starting
failure. Before storing the unit, empty the fuel tank and
run the engine until it uses all the fuel left in the fuel line
and the carburetor. Store the unit indoor taking neces-
sary measures for rust prevention.
11. Troubleshooting guide
Case 1. Starting failure
CHECK PROBABLE CAUSES ACTION
fuel tank → incorrect fuel → drain it and use correct fuel
fuel filter → fuel filter is clogged → clean
carburetor adjustment screw → out of normal range → adjust to normal range
sparking (no spark) → spark plug is fouled/wet → clean/dry
→ plug gap is incorrect → correct (GAP: 0.6 - 0.7 mm)
spark plug → disconnected → retighten
Case 2. Engine starts but does not keep running/hard re-starting
CHECK PROBABLE CAUSES ACTION
fuel tank → incorrect fuel or staled fuel → drain it and use correct fuel
carburetor adjustment screw → out of normal range → adjust to normal range
muffler, cylinder (exhaust port) → carbon is built-up → consult with the repair specialty store
air cleaner → clogged with dust → air blow or wash
cylinder fin, fan cover → clogged with dust → consult with the repair specialty store
When your unit seems to need further service, please consult with our ZENOAH service shop in your area.