Storage; Troubleshooting Guide - Zenoah BC3500DLM Owner's Manual

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.

11. Troubleshooting guide

Case 1. Starting failure
CHECK
fuel tank
fuel filter
carburetor adjustment screw
sparking (no spark)
spark plug
Case 2. Engine starts but does not keep running/hard re-starting
CHECK
fuel tank
carburetor adjustment screw
muffler, cylinder (exhaust port) → carbon is built-up
air cleaner
cylinder fin, fan cover
When your unit seems to need further service, please consult with our ZENOAH service shop in your area.
ANGLE TRANSMISSION
• The reduction gears are lubricated by multipurpose,
• Remove the cutter holders before installing new

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.
PROBABLE CAUSES
→ incorrect fuel
→ fuel filter is clogged
→ out of normal range
→ spark plug is fouled/wet
→ plug gap is incorrect
→ disconnected
PROBABLE CAUSES
→ incorrect fuel or staled fuel → drain it and use correct fuel
→ out of normal range
→ clogged with dust
→ clogged with dust
lithium-based grease in the gear case. Supply new
grease every 25 hours of use or more often depend-
ing on the job condition.
grease to arrange for old grease to exit.
ACTION
→ drain it and use correct fuel
→ clean
→ adjust to normal range
→ clean/dry
→ correct (GAP: 0.6 - 0.7 mm)
→ retighten
ACTION
→ adjust to normal range
→ consult with the repair specialty store
→ air blow or wash
→ consult with the repair specialty store
BC3500DLM / BC3500DWM
GB-17
G
B