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GB-14
11. Troubleshooting guide
Case 1. Starting failure
CHECK PROBABLE CAUSES ACTION
fuel tank
A
incorrect fuel
A
drain it and use correct fuel
fuel filter
A
fuel filter is clogged
A
clean
carburetor adjustment screw
A
out of normal range
A
adjust to normal range
sparking (no spark)
A
spark plug is fouled/wet
A
clean/dry
A
plug gap is incorrect
A
correct (GAP: 0.6 ~ 0.7 mm)
spark plug
A
disconnected
A
retighten
Case 2. Engine starts but does not keep running/hard re-starting
CHECK PROBABLE CAUSES ACTION
fuel tank
A
incorrect fuel or staled fuel
A
drain it and use correct fuel
carburetor adjustment screw
A
out of normal range
A
adjust to normal range
muffler, cylinder (exhaust port)
A
carbon is built-up
A
wipe away
air cleaner
A
clogged with dust
A
wash
cylinder fin, fan cover
A
clogged with dust
A
clean
When your unit seems to need further service, please consult with our HITACHI service shop in your area.