Yamaha EF2800i - Inverter Generator, Service Manual

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3-45
ENG
TROUBLESHOOTING
ENGINE SPEED DOES NOT INCREASE
Check if the electric equipment
consumes too much wattage for
this generator.
GOOD TOO MUCH Use a generator with a larger capacity.
Check air filter element for dirt.
GOOD NOT GOOD Clean.
Check spark plug for dirt and
check spark plug gap.
GOOD NOT GOOD Clean or adjust.
Check valve clearance.
GOOD
OUT OF SPECI-
FICATION
Adjust.
Check if main passages such as,
the main jet, in the carburetor are
clogged.
GOOD NO GOOD Disassemble or clean.
Check for air suction due to a
damaged throttle shaft seal, car-
buretor joint, or gasket.
GOOD NO GOOD Disassemble or replace.
Check compression using com-
pression gauge.
GOOD
TOO HIGH Decarbonize combustion chamber if there are
carbon deposits.
TOO LOW
Check valve face and valve seat
for wear.
GOOD WEAR Resurface or replace.
Check if the timing marks on the
crankshaft and camshaft are
aligned.
GOOD NO GOOD Correct.
Check if there is seizure or wear
on piston, piston ring, or cylinder.
GOOD
SEIZURE OR
WEAR
Rebore or replace.
Check the condition of the throttle
control system.
Refer to “THROTTLE CONTROL
SYSTEM”.