Yamaha EF3000iSE Service Manual page 94

ENGINE STARTS BUT STALLS
Check fuel level.
SUFFI- INSUFFI-
CIENT CIENT
Check if fuel cock is
clogged.
GOOD NO GOOD
Check if fuel pipe, fuel hose
and fuel pipe strainer are
clogged.
GOOD NO GOOD
• Check if carburetor
retaining nuts are loose.
• Check if there is air suc-
tion due to a damaged
carburetor joint or gas-
ket.
GOOD NO GOOD
Measure valve clearance.
OUT OF
GOOD SPECIFICA-
TION
Check compression using
a compression gauge.
OUT OF
GOOD SPECIFICA-
TION
Check if there are air gap
between TCI unit and fly-
wheel magneto.
OUT OF
GOOD SPECIFICA-
TION
Check the condition of the throttle control
system. Refer to "THROTTLE CONTROL
SYSTEM".
TROUBLESHOOTING
Improperly tight-
ened cylinder head
3-53
ENG
Add.
Clean.
Clean.
• Tighten the carbu-
retor bolts
securely.
• Replace carbure-
tor joint or gasket
with a new one.
Adjust.
Tighten securely.
Adjust.