Yamaha EF4500iSE Theory & Diagnostics Manual page 64

7VV10-06 02.10.4 10:41 AM
Yamaha Generator Theory & Diagnostics Guide
ENGINE STARTS BUT STALLS
Check fuel level.
SUFFI-
CIENT
Check if fuel cock is
clogged.
GOOD
Check if fuel hose is
clogged.
GOOD
9 Check if
retaining
loose.
9 Check if there is air
suction due to a dam-
aged carburetor joint or
gasket.
GOOD
Measure valve clear-
ance.
GOOD
Check
using
gauge.
GOOD
Check air gap.
GOOD
Check the condition of the throttle control sys-
tem. Refer to "THROTTLE CONTROL SYS-
TEM" in Model's Service Manual.
TEM".
Page 3
INSUFFI-
CIENT
NO GOOD
NO GOOD
carburetor
nuts are
NO GOOD
OUT OF
SPECIFICATION
compression
compression
OUT OF
SPECIFICATION
NO GOOD
Check piston, piston ring and cylinder.
GOOD
2-30
6-3
TRBL
ENGINE
NO GOOD
Add.
Clean.
Clean.
9 Tighten the
carburetor
bolts
securely.
9 R e p l a c e
carburetor
joint or gas-
ket with a
new one.
Adjust.
Replace.
Replace.