Yamaha EF5500EFW Owner's Manual page 52

Except for EF5500EFW
ENGINE DOES NOT START
Turn the engine switch to "7" (ON), then
pull the recoil starter and check if the oil
warning light flickers.
Does not flicker
Pull the recoil starter and check the spark
plug for spark strength.
(See "WARNING")
WARNING
9 To prevent FIRE HAZARDS be sure
fuel is not present in the spark plug
area.
9 To prevent FIRE HAZARDS be sure
to place the spark plug as far way
as possible from the spark plug
hole and carburetor area.
9 To prevent ELECTRIC SHOCK do
not hold spark plug lead with hand
while testing.
OK
Check the following.
9 Fuel line clogging
9 Air filter element clogging
791-001e
Flickers
Does not spark
Clogged
OK
– 45 –
Check engine oil level.
OK
Consult a
Yamaha dealer.
Check the spark plug.
9 Type: BPR4ES (NGK)
9 Gap: 0.7–0.8 mm (0.028–0.031 in)
Incorrect
Replace or
adjust gap.
Clean or
replace.
Engine does not start.
Consult a Yamaha dealer.
Level low
Add engine oil.
OK
Clean the spark
plug.
OK