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E
L
Turn the engine switch to “
6
” (START)
and check the spark plug for spark
strength.
(See “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
away 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.
WARNING
M
Sparks well.
N
Does not spark or weak.
R
Check the following.
9
Fuel cock clogging
9
Air cleaner element
clogging
Clogged
OK
Clean or replace; Consult a Yamaha
dealer.
U
V
Consult a Yamaha dealer.
O
Check the spark plug.
9
Type: BPR4ES
9
Gap: 0.7–0.8 mm (0.028–0.031 in)
P
Incorrect
Q
OK
Replace or
adjust gap.
Clean the spark
plug.
S
T
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