Perio
d
ic maintenance an
d
a
d
justment
7-37
7
EAU63470
Trou
b
leshootin
g
charts
Startin
g
pro
b
lems or poor en
g
ine performance
1. Fuel
There is eno
u
gh f
u
el.
There is no f
u
el.
Check the
b
attery.
S
u
pply f
u
el.
The engine t
u
rns o
v
er
q
u
ickly.
The engine t
u
rns o
v
er
slo
w
ly.
The engine does not
start.
Check the
b
attery.
W
ipe off
w
ith a dry
cloth and correct the
spark pl
u
g gaps, or
replace the spark
pl
u
gs.
Check the
b
attery
lead connections, and
ha
v
e a Yamaha dealer
charge the
b
attery if
necessary.
2. Battery
The
b
attery is good.
The engine does not
start.
Check the ignition.
3. Ignition
W
et
Operate the electric
starter.
Dry
There is compression.
There is no
compression.
The engine does not start.
Ha
v
e a Yamaha dealer check the
v
ehicle.
Ha
v
e a Yamaha dealer check the
v
ehicle.
The engine does not
start.
Check the
compression.
Ha
v
e a Yamaha
dealer check the
v
ehicle.
Remo
v
e the spark
pl
u
gs and check
the electrodes.
Operate the electric
starter.
Operate the electric
starter.
Check the f
u
el le
v
el
in the f
u
el tank.
4. Compression
UB9623E0.book Page 37 Tuesday, September 11, 2018 2:09 PM
