8-66
8
EBU27696
Troubleshooting charts
Starting problems or poor engine performance
Check the f
u
el le
v
el in
the f
u
el tank.
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 does not start.
Check the
b
attery.
Operate the electric starter.
4. Compression
There is compression.
There is no compression.
The engine does not start.
Ha
v
e a Yamaha dealer check the ATV.
Remo
v
e the spark pl
u
g
and check the electrodes.
3. Ignition
W
ipe off
w
ith a dry cloth and correct the
spark pl
u
g gap, or replace the spark pl
u
g.
Ha
v
e a Yamaha dealer check the ATV.
The engine does not start.
Check the compression.
Dry
W
et
Operate the electric starter.
Ha
v
e a Yamaha dealer check the ATV.
The engine does not start.
Check the ignition.
Operate the electric starter.
2. Battery
The engine t
u
rns o
v
er
qu
ickly.
The engine t
u
rns o
v
er
slo
w
ly.
The
b
attery is good.
Check the
b
attery lead connections,
and ha
v
e a Yamaha dealer charge
the
b
attery if necessary.
UBB511E0.book Page 66 Monday, March 5, 2018 3:26 PM
