Perio
d
ic maintenance an
d
a
d
justment
7-31
7
EAU66360
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 ignition.
S
u
pply f
u
el.
The engine does not
start.
Check the ignition.
Open the throttle
half
w
ay and operate
the kickstarter.
W
ipe off
w
ith a dry
cloth and correct the
spark pl
u
g gap, or
replace the spark
pl
u
g.
2. Ignition
W
et
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
g and check
the electrodes.
Operate the
kickstarter.
Check the f
u
el le
v
el
in the f
u
el tank.
3. Compression
UBR880E0.book Page 31 Friday, February 16, 2018 8:32 AM
