• Damaged pipe
•
Imp
roperly connected pipe
Fuel
system
1. Throttle body (
-i
es)
• Damaged or loose throttle body
jo
int
2. Air filter
• Clogged air filter element
Chassis
1. Brake(s)
• Dragging brake
Electrical
system
1. Spark plug(s)
• Incorrect spark plug gap
• Incorrect spark plug heat range
2. Ignition system
• Faulty ECU
EA.~10
OVERCOOLING
Cooling
system
1. Thermostat
• Thermostat stays open
, . .,_
POOR
BRAKING
PERFORMANCE
• Worn brake pad
• Worn brake di
sc
• Air
in
hydraulic brake system
• Leaking brake fluid
• Faulty brake
ca
liper kit
• Faulty brake
ca
liper seal
• Loose union bolt
• Damaged
br
ake hose
• Oil
or
grease on the brake disc
• Oil or grease on the brake pad
• Incorrect brake fluid level
, . .,_
FAULTY FRONT
FORK
LEGS
Leaking
oil
• Bent, damaged
or
rusty inner tube
• Cracked
or
damaged
ou
ter tube
• Improperly installed o
il
seal
• Damaged o
il
seal
li
p
• Incorrect oil level (high)
• Loose damper rod assembly bolt
• Damaged damper rod assembly bolt copper
washer
• Cracked
or
damaged
cap
bolt 0 -
ri
ng
Malfunction
• Bent
or
damaged inner tube
• Bent
or
damaged outer tube
• Damaged fork spring
• Worn
or
damaged outer tube bushing
• Bent
or
damaged damper rod
9-3
TROUBLESHOOTING
• Incorrect oil viscosity
• Incorrect o
il
level
......,.
UNSTABLE
HANDLING
1.
Handlebar
• Bent
or
improper
ly
insta
ll
ed handlebar
2.
Steering head components
• Improperly installed upper brack
et
• Improperly installed lower bracket
(improperly tightened ring nu
t)
• Bent steering stem
• Damaged ball bear
in
g or bearing race
3. Front fork leg(s)
• Uneven o
il
levels (both front fork legs)
• Unevenly tensioned fork spring (both front
fork legs)
• Broken fork spring
• Bent or
da
maged inner tube
• Bent or
da
maged outer tube
4.
Sw
ingarrn
• Worn bearing
or
bushing
• Bent
or
damaged swinga
rm
5.
Rear shock absorber assembly(-ie
s)
• Faulty rear shock absorber spr
in
g
• Leaking oil
or
gas
6.
Tire(s)
• Uneven tire pressures (front and rear)
• Incorrect ti
re
pressure
• Uneven tire wear
7.
Wheel(s)
• Incorre
ct
wheel balance
• Deformed c
as
t wheel
• Damaged wheel bearing
• Bent
or
loose wheel
ax
le
• Excessi
ve
wheel runout
8. Frame
•B
ent frame
• Damaged steering head pipe
• Improperly installed bearing race
,,.,.,,,
FAUL
TY LIGHTING OR SIGNALING SYSTEM
Headligh
t
does
not
come
on
• Wrong headlight bulb
• Too many electrical accessori
es
• Hard chargi
ng
• Incorrect connection
• Improperly grounded circuit
• Po
or
contacts (ma
in
or
li
ght switch)
• Burnt-out headlight bulb
Headlight
bulb
burnt
out
• Wrong headlight bulb
• Faulty battery
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