TNOUBLESHOUIilO AUIDE
Outlined belorv are
the
proper prccedures
br diagnosis and conection of
operating
problems
rclated
to
)@ur
Mikuni TMX
Series Carlcuretor
CHECK
FOR:
WERFIOW
'1.
Worn inlet valve
or
dirty inlet valve seat.
2. lmproperluel le\€l in lloat bor{|.
3. Damaged float
bovl o{ing
gaslct.
4.
Loose
float
bor{|.
POOR IDLIl{G
1. ldle speed improperly adlusted.
2. Clogged bypass.
3. Clogged
pilot
iet.
4.
Loose
pilotjet.
5.
Air leaking
into system.
POOR ACCELERAIION
1. Clogged
pilotiel.
2. Fuel level too loil.
HARO STARTII{G
1.
Choke
not operatino
properly.
2. Generälly
djrty carburelor
3. Loose
carburetor
hose clamp.
4. Fuel ffirflw.
POOR PERFORi'AI{CE
'1.
ldle
sp€ed
improperly adiusted.
2. Fuel
overflw
3. Main
iet
loosened.
4. Air leak
in intake system.
5. 0irty or clogged carburetor or air cleanei:
POOR HIGH
SPEED
PERFORMAI{CE
1.
Loose
main
iet.
2. lmpmper fuel le14l in float chambff
3. Dirt lodged in
strainerin
fuel tank
4.
Clogged
main
jet.
ABN0RitAL C0M8USIt0l{
(FUEL
MTXTURE)
1.
Genenlly dirty carburetor
2. Dirty
orclogged tuel line.
3.
Air leakng
into system.
Loss
0F
P0WER
(LEAi{)
1.
Clogged
luel line.
2. Dirtyfuel tank.
3.
Air leaking into
system.
4.
Clogged
fuel filter in luel tank.
5 Genenlly dirty carburetor
toss
0F
P0WER
(RrcHl
'1.
Dirty
air cleaner element.
2. Throttle
cable notworking.
3. Correct
ietting
lor change 0t altitude operation.
4.
Loose
jets.
REMEDY:
'1.
Replace val\€ or clean valve seat.
2. Adjust floattabs for correcl luel lewl.
3. Relace o-ring
4. Tighten.
'1.
Adiust
idle
speeds.
2. Clean.
3. Clean
iet.
4. Tighten
tet.
5
Tighten manilold
and/or
hose
clamps.
1. Clean.
2. Mjust le1ßl of
float
assembly.
1. Clean orreplacaplungeii
2. Disassemble and clean.
3. Tighten.
4. lnspect
lloat
assembly and inlet ulw
end
adjust
or replace.
'1.
Adiust idle.
2. lnsped float assembly and inlet nh€ and
adiust
or replace.
3.
lnspect main
iet
and tighten.
4. Tighten manilold and/or hose
clamps.
5. Clean.
1. lnsped main
iet
and üOhten.
2. Mjust{loat assembly
for
correcl fuel level.
3. Clean straine[
4. Clean.
1. Disassemble
and clean.
2. Clean fuel
line
or replace.
3. Check mOuntir{.qüts or hose clamps l0r tightness.
1. Clean.
2. Clean.
:
3. Check mounting nuts or hose cllnps I0r tightness.
4. Clean fuel filter
5.
Disassemble
and clean.
1.
Clean or
replace
air cleaner element.
2.
Check throttle cable and adjust or
replace.
3. See tuning.
4.
Tighten
jets.
r$
lit:
!i;l
MIKUNI
AMERICAN CORPORATION
Motorcycle
Carbu
retor Division
8910
Mikuni Averiue, Northridge, CA 91324-3496
USA
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