Carburetor Troubleshooting; Radiator Troubleshooting - Suzuki RG250 Service Manual

8-3 SERVICING INFORMATION
CARBURETOR
Complaint Symptom and possible causes
Remedy
Trouble w ith 1- Starter jet is clogged.
Clean.
starting. 2. Starter pipe is clogged. Clean.
3. Air leaking from a joint between starter body and Check starter body and carburetor
carburetor. for tightness, adjust and replace
gasket.
4_
Air leaking from carburetor's joint or oil pump Check and retighten.
adjusting hole screw.
,-
5. Starter plunger is not operating property. Check and adjust.
Idling or low-speed
1-
Pilot jet. is clogged or loose.
Check and clean.
trouble.
2_
Air leaking from carburetor 's joint, oil pump
Check and adju st.
adjusting hole screws, or starter.
3_
Pilot outlet is clogged,
Check and clean.
4_
Starter plunger is not fully closed. Check and adjust.
-
,
Medium· or high· 1-
Main jet is clogged.
Check and clean.
speed trouble. 2. Needle jet is clogged. Check and clean.
3. Throttle valve is not operating properly.
Check th rottle valve for operation.
4_
Air cleaner element is clogged.
Check and clean.
Overflow and fuel 1. Needle valve is worn or damaged.
Replace.
level functu ations.
2. Spring in need le valve is broken. Replace.
3. Float is not working properly. Check and adj ust.
I
4.
Foreign matter has adhered to needle valve. Clean.
5_
Fuel level is too high or low. Adjust float height.
6 . Clogged carburetor air vent pipe . Clean.
RADIATOR
Symptom
Probable cause
Remedy
Engine overheats.
'- Not enough cooling water. Add.
2.
Radiator core is clogged with dirt or trashes. Clean.
3. Erratic thermostat, stuck in closed position. Replace.
4. Clogged water passage. Clean.
5_ Air trapped in the
cooling circuit. Bleed out air.
6.
Defective water pump. Replace.
,_
Use incorrect cooling water. Change.
Eni!ne
ove rcoo:~ .
1-
Erratic thermostat, stuck in full·open posi tion. Replace.
2_
Extremely cold weather. Put on the radiator cover.