Suzuki RG250 Service Manual page 181

SERVICING INFORMATION 6·2
Complaint Symptom and possible causes Remedy
Transmission
1. Worn sh ifting gears on drive shaft or countershaft. Replace.
jumps out of gear. 2. Distorted or worn gearshift forks. Replace.
3. Weakened stopper spring on gearshift stopper. Replace.
Engine idles 1. Spark plug gaps too wide. Adjust.
poorly. 2. Defective ignition coil. Replace.
3. Defective pick-up coil, exciter coil, pulser coil or Replace.
COl unit.
4.
Float-chamber fuel level out of adiustment in
Replace.
-
carburetOl's.
5. Clogged jets or imbalance of c,arburetors. Clean or adjust
Engine runs 1.
Spark plug gaps too narrow. Adjust.
poorly in high-
2. Clogged jets or imbalance of carburetors. Clean or adjust.
speed range. 3. Defective ignition coil. Replace.
4.
Defective pick·up coil, exciter coil, pulser coil or Replace.
CDI unit.
5. Float·chamber fuel level too low. Adjust.
6. Clogged air cleaner element. Clean.
7. Clogged fuel pipe, resulting in inadequate fuel Clean, and prime.
supply to carburetors.
8. Defective exhaust valve control unit, actuator or Replace.
exhaust valve.
Dirty or heavy 1.
Oil pump out of adjustment. Adjust.
exhaust smoke. 2. Damage or worn crankshaft oil seal. Replace.
Engine lacks
1. Worn piston rings or cylinders.
Replace.
power.
2. Poor seating of valves.
Repair.
3. Spark plug gaps incorrect.
Adjust or replace.
4. Clogged jets in carburetors.
Clean.
5. Float·chamber fue l level out of adjustment.
Adjust.
6.
Clogged air cleaner element.
Clean.
7. Sucking air from intake pipe.
Retighten or replace.
8. Too much engine oil in the engine.
Drain out excess oil.
9. Defective exhaust valve control unit, actuator or
Replace.
exhaust valve .
Engine overheats. 1.
Heavy carbon deposit on piston crowns.
Clean.
2. Not enough oil in the engine.
Add oil.
I
3. Defective oil pump or clogged oil circuit.
Replace or clean.
4. Fuel level too low in float chambers.
Adjust.
5. Suck air from intake pipes.
Retighten or replace.
6.
Use incorrect engine oil.
Change.
7. Defective cooling system.
See rad iator section.