Suzuki DR350 Service Manual page 135

Complaint
Noisy engine_ Noise seems to come from clutch
Worn splines of countershaft or h u b .
1 .
Worn teeth of clutch plates.
2.
3.
Worn/Damaged clutch release bearing
4.
1 .
Clutc h dampers weakened.
5.
Noise seems to come from crankshaft
Big-end bearings worn and burnt.
2.
Journal bearing worn and burnt.
3.
Thrust clearance too large.
4.
Noise seems to come from transmission
G ea rs worn or rubbing .
1 .
2.
3.
4.
Clutch control out of adjustment or loss of play.
1 .
Slipping clutch .
1 .
Weakened clutch springs.
2.
Worn or distorted pressu re plate.
3.
4.
Clutch control out of adjustment or too much play.
Dragging clutch.
2.
3.
1 .
Transmission will 1 .
not shift. 2.
Worn gearshift paw l .
3.
Transmission will
Gearshift fork shafts are rubbing or sticky.
not shift back. 2.
3.
Worn shiftin g gears on driveshaft or countershaft.
Transmission jumps 1 .
1 .
D istorted or worn gearshift forks.
out of gear. 2.
Weakened cam stopper spring of gearshift cam .
3.
Worn gearshift pawl .
4.
Valve clearance out of adjustment.
Engine idles poorly.
Poor seating of valves.
2.
Defective valve guides.
3.
S pa rk plug gap too wide.
4.
Defective ignition coi l .
5.
D efective pick-up coil or CDI u n it.
6.
Float-chamber fuel level out of adjustment i n caburator.
7.
Clogged jets in carburetor.
8.
Symptom and possible causes
Distorted clutch plates, d rive and drive n .
Rattl ing th rust washer d u e to wear.
Badly worn splines.
Primary gears worn or rubbing.
Badly worn bearings.
D istorted clutch plates, driven and drive.
Some clutch springs weakened while others are not.
D istorted pressure plate or clutch plates.
Broken gearshift cam.
D istorted gearshift forks .
Broken return spring o n gearshift shaft.
D istorted or worn gearshift forks.
S E RVICING I N FORMATION
Remedy
Replace.
Replace.
Replace.
Replace.
Replace the primary driven
gear.
Replace .
Replace.
Replace .
Replace.
Replace.
Replace.
Replace.
Replace.
Adjust.
Replace.
Replace.
Replace.
Adjust.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repair.
Replace.
Replace.
Replace.
Replace .
Replace.
Adjust.
Repair or replace.
Replace.
Adjust or replace.
Replace .
Replace.
Adjust.
Clean or adjust.
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