Suzuki drz 400E Service Manual

SERVICING INFORMATION 8-3
Complaint Symptom and possible causes Remedy
Engine is noisy. Excessive valve chatter
1. Excessive tappet clearance.
2. Weak or broken valve spring.
3. Worn camshaft.
4. Worn or burnt camshaft journal.
Noise seems to come from the piston
1. Worn piston.
2. Worn cylinder.
3. Carbon buildup in combustion chamber.
4. Worn piston pin or piston pin bore.
5. Worn piston ring or ring groove.
Noise seems to come from the cam chain
1. Stretched cam chain.
2. Worn cam chain sprocket.
3. Improperly working cam chain tensioner.
Noise seems to come from the clutch
1. Worn countershaft spline.
2. Worn clutch hub spline.
3. Worn clutch plate teeth.
4. Distorted clutch plate.
5. Weak clutch damper.
6. Weak clutch spring.
Noise seems to come from the crankshaft
1. Rattling bearing.
2. Worn or burnt crank pin bearing.
3. Worn or burnt journal bearing.
4. Excessive thrust clearance.
Noise seems to come from the transmission
1. Worn or rubbing gear.
2. Worn countershaft spline.
3. Worn driveshaft spline.
4. Worn or rubbing primary gear.
5. Worn bearing.
Adjust.
Replace.
Replace.
Replace.
Replace.
Replace.
Clean.
Replace.
Replace.
Replace cam chain and
sprockets.
Replace cam chain and
sprockets.
Repair or replace.
Replace countershaft.
Replace clutch hub.
Replace clutch plate.
Replace.
Replace primary driven gear.
Replace.
Replace.
Replace.
Replace.
Replace thrust bearing.
Replace.
Replace countershaft.
Replace driveshaft.
Replace.
Replace.
Clutch slips. 1. Clutch cable out of adjustment.
2. Weak or broken clutch spring.
3. Worn or distorted clutch pressure plate.
4. Distorted clutch plate.
Adjust.
Replace.
Replace.
Replace.
Clutch drags. 1. Clutch out of adjustment.
2. Some clutch springs are weak, while others are not.
3. Worn or distorted clutch pressure plate.
4. Distorted clutch plate.
Adjust.
Replace.
Replace.
Replace.
Transmission will not
shift.
1. Broken gearshift cam.
2. Distorted gearshift fork.
3. Worn gearshift pawl.
Replace.
Replace.
Replace.
Transmission will not
shift back.
1. Broken gearshift shaft return spring.
2. Rubbing or stuck gearshift shaft.
3. Worn or distorted gearshift fork.
Replace.
Repair or replace.
Replace.

Suzuki drz 400E Specifications

General

Displacement	398 cc
Compression Ratio	12.2:1
Ignition	Electronic ignition (CDI)
Transmission	5-speed constant mesh
Rear Suspension	Link type, coil spring, oil damped
Front Tire	80/100-21
Rear Tire	110/100-18
Engine Type	4-stroke, DOHC
Bore x Stroke	90.0 mm x 62.6 mm
Fuel System	Mikuni BSR36 carburetor
Front Brakes	Disc
Rear Brakes	Disc
Fuel Tank Capacity	10.0 L (2.6 US gallons)
Overall Width	825mm (32.5 inches)
Ground Clearance	315 mm (12.4 in)
Seat Height	935 mm (36.8 in.)
Curb Weight	138 kg (304 lbs)
Dry Weight	119 kg (262 lbs.)