Suzuki drz 400 2002 Service Manual

CAMSHAFT/AUTOMATIC DECOMPRESSION
ASSEMBLY
I ACAUTION I
Do not attempt to disassemble the camshaft/automatic
decompression assembly. It is not serviceable .
AUTOMATIC DECOMPRESSION
Move Ihe automatic decompression weighl by hand 10 inspect if
it
is operaling smoothly. If the automatic decompression weight
does not operate
smoothly, replace it with a new one.
CAM WEAR
Worn-down cams are often the cause of mistimed valve opera-
tion resulting in reduced power output.
Measure the cam height
<ED using the micrometer. If the cams
are worn
to the service limit, replace the camshaft with new a
one.
EI 09900-20202: Micrometer (25 - 50 mm)
_ Cam height <ED
Service Limit:
IN : 36.190 mm (1.4246 in)
EX : 35.490 mm (1.3972 in)
ENGINE 3-31
H
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Suzuki drz 400 2002 Specifications

General

Displacement	398 cc
Bore x Stroke	90.0 mm x 62.6 mm
Compression Ratio	11.3:1
Cooling System	Liquid-cooled
Fuel System	Mikuni BSR36 carburetor
Starter	Electric
Transmission	5-speed constant mesh
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Front Tire	80/100-21
Seat Height	935 mm (36.8 in)
Ground Clearance	300 mm (11.8 in)
Wheelbase	1, 485 mm (58.5 in)
Dry Weight	119 kg (262 lbs)
Engine Type	4-stroke, single cylinder, DOHC
Ignition	CDI
Front Brakes	Disc
Rear Brakes	Disc
Rear Tire	120/90-18
Fuel Capacity	10.0 L (2.6 US gal)