Suzuki drz 400E Service Manual

2-28 PERIODIC MAINTENANCE
OIL PRESSURE CHECK
Check the engine oil pressure periodically. This will give a good indication of the condition of the moving
parts.
Oil pressure:
Above 40 kPa (0.4 kgf/cm
2
, 5.7 psi)
at 3 000 r/min, oil temp at 60°C
Below 140 kPa (1.4 kgf/cm
2
, 19.9 psi)
Low or high oil pressure can indicate any of the following conditions:
LOW OIL PRESSURE
Clogged oil filter
Oil leakage from the oil passage
Damaged O-ring
Defective oil pump
Combination of the above items
HIGH OIL PRESSURE
Engine oil viscosity is too high
Clogged oil passage
Combination of the above items
OIL PRESSURE TEST PROCEDURE
Connect a tachometer to the high-tension cord.
Remove the main oil gallery plug 1.
Install the oil pressure gauge and adaptor into the main oil
gallery.
Warm up the engine as follows:
Summer: 10 minutes at 2 000 r/min
Winter: 20 minutes at 2 000 r/min
After warming up the engine, increase the engine speed to
3 000 r/min (check the tachometer), and then read the oil pres-
sure gauge.
09915-74510: Oil pressure gauge
09915-70610: Adapter
31

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.)