Suzuki DF 90 Service Manual

PERIODIC MAINTENANCE 2-21
If oil pressure is lower or higher than specification, following
causes may be considered.
(See page 6-65 for oil passage locations)
Low oil pressure
• Clogged oil filter
• Leakage from oil passages
• Defective oil pump
• Defective oil pressure
regulator
• Damage O-ring
• Combination of above items
OIL PRESSURE
Oil pressure (at normal operating temp.) :
550 – 600 kPa (5.5 – 6.0 kg/cm
2
, 78 – 85 psi.)
at 3000 r/min.
NOTE:
The figure shown above is a guideline only, not an absolute
service limit.
High oil pressure
• Using an engine oil of too
high viscosity
• Clogged oil passage
• Clogged oil pressure
regulator
• Combination of above items
TEST PROCEDURE
1. Check engine oil level.
2. Remove bolts and air duct
1 .
3. Loosen screw and disconnect blue lead wire from oil pres-
sure switch 2 .
Remove oil pressure switch.

Suzuki DF 90 Specifications

General

Steering	Remote
Starting System	Electric
Number of Cylinders	4
Trim Method	Power Trim and Tilt
Full Throttle Operating Range	5, 500 - 6, 300 rpm
Fuel System	Multi-point sequential electronic fuel injection
Ignition System	Fully-transistorized
Exhaust	Through Prop Hub Exhaust
Shaft Length	508 mm (20 in), 635 mm (25 in)
Fuel Type	Unleaded gasoline (87 octane or higher)