Suzuki DF 25, Service Manual, Page: 24 / 148

PERIODIC MAINTENANCE 2-3
MAINTENANCE AND TUNE-UP PROCEDURES
This section describes the servicing procedures for each of the
periodic maintenance requirements.
ENGINE OIL
ENGINE OIL LEVEL CHECK
1. Place the motor in a vertical position.
2. Check the oil level through the oil level inspection window
1
. The oil should be between the upper and lower limits.
If the level is low, add the recommended oil to the upper limit.
Recommended oil:
• 4 stroke motor oil
• API classification
SE, SF, SG, SH, SJ
• Viscosity rating SAE 10W-40
Perform the following steps in order to add the oil to the upper
limit:
3. Remove the motor cover.
4. Remove the oil filler cap
2
.
5. Add the recommended engine oil until the oil level reaches
the upper limit.

6. Tighten the oil filler cap securely.
Inspect the oil level before every use.
Upper limit
Lower limit
Do not overfill, as excessive oil can damage the
engine.
Upper limit
Lower limit