Suzuki DF4A Owner's Manual page 26

The oil on the filler cap (dipstick) should be
between the upper and lower limits shown on
the filler cap.
If the oil level indication is near the lower limit,
add enough oil to raise the level to the upper
limit.
NOTE:
If the engine oil is contaminated or discolored,
replace with fresh engine oil. Refer to the
ENGINE OIL section.
To fill the engine oil:
1. Remove the oil filler cap (dipstick) 4 and
wipe oil off with a clean cloth.
2. Fill the recommended engine oil to the upper
level. To check the upper oil level, touch the
filler cap threads onto the filler cap edge as
shown. Do not screw the filler cap.
24
Running the engine with an excessive
amount of oil can damage the engine.
Upper
limit Do not overfill the engine with oil.
3. Tighten the oil filler cap securely.
Lower
limit
• Visually check the propeller to make sure
it is not damaged.
• Make sure the motor is securely mounted
to the transom.
• Make sure the tilt pin is securely installed
in the proper position.
• Make sure the starter rope is free from any
evidence of fraying or wear.
• Make sure you have the boating safety
and emergency equipment on board.
• Make sure that the emergency stop switch
operates properly.
• Make sure the obstacle is not attached to
water intake hole.
Upper
limit
Lower
limit
NOTICE