Engine & Controls
1-75
Your Yamaha outb o ard
features 4 c ycle engine
operation. Unlike 2 cycle
outboards which mix gas
with oil technology, the 4
cycle engine uses crankcase 4
cycle oil to lubricate internal
moving parts. is operation
is similar to automobile engine
technology.
As part of this process, there
is a dipstick placed in the crankcase to o er periodic checking of
engine crankcase oil.
To check the crankcase oil do the following:
1. Ensure the outboard is setting in a at vertical position or the
dipstick may not display an accurate oil level.
2. Remove the crankcase oil dipstick and wipe it clean.
3. Reinstall the crankcase oil dipstick completely into the hole.
Remove it again.
4. e oil level should be between the upper and lower dipstick holes
as needed add the manufacturer’s recommended oil or contact your
closest dealer especially if the oil is contaminated with water which
will show a milky color verses a clear look. Refer to the outboard
manufacturer’s owner’s manual for oil changing maintenance
schedules.
Checking Engine Crankcase Oil
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