Yanmar 6LY3 series - Engine Oil Viscosity; Checking Engine Oil; Selection of Marine Gear Oil

BEFORE YOU OPERATE
6LY3 Operation Manual 45
Engine Oil Viscosity
SAE 15W40 is the recommended oil
viscosity.
If you operate your engine outside the SAE
15W40 ambient temperature limits, select
the appropriate engine oil viscosity based
on the ambient temperature and use the
SAE Service Grade Viscosity Chart in
(Figure 2).
Checking Engine Oil
1. Make sure engine is level.
2. Remove dipstick (Figure 3, (3)) and
wipe with clean cloth.
3. Fully reinsert dipstick.
4. Remove dipstick. The oil level should
be between upper (Figure 3, (4)) and
lower (Figure 3, (5)) lines on the
dipstick.
5. Fully reinsert dipstick.
Figure 3
Adding Engine Oil
1. Remove the yellow filler port cap
(Figure 3, (2)) at the top of the rocker
arm cover (Figure 3, (1)), and fill with
engine oil.
2. Fill with oil to the upper limit
(Figure 3, (4)) on the dipstick
(Figure 3, (3)). Insert the dipstick fully
to check the level.
• “Full” (Figure 3, (4)) means the oil
amount at the upper limit on a dipstick.
• “Effective” means the difference
between oil amount at upper limit and
that at lower limit (Figure 3, (5)).
3. Tighten the filler port (Figure 3, (2))
cap securely by hand.
Selection of Marine Gear Oil
Refer to the instruction book for each
marine gear.
0002051
5
1
2
3
4
Engine Lube Oil Capacity
(at rake 0 deg.)
Full: 18.8 L (19.9 quarts)
Effective: 8 L (8.5 quarts)
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