Yanmar YDG Series, Operation Manual

Page: 43 / 92

BEFORE YOU OPERATE
YDG Operation Manual 29
34127

Additional technical engine oil
requirements:
The engine oil must be changed when the Total
Base Number (TBN) has been reduced to 2.0. TBN
(mgKOH/g) test method; JIS K-201-5.2-2 (HCI),
ASTM D4739 (HCI).
Engine Oil Viscosity
Select the appropriate engine oil viscosity based on
the ambient temperature using the SAE service
grade viscosity chart in (
Figure 6 ).
Figure 6
Checking Engine Oil
1. Make sure engine is level.
2. Remove oil cap/dipstick (1, Figure 7 ) from
either location and wipe with clean cloth.
NOTICE
Prevent dirt and debris from contaminating the
engine oil. Always clean the oil cap/dipstick and
the surrounding area before you remove the cap.
3. Reinsert oil cap/dipstick into crankcase and
turn clockwise for one-half revolution to engage
the first thread in the crankcase opening.
4. Remove oil cap/dipstick. The oil level should be
between upper (2, Figure 7 ) and lower
(3, Figure 7 ) lines on the oil cap/dipstick.
NOTICE
Always keep the oil level between the upper and
lower lines on the oil cap/dipstick.
5. Fully reinsert oil cap/dipstick (1,
Figure 7
) and
hand-tighten. Over-tightening the oil
cap/dipstick will damage it.
Figure 7
-4°F 14°F 32°F 50°F 68°F 86°F 104°F
(-20°C) (-10°C) (0°C) (10°C) (20°C) (30°C) (40°C)
SAE 10W
SAE 20W
SAE 10W-30
SAE 15W-40
SAE 20
SAE 30
SAE 40
K0000005A00
SAE 20W - 50
122°F
(50°C)
1
4
3
2