AirMan SDG100S-3A2, Instruction Manual

Page: 47 / 76

6. Periodic Inspection/Maintenance
6-5
6.4 First Maintenance at Initial 50 Hours
6.4.1 Change Engine Oil
(At 50 hours for the first change and every 250 hours thereafter)
After stopping the engine, be sure to wait 10 to 20
minutes until the engine oil cools down. Then check the
level of the engine oil, refill or drain the oil.
Engine oil is very hot and highly pressurized during or
just after the operation. Hot oil could blow out and cause
severe injury.
Viscosity of engine oil greatly affects starting, performance, oil consumption, as well as
wear of the moving parts.
Choose an appropriate oil using the table below according to the ambient air temperature.
Relation between viscosity (SAE) and temperature
SAE
Viscosity number
Temperature
10W
−
22
°
F to 50
°
F (
−
30
℃
to 10
℃
)
30 14
°
F to 104
°
F (
−
10
℃
to 40
℃
)
40 32
°
F to 122
°
F (0
℃
to 50
℃
)
15W/40
−
4
°
F to 104
°
F (
−
20
℃
to 40
℃
)
Use CD class engine oil or superior. (Using poor quality engine oil may shorten the life of
the engine.)
When two or more different brands of oil are mixed, engine performance may be
deteriorated. Do not mix oils.
(Procedure)
①
Loosen the drain plug located outside the frame to
drain the oil.
②
After the oil is completely drained, fasten the drain
plug firmly and refill with new engine oil through the
engine oil filler.
③
After the oil is refilled, install the filler cap tightly.
Refilling or draining engine oil
How to choose engine oil
Drain plug
Frame Engine oil filler
(with dipstick)
SDG45S
H990432
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