MMD Equipment 185S-6C2 - Manual (Page 39)

5.Periodic Inspection/Maintenance
5-6
5.5 Maintenance Items
5.5.1 Change engine oil
[At 50 hours for the first change and at every 250 hours thereafter]

After stopping the engine, wait for 10 to 20 minutes until the
engine oil cools off. Then check the level of the engine oil, or
refill or drain the oil.

Engine oil is very hot and highly pressurized during or just after
the operation. Hot oil could blow out of the tank and can cause
scalding.

Never supply more engine oil than specified level.
excessive supply of engine oil could cause emission of
white smoke from exhaust port, too fast revolution of
engine and it could cause damage to the internal parts of
engine.
① Remove the drain plug“1”attached outside the plane, open a
drain valve“2”inside the plane, and discharge engine oil drain.
② When the oil is completely drained, close a drain valve“2”after
attaching a drain plug “1”, remove the cap of an engine oil filler
port“3”, refill new engine oil.
[Quantity of oil：approx. 2.0gal.(7.4L)]
③ After supplying oil, pull out the oil level gauge“4”and wipe it out.
④ Then, re-insert the oil level gauge“4”fully and pull it out again. If
the dipstick shows the oil level between upper limit and lower
limit, it is normal.
5.5.2 Change engine oil filter
[At 50 hours for the first change and at every 250 hours thereafter]
① Remove the cartridge“1”, using a filter wrench.
② Screw in the new cartridge“1”with the packing“2”coated
slightly with oil. (For part number, see 5.4)
③ After the packing touches the sealing face, further tighten it
by turning it 3/4 times with the filter wrench.
④ After installing the oil filter, check it for any leak during
operation.
A100169
H000049
1
2
Caution in filling or discharging engine oil
H990432
A100369
Oil level gauge
Upper
limit
Lower
limit
1
3
When oil level is within
this zone, it is normal.
4
2
1