Yanmar 1GM, Operation Manual

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[9-2.] Lubricating oil system
1) Engine lube oil
1. Engine oil evacuation port
1-a)
Check the oil level before every operation.
1-b)
Replace the oil after 50 hours of operation (for the
first time, after long storage) and every 100 hours of
operation.
Lube oil changes can be performed most effectively
while the engine is still warm. The oil will flow easily
and can be thoroughly drained.
The oil should be drained from the crankcase by
moving the handle of the oil evacuation pump forward
and backward.
2. Oil Evacuation pump (optional)
1-c) Replace the lube oil filter Replace the lube oil filter every 300 hours of operation.
1-c)-1. Unscrew canister by hand or filter replacer tool.
1-c)-2. Check that threaded adaptor is secure in headcasting.
1-c)-3. Discard used canister.
1-c)-4. Coat the top of the seal of the new canister with new
lube oil.
1-c)-5. Screw new canister on to filter headcasting until
canister seal just touches headcasting and then tighten by hand
a further half turn.
1. Used Cannister