Yanmar 6LYA-STP Mode D'emploi page 24

3.2.2 Supplying Engine Lube Oil
1) Remove the filler cap and supply the engine
lube oil.
2) Supply lube oil up to the upper limit on the oil
dipstick. To check the oil level, insert the
dipstick in fully.
Engine Lube Oil Capacity：All 20.0
3) Fasten the filler cap fully.
[ NOTICE ]
Never supply too much lube oil.
If overfilled, oil may come out from the
breather and cause engine trouble.
(oil pan full 16.4 )
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