R-21 3ym30 oil drain plug size

[jzois]

Can anyone tell me the size of the oil drain plug in the 3ym30 R-21. Once post had a link to Fumotousa.com for a drain valve. They listed several Yanmar applications but not the 3ym30. Rep responded and ststed he can supply the valve if I can provide the size. Any help? :?:

JZ

 

[Pearl]

I am not sure of the plug size. Yanmar describes changing the oil on the 3ym30 by cleaning the dipstick and the surrounding area, remove the dipstick and the engine oil fill cap for easier draining, and finally to pump the oil out. I use a Marpac Fluid Extractor from Defender. Just another option to changing oil on the 3ym30.

http://www.defender.com/product3.jsp?pa ... id=1345777