Yanmar 2QM20 pulley nut

[Kakalina]

Can anyone tell me what size socket is needed to remove the nut on the crankshaft v-pulley on a 2QM20 Yanmar engine?

[cjsfsm]

Originally Posted by Kakalina

Can anyone tell me what size socket is needed to remove the nut on the crankshaft v-pulley on a 2QM20 Yanmar engine?

You will need a 46mm or 1.13/16sae socket. I just used a 1.13/15 with a breaker bar to attempt moving stuck pistons. The sae socket fit well, but the pistons were stuck to hard. You may also find that the 46mm socket is expensive ($30+), but the 1.13/16 can be purchased at a tractor supply for about ten bucks. Hope this helps.

[Kakalina]

Thank you. My boat is 6 hrs away and I just come back for it after trying to remove v-pulley but did not have right socket.
Next time I want to know I have the right socket before I go.

Murray

[cjsfsm]

Ha, been there more than once! Good luck