rear cylinder plug

[Berlin Bob]

Does anyone know how to plug the hole below the chain tensioner  on the rear cylinder ??   And with what ??   thanks

[Donkey Hotey]

Bob, you made me go look and I came back to say there was no plug. Then I looked at the parts manual and saw a little hole between the fins in the diagram. What the heck is that even for? Is it an oil passage? Why is yours missing a plug?

[Berlin Bob]

Greg...the new cylinders do not have the plug...I contacted Mike Seastrom and he's has found them in his parts !!!!  It is located on the

rear cylinder under the chain tensioner in between the fins ...you'll have to get a mirror and flash lite to find it

[Berlin Bob]

Pic of the plug

[Donkey Hotey]

But what is it plugging? What's behind it? I've never heard of one leaking oil.

[Berlin Bob]

OIL flow

[Berlin Bob]

it is an oil passage that had to be plug  because of the machining so the pump can service  tranny  under the cylinder and upper rear head
as per the oil flow chart