Oil & Fuel Tachometer/Oil leak

[Farmer14706]

I have a 1961 MF35 that has the tachometer cable connected to a cover on the back of the engine, with the cover held by three bolts. When I'm climbing a steep grade, there is a small hole in the cover that allows engine oil to come out. Since I use the tractor for skidding log on our hills, I'm getting a lot of oil out of the hole. There is also a small groove in the cover the matches a small hole in the engine block, but doesn't seem to do anything. I'd like to plug the small hole in the cover to prevent oil from coming out, will that cause a problem?

Thanks

 

[davesl708]

Hi. Welcome.

Could the cable be worn out allowing oil to leak.
As to the hole in the cover is it a vent hole?

Maybe a picture will help seeing what you see.