Is there a way that I can verify if the engine mount spacer with the 2 o-rings is actually fitted on my assembled engine? (Part 31 & 32)
My concern is due to the fact that I have one in my loose parts bin, and I don’t know where it came from. However, my DT175B that I am working on now seems to have had a severe oil leak as you can see in the photo of the engine cradle. I am worried that I may have acquired this roque engine mount spacer in the box of loose parts that came with this DT175B. So again, is there a way I can verify if it is in place or if it is missing on my engine without splitting the cases?


 

Possibly feel with a bent wire or pick in through the mount hole.  If missing there will be a big "step" once you get though mount. 

If there, there will be little to no step as ID of spacer bushing is very close to ID of mounts. 

Why didn’t I think of that….   Thanks MarkT. 

I have a feeling I am going to learn more about splitting cases, because I can think of no other explanation as to why I have this spacer in my bin of loose bits and pieces. The previous owner never mentioned opening up this engine, but that doesn’t mean someone else before him didn’t. I was hoping the oil was coming from a bad seal on the output shaft, but as you can see in this photo, things look as though it could be leaking up higher….

Spacer doesn't seal oil...  o-rings are there to keep spacer centered, not to seal.

There were racing versions with solid mounts that didn't need or use the spacer. 



 

Looks like 50 yr old dried mud coated with chain lube (oil) to me previous owner could have used oil not lube I remember some people would use STP for their bike chains

Ha. I just don’t stop learning from you guys on this forum. How quickly I assumed the o-rings were for oil seals. Thanks again!