I have what I believe is a model 5233 and the rod/bearing assembly failed. I bought a used D400 engine and after I completed moving all the parts to the new long block assembly I noticed a difference that has me worried.
If you look at the picture, the failed block on the left has a bearing extension to support the shaft almost to the blade. The new engine has a shorter shaft with no bearing extension. The OD of the shaft is the same to theoretically I can put the old shaft in the new block but I wonder whether the engine/shaft will work with the shaft unsupported.
What I am wondering is whether this is how the newer engines were? Or was there a seperate lower bearing that the new engines used. Any comments would be appreciated.
If you look at the picture, the failed block on the left has a bearing extension to support the shaft almost to the blade. The new engine has a shorter shaft with no bearing extension. The OD of the shaft is the same to theoretically I can put the old shaft in the new block but I wonder whether the engine/shaft will work with the shaft unsupported.
What I am wondering is whether this is how the newer engines were? Or was there a seperate lower bearing that the new engines used. Any comments would be appreciated.