Looking for Crank/Rod Replace Advice

[cdanon76]

My Horse has a 7HP Kohler, K161T, spec. 281271J, S/N 10236854. The conn. rod "disintegrated". I've been told to replace the crankshaft as well. I think I've tracked down the right p/n's. Crank is 234815. Rod is either 230039-10 for the .010 oversize rod, or 230039 for the standard rod.

How do I know which rod to order?

I also plan to replace all gaskets and seals. Anything else I should do while its' all torn apart?

Go ahead and help me spend my money as long as I get it right, and she runs good and reliably when done.

Thanks in advance for any advice!

 

[KennyV]

...

How do I know which rod to order?

Did you order the standard size or a reground crank?.. :smile:KennyV

 

[cdanon76]

I haven't ordered any crank yet. All I have is the p/n for it. based on big end diam. numbers and crank pin diam. from here (Kohler K-Series & Magnum - Single Cylinder Engine Specifications, Tolerances | Torque Values and Sequences for Fasteners) it seems like the std rod is correct. If so why is there an oversize option (other than to confuse me).

 

[KennyV]

If you had damaged your crank and had it turned to clean it up... you would then need the oversize rod...
:smile:KennyV

 

[cdanon76]

If crank was turned it would be smaller not larger? wouldn't that necessitate an undersize rod?

Regardless, if I order a new crank, the standard rod should work then, right?

What else should I consider doing while I have it all torn apart?

Appreciate your help!