The engine is a 16.5hp (310707) OHV I/C engine from a craftsman rider. I have it tore down and finally scronged up enough parts to attempt to repair it. The problem is my lables fell off of the push rods and I am not sure which one is which. One is a darker color and heavier than the other (I think this was the exhaust rod?). This is my first attempt at a complete rebuild, I do have the B&S service manual but it is not helping with identifing the two :confused: . Any help would be appreciated, Thanks Jim

if I remember correctly, the aluminum one, which is hollow, is the intake, and the steel one, which is solid, is the exhaust.

Wait for someone to say I'm right/wrong though before you try it

Pyro is right :)

Thank you both very much. Jim