K301 undersized rod - Only Cub Cadets

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K301 undersized rod

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07-29-2012, 01:43 AM

Alvy

Grand Member

Join Date: Jul 2012

Location: Winter Haven, FL

Posts: 3,567

K301 undersized rod

Hello all.

I have started the tear down of my K301 due to a loud knock in the engine under any kind of load. Previous owner installed new piston/rod for unknown reason but I think I'm finding out why. I found knock to be excessive play in rod to crank clearance and looks like stock rod was used. Measuring rod journal on crank is 1.489 at the smallest dimension/slight damage to journal in small area and minimum wear spec I have found is 1.499 so I'm wondering what my options are? I've read that a .010 undersized rod is available but it seems I'm already at .010 under wear spec. so will getting the undersized rod work? I've also seen that there is a .020" under rod available in rebuild kits on Flea bay that's extra on top of the cost of the kit but this seems like it might work as well. I cant find a new or used crank so mine will have to be repaired I guess or left as is and hope the undersized rod (s) will work? I'm assuming that I should take the crank out and bring it to my local machine shop to see what they have to grind it down to? I don't have much experience in this so any advice would be appreciated.

Thanks

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