Small Engines (Lawn Mowers, etc.)/Kohler connecting rod bolts


QUESTION: Hi, I am installing a used connection rod in to a Kohler K301 12hp engine. The manual has two different bolts for the connecting rod. one is a Posi-lock and the other a capscrew. How can I tell which ones I have?
Also it says if using capscrews, to over-torque them by 20% then loosen them and re-torque to the number. Is there a chance I could strip the threads in the connection rod?
Thanks, Robert

ANSWER: Read these URLs:

Page 84

Does the rod have studs already inserted?


---------- FOLLOW-UP ----------

QUESTION: No they have bolts.

Based on the first URL, Capscrew type rod bolts are the ones that screw into the upper part of the rod. Posi-locks have a nut with a stud in the upper part of the rod.

Sound like you have the capscrew type.


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Eric A. Jones


Lawnmower Repair . Certified Master Service Technician from B&S. Have 23 years experience on B&S, Lawn Chief, Weed Eater, Echo, Peerless, Wheel Horse, Snapper, Atlas, MTD, McCulloch, Homelite and many other numerous brands. Specialize in electrical repair.


Born and raised in the midwest. Started tinkering with engines when I was about 14 on my Suzuki RM-80. I began lawn mower repair at a small hardware store. I knew absolutely nothing. I read lots of repair manuals and met an older fellow who taught me many lessons. I continued working on small engines through high school and paid my way through college working on mowers at the same hardware store. Decided to get away from the midwest and mower repair so I joined the Air Force. I repaired air traffic control electronic equipment and ended up in Hawaii where I got a part time job at Small Engine Clinic. I gained a lot of experience from the Small Engine Clinic and had a blast repairing small engines. I then took the Briggs and Stratton Master Service Technician test and earned my MST. I then traveled to Wisconsin where I attended the factory update training seminar and received formal training. Continued working on mowers part time as I completed 20 years of military. Retired from the military on a Friday and continued in the lawn and garden industry the next Monday.

MAS Aerospace Operations BA Mathematics AAS Electronic Communications AAS Electronic Technology

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