Small Engines (Lawn Mowers, etc.): Rod Clearance B&S 42A707-1238-01, torque settings, radio repairman

Question
QUESTION: Thanks for your AF service. I enlisted in 66, and became a Ground Radio Repairman. Ret as a Chaplain long story. AF made all the difference in my life.
What is the valve lash on a 42A707 and what is the rod clearance?





ANSWER: Good link on valve service:

http://engines.myfaqcenter.com/Answer.aspx?p_faqid=3441&body_0$tbKeyword=valves

Use the "Engine Check Chart" for valve clearance specification and torque settings.  The "Engine Check Chart" does not have the rod clearance.

Send me the engine type number and I can look up the rod clearance.



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

QUESTION: What is the rod clearance on the B&S 42A707-1238-01, Thanks!

Answer
I've looked all over the Internet and in the Service Reapair manual.  The manual does not have the connecting rod clearance, just has the crank journal reject size.

Most of of the time when overhauling engines the rods are replaced since they contain the "bearing"/bushing.

You might call around your local mower shops and see if they have a 394306 connecting rod in stock and measure the new one to compare to your connecting rod.

Eric