Tecumseh HS50 oversized Intake Valve

markus

Well-Known Member
#9
I'm assuming i would need to re-cut the seat to use this?
Thanks

Yes the seat needs recut. Its only the shaft that's oversize, to repair worn guides since they are not replaceable (as per Tecumseh). Due to cutting the guide you HAVE to recut the valve seat to ensure that it centers still and seats. Tecumseh recommended a 3 angle (60 degree to start) cut to best re-align. Its not too bad of a job to do, The H 25-35's that are mini bike era have been the ones that seem to need it the most for the intake side out of ones I rebuild for some reason. The HS's with this larger diameter valve and seat opening not as much for the intakes, but still have do one here and there.
 
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