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Posted by E. Walter Le Roy on March 19, 2006, 5:07 pm
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Most engine repair facilities can bore and install a valve seat insert.
Walt
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>> My 12 hp. kohler was burning almost as much oil as gas :(
>>
>> So, I orderred a rebuild kit. Included is a new set a valves. When I
>> pulled the old valves, I see a burnt spot on the casting where the valve
>> sealed. How should I machine this out? I've heard of putting lapping
>> compound under the old valve and twisting. Seems like this might take
>> forever.
>>
>> Any suggestions?
>>
>> Karl
>>
>>
>>
> i would suggest putting an angle stone in a hand drill and cuttin the
> valve seat to remove the bad spot...if it is not too deep.Then lap in the
> NEW valve with lapping compound.
>
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>
> So, I orderred a rebuild kit. Included is a new set a valves. When I
> pulled the old valves, I see a burnt spot on the casting where the valve
> sealed. How should I machine this out? I've heard of putting lapping
> compound under the old valve and twisting. Seems like this might take
> forever.
>
> Any suggestions?
>
> Karl
>
>
>