After careful inspection of the intake valve seal, I decided to leave it in place. The rubber was darkened in color compared to the bright reddish-orange of the new one. The rubber was soft and pliable with light pushing from a small screwdriver. The new valve went through the old seal with a little resistance and there was a tight fit around the valve shaft as evidenced by that valve being considerably more difficult rotate during lapping than the exhaust valve. I have the standard, cheap lapping tools with four suction cups of increasing sizes. I could not get the smaller ones to stay stuck at all and the one that was the best size slipped off too easily. I ended up using a magnetic pickup tool to lap both valves. It would have been better if I had been able to lap the intake valve with the seal removed, but the magnetic tool had just enough grip that I was able to do a decent job anyway. I cleaned the carburetor, adjusted the coil gap and it fired right up! It did not blow any smoke and ran normally. Compression was excellent.
Thanks for all the advice for this newbie!!
Thanks for all the advice for this newbie!!
