Did some wrenching on the ol' K241 today in the 107, fixed a bunch of stuff. I know it's Christmas Eve but why the heck not?
So I pulled the valve cover off. Valve clearances were a bit too tight. Exhaust was like .009, and intake was probably .003 or something else absurd. Got those adjusted back to the proper measurements, .018 on the exhaust and .009 on the intake.
When putting it all back together I noticed that my reed valve was not functioning properly. I'm not sure if it's supposed to be, but the valve is sprung slightly in one direction. It was on there backwards, and it did not seal the 2 holes in the plate properly. You could see that it was at some time installed correctly as there were wear marks on both sides of the valve. I installed it properly and now it seals properly.
Also replaced the fiber filter thingy because it was pretty small.
Overall I'd say it was a pretty good day
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'70 107 with k301 engine swap
'71 106 with 38" deck
'70 147
R with factory replacement k321, 42" deck
'61 Original with 38" timed deck
'63 70 "pinkie"
1863 with 54" deck
'46 Farmall H, '50 Farmall Cub
105 x2 (parts)