Lapping and Adjusting Valve Lash Kohler/Onan Flathead Engines

WARNING: WEAR PROPER PPE WHILE DOING THIS! I SUGGEST USING A FACE SHIELD AND LATEX GLOVES!
Engine shown in video is a Onan B48G on a Cub Cadet 1912 (982)
This is my method I’ve used for years. This will work on all Kohler K and M series (K161-M18) and Flathead Onan engines.
Tools used in this video are readily available at most auto parts stores.
YOU MUST REPLACE GASKETS! Kits are readily available online, I got this one for $10!
Valve lash speculations can be found online or in the service manual. There are many free downloadable manuals out there.
Lapping and adjusting valve lash once a year will improve starting and overall performance.
This is my first instructional video, so it is crude and simple. I’m not uploading it to make money, but im trying to help others. Thanks for watching!

[@cylinderhead8047]

Well Done !!! Well described and videoed . I fully intend to do this to mine . This will really bring up cylinder compression too . Thanks

[@JS-kd7jf]

I always used an extending pocket magnet to get the keepers out..try it

[@renalshomlmes338]

Onan says to NOT lap valves because they run two different angles on the valve vs seat. 44 and 45 degrees to give a sharper contact patch. At least on my ccka.

[@user-ic9xw8ni4z]

Did you adjust both sides of the cylinders on TDC or each one have to set separately please let me know because I am trying to set mine an it will not start I don't know if I have to adjust on side on TDC and turn the engine to TDC for the other side please let me know thanks