Valve Spring Tip. Compress it in a vice and use 2 small zip ties to keep it compressed. After installing the valve retainer cut and remove the zip ties.

I was always leery about working on small engines,but videos like yours make it very interesting and enticing to try myself. People like you help to take out the mystery of repair. Super video,thanks.

Thank you very much for this detailed video! your follower from now on! Thank you very much Compadre !!!

Cut part of the lawn with my Grand Pappy's lawn mower while it progressively smoked till it quit running. Reckon I have same problem with valves and maybe head gasket. Now need the courage to grind less than a short hair the offending valve stems. Thanks chief for the tutorial this my save me some😃

I loved the video, but did have a lol when you said put a new spark plug in, that plug wasn't new . But loved the video, please make more on lawnmowers regards colin from croydon surrey England 👍 👏 👏 👏 👏

Thank you ! I subbed because of this video.

gr8 vid, I have a quantum Flat head, I think with similar issues. it doesn't smoke but when it gets hot it seems to loose compression until it cools off. I have taken off the head to check the valves and cylinder wall, maybe need a valve job. Cylinder wall looks fine and smooth

fantastic video, very informative,

Well done, Jim.

Hi Jim. I think I have a valve problem too. Burning oil so white smoke. I am in the process of disassembling to check following your video. Will let you know how it goes. Thank you for this great video!!!

excellent video thank you

If you bake the head gasket in the oven from cold to max temp, it makes it close to new - it's like annealing. True. It works.

I had the same problem. the Valve came off the spring . Put it back together but now the mower smokes ? Also the Head gasket is gone . Do you think it would be the reason its smoking white smoke ? Thanks for your Video !

Looks to me like either the cranks bent or the blade with how bad it vibrating.

It look like the mower needed a lot of other things serviced , was other servicing done on this mower it was not talked about in the video .

VERY GOOD VIDEO

A much more acceptable and professional job would involve determining and setting the valve lash (clearance) to specifications; however, this method will probably be adequate (and certainly was "quick and dirty.")

subbedddd!!!!!!!

How's that mower doing today? Still have it?

Smart idea

Green ones are good

ok....did exactly what you did and white smoke is still a flying. ;(

You Need A Valvespring Compresser

Flathead engines were more reliable, that’s why they don’t make them anymore.

I can't believe this guy worked on an engine like that without blowing all the dirt and cobwebs off of it first. Filthy fucking motor is just asking to get dirt inside it while you're working on it. WTF is wrong with people?!