Cc 104 cranks but won't start

[mgonitzke]

Might as well lap the valves while you have the head off, as well. Otherwise, you may find yourself taking the head off again later when you find out the valves aren't sealing.

 

[James McCafferty]

I found out the head is not flat. It rocks a little on a flat surface. The recommended repair i understand would be machining it with a fly cutter. Anyone have any luck manually sanding the head on a piece of sand paper glued to a piece of glass? When is the head beyond repair?

 

[mgonitzke]

Lots of us have flattened a head with a thick piece of glass and wet/dry sandpaper. If it's really bad, I'd start with 120 grit and finish with 220. Use some water, as it makes the sandpaper last a lot longer. I don't recall ever seeing one that was warped so bad that it could not be fixed, but I suppose it is possible.

 

[gary noblit]

If you're not comfortable with doing it by hand find a local machine shop that will mill or grind a few thousands off....(very few)

 

[dschwandt]

Should not be a problem once the head is indicated and secured in a vice or to the table.
I have several heads that are ruined from blown gaskets and hope to try my hand at that one of these days.

 

[mfrade]

I did an angle cut on my 169, Took .020 thou off the worse side and .006 thou off the "good" side. The motor doesn't know it.

 

[gary noblit]

I'm curious..on a mill or surface grinder???

 

[mfrade]

I'm curious..on a mill or surface grinder???

Fly cut on a mill. Mounted in a sine plate.

 

[James McCafferty]

Sorry this update has been a long time coming. I actually found the missing head bolt laying on the frame but I have no idea why it was taken out. The good news is that after cleaning everything up and grinding the head the engine fires up really well. I even added a little fresh paint to some of the parts I took off. I was not able to do a compression check on it. I have a tester but I think I would need to do a leak down test?? because of the compression relief?? Maybe someone has some pointers on that.
Next project is to add a 2'' ball hitch higher up on the back so that I can move my empty utility trailer. Has anyone done this before to a 104?

 

[kmcconaughey]

Here's some info from the IH Kohler Service Manual: