TDC marks on a 24 hp. Onan

[joman]

Does any one know exactly where these are located?

[Kbeitz]

The timing marks, should be visible on the front gear cover, (under the blower housing) it should show, 2 major marks, 25 degrees and 20 degrees plus 1 degree lines in between. Those marks/lines should line up to a timing mark on the flywheel itself. (If you rotate the flywheel slowly, you should see a long harsh mark on the flywheel)

[joman]

If I remove the hose that goes to carburetor filter housing and look down thru the hole at the fly wheel should I be able to see it or should I remove alt. Belt and pully then remove shroud over flywheel to see it in order to find Tdc to check valve adjustment?

[sparks]

Here's what I found in the Onan service manual.

[joman]

I found the Tdc mark on the fly wheel and adjusted the valves. Hopefully I did it correctly. The intake valves were good at .005 but the exhaust valves were to tight had to readjust them to .013

[Kbeitz]

They will even get tighter after the engine warms up.
I hope it's working good now.

[joman]

   After adjusting the valves I put on a new carburetor and cleaned the breather valve. The engine started right up and seems to be running pretty good without any smoke.