107 timing issues

[jkier]

Hey all,
Finally getting around to working on a 107 I picked up a while back.
Didn't really need the tractor but wanted the tiller on it and the PO wouldn't separate them.

Anyhoo,
I was told it ran when i picked it up but was also told it smoked badly.
I've replaced the head gasket, De-carbonized and flattened the head. Checked the piston and valves, she was bored out already but looked decent.

Re wired the entire thing, rebuilt the carb, new points and condenser.

She fires and runs really rough, it seems as though I don't have enough adjustment in the points. She knocks pretty good until i close the gap to the point where they barely open.

The static timing method from Matt G. was pretty much how I got it running just can't get it smoothed out.

I don't have a lot of experience with single cylinder breaker point engines.
Any pointers or other things to check before i tear this engine down?

Here's some pictures just cause everyone likes pictures.
You can see the haze from the 107 sputtering along..

[ACecil]

I'm not much help, but you have some good looking cubs!

[jkier]

Thanks ACecil,
Those are the ones the wife knows about..

[cubs-n-bxrs]

jkier try replacing the point push pin. I had the same problem with a 102 that I used to own. I didn't have enough adjustment in the points. Put in the new pin and problem was solved.

[jkier]

Originally Posted by cubs-n-bxrs

jkier try replacing the point push pin. I had the same problem with a 102 that I used to own. I didn't have enough adjustment in the points. Put in the new pin and problem was solved.

Cubs,
Thanks!
do you know what the length should be on those?

[cubs-n-bxrs]

Lets put it this way I had that information wrote down somewhere and it escapes me at the moment. I was going to try and make a couple for myself as spares.

[jkier]

No problem,
My local CC dealer has a replacement.

I'll post the length after i pick it up.


Thanks again!

[jkier]

If anyone's interested Kohler's part # 47 411 04-S Point Rod
Measures 1.552" with a decent pair of dial calipers

Interestingly my Cub dealer informed me the old rods were part aluminum and part steel and would mushroom on one end causing this timing problem.

I'm keeping my fingers crossed that's whats happened

[fixerlr]

I had the same problem replaced the pin and made a world of diffrence

[johncub7172]

Maybe if you cant pull the pushpin out by hand there is a problem? My k161 pulled out by hand fine, but my k241 I could not. But I didnot have the same problem with the k241 as you have. thanks.