Stx 38 12.5 kohler command turns over, has spark and fuel wants to start .Wifes friends mower changed oil, spark plug, fuel filter cleaned carb with carb cleaner.Backfires when trying to start,pulled valve cover valves not stuck and moving.
John, although I rarely see this in a riding mower, the flywheel key may be sheared. Those are the symptoms. Best way to tell would be to pull the flywheel. If it's good, nothing lost but a little time.
Pulled head today no burnt valves. Blows seal off oil filter almost starts no fuel in oil. Kohler cv12.5 supposedly has trouble with coil going bad but this is said to happen when warm and wont start.Tom i will check the flywheel key later.
Did get it started today then got hot and died checked coil and sparkplug no spark checked kohler site how to test bad coil, $53.00 coil from john deer starts right up,runs fine.Oil filter problem deere said 2 qts only 1 1/2.Thanks for the ideas tom not a bad running mower after all.Oil leak was from not enough rtv to seal valve cover from factory.
Got it running clogged new fuel filter,choke was not coming on when first starting was to lean.Neighbor reminded me about when i set his it did same thing. Fuel was the problem,will try to start when cold friday.
I have started re-assembly of a 1974 110 and cannot remember where these springs belong. One has to be the brake return, but I do not remember which or how it was installed. I took pictures and have a service manual. Of course neither show me what I need. Can someone tell me where they belong? Also, this tractor is one of the later ones with electric lift.
Thanks, that helped. I didn't know you could look up specs like that. The larger appears to be the brake return. It's a little longer (1/4 in.) than specs, but has the right number of coils and the diameters are correct.
It may be that they are both brake springs. One spring pulls on the parking brake lever on the dash (located near the frame right side)and the other pulls back on the strap of the peddle brake on the linkage near the drum.
I already have the small one connected for the parking brake. The smaller one of these two is about 4 inches long.
Thanks to k.b.'s suggestion and some time looking through photos and parts diagrams I got the larger one attached at the brake arm above the brake drum and down to the hole at the frame bottom. It works great.
The other one, according to specs, appears to be in the neutral safety switch area. Part number s337m. I found it by looking through diagrams for springs.
That one I still can't figure out. I don't remember one being there and can't see how it would attach.
There is a small spring that hooks around the shifter shaft & connects underneath to keep the shifter tight against neutral switch when your in neutral. It looks similar to your smaller one. If I get a chance I will take a look at my '72 tonight and see if I can check size & mounting points.
No worries. Thank you very much for the reply and the effort. I understand.
I was looking through the service manual this morning for something and looked at the safety switch section. There in front of me was a photo where you can see a spring hooked to the shift lever. I'll figure out where the other end goes.
That should take care of things for now.
Thanks again to you and k.b.. I'll post a picture later.
Got the safety switch spring connected. It looks and feels right. I still can't remember taking it off of there. As an old friend of mine says, "My forgetter works better than my rememberer".
Things are coming back together.
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