317 Running on One Cylinder

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317 Running on One Cylinder

Gary I have a 317 running on the right cylinder only (symptoms: only RH cylinder gets hot, vibrates like a son of a gun and doesn't have enough power to run the deck and move). Spark is OK to both sides (although it seemed stronger to RH cylinder), compression will be checked later today. Not sure which engine is in it, although since it has an oil filter, I'm assuming it's the Kohler Series II? Or were other engines available (Onan, Kawasaki?)

Is this a common problem? Is there a "real" coil that supplies both cylinders, or one coil per side? Any other ideas?

Some acquaintances recently moved and I volunteered to mow the grass until the house sold. After the third time it threw the deck drive belt, I replaced that. Maintenance was not previous owner's long suit.

hk Very common with Kt17 engine. Check compression on 'cold' cylinder . Suspect con rod problem. may need engine replacement
Gary Update: I have an Onan P281G engine in this 317.

Compression is 120 +/- 5 PSI on both sides (3x). Plug wires both measure ~7K ohms. Spark will jump a .093 gap on test plug (light purple spark color) on both cylinders. Cleaned coil; small crack noted on very bottom of coil plastic.

Replaced both plugs with Autolite 106's; no change. If I pull LH plug wire while running, engine RPM drops ~10% (as measured by seat-of-pants). I'm pretty much down to plug wires, coil, or ignition module (listed in terms of cost from Deere). Any advice on which one to try first?

bontai Joe Interesting that you have an Onan in a 317. Somebody has replaced the original Kohler. As to what to replace? Since you discovered a crack in the coil case, I'd replace that. Plug wire rarely go bad, and the ignition module is pricey.

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