Top 20 Kohler CH25 PA-CH730-0040 Command Gasoline Engine Questions & Answers

You will have to hold the flywheel for removing the clutch. It may require removing the blower housing. I use an impact wrench which loosens the bolt w/o holding the flywheel. It's 99% a regular bolt (turn ccw to remove) since left hand threads cost more to buy the bolt and tap the hole and small engine stuff is made as cheaply as possible.

Its only supposed to start in neutral

Does your unit have a low oil kill sensor if it does the unit won't start if the oil is low also if the sensor is bad that will kill the power. I do know if this may be your problem but check the oil level. good luck.

It seems like you have the model number in your question. Clarify what you're looking for and I can help you. Are you looking where to find these numbers on your engine and you just posted some random model number or do you want to know the model number definition, like what letter and number means what?

I believe the ignition timing is fixed on that motor, via a pickup on the crankshaft

Make sure you have good compression. Sounds like you have blow-by. Crankcase vents into the air box.

if it bolts to engine side, looking at it , gas suction in on right ,discharge is on left ,

It may be flooding slightly. You should also always have a fuel stabilizer in the tank. "StaBil" is a good product.

most of the timing on this type of engine requires the alignment of the dots on the cam shafts with the dots on the crankshaft. Only other timing required would be the coil leg gap to the flywheel magnets. Most of these require approx 12 thousand clearance.

now the kohler v-twin does have a bit of a problem with camshafts in this size range , your gonna need to remove valve cover on head side that you suspect is bad , verify that valves move in order (one at a time) as you turn over by hand with spark plugs removed (both sides)

this allmost allwways means a bad head gasket if this happens , and most head gasket failures are from overheated blocks meaning a warped head face but on rare occasions it could allso be a bad valve stem seal

Bad plug, ignition wire, valve clearance, or valve damage, vacuum leak at manifold. Timing cam off / damaged

www.advanced-power-technologies.com Email them, they can email you one

i bet its on a machine that sits outside a lot , if you remove top fan cover i'll further bet you see a build up of fuzzy lint / grass right by ign coil , your coil is being overheated by this "Stuff" and now has gone intermitant , your gonna need to replace it , see my video on youtube on how to do this , i did a video of this a few years back because i got so many requests for this from folks , it is quite easy even my 12 year old son (folowing my method) has done one before with no problems

look down inside air cleaner before starting next time , if theres more than a finger full of motor oil in there then your head gaskets are going

Probably a stuck needle and seat valve. It could also be dirt or varnish in the carb. If so then you will need to take the carb apart and spray it with carb cleaner then wipe it off. I'l bet thet you probably stored it with gas in the tank without any gas stabilier. Good luck, Marty

That sounds VERY much like a faulty automatic choke.

engines that dont run smooth are most allways a problem with fuel , clean/replace all parts in fuel pathway , including the carb

That engine shouldn't have any rectifier.