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New kohler 6.5 hp engine on 27 ton log splitter won't start? Switch on, throttle 1/3 open gas on, has gas. Choke on, which direction?

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After attempting to start, pull the plug quickly and see if it is wet from gasoline. If not, it could be a fuel delivery problem. Start with the hose connection at the carb from the gas tank. Pull it off. Gas? Good. No Gas? Something is plugging up flow out of tank or shut off valve.

Some fuels with alcohol in them cause moisture/
condensation/ oxidation within the aluminum bodies of some small carbuetors inhibiting the flow of gas through the jets. There is a chance the carb needs removed and thorougly cleaned if no gas is passing through the carb to the intake.

Also inspect plug for fouling. Fouling is carbon build up shorting the electrode to ground. Clean thoroughly or replace the plug. Before reinstalling, set the spark gap properly with a feeler gage and then ground the metallic threads on the side of the head and pull the rope start. Watch closely for blu spark jumping the gap. DO NOT touch the plug while doing this, it could SHOCK your SOCKS off !!!! If you have a bright spark, that's good. Install plug and tug the rope and see what happens. If you have no spark, you have an ignition problem.

Are you using summer blend or winter blend gasoline in the engine and what is the outdoor temperature. Gasolines are formulated differently nowadays and a summer blend mixture will wreak havoc on a small engine in the winter time as well as winter blend will do the same in the middle of the summer. We now have oxygenated fuels designed for the high performance engines in the automobiles today and some small engines run extremely 'lean' and as a result some starting issues are created as well.

Posted on Nov 30, 2014


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SOURCE: Have Exmark 52 LazerZ with Kohler ch25 engine.

try looking for a broken wire or a wireing harness shorted to ground, the fuse blowing in the harness will lead you to it if you are able to see where the wire goes. you have a short somewhere may be the fuel pump, too

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SOURCE: 17 hp kohler that is dumping gas out the muffler

carb float sticking open dumping gas into cylinders

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SOURCE: My craftsman mower with a 26 hp kohler dies when choke is in

carb dirty, jets partially plugged, float sticking. Not so uncommon problem and is caused by the fuel left in the carb over the winter gumming up (going bad). You can attempt to clean this on your own if you are somewhat mechanically inclined. Search small engine repair and it will give you a generic breakdown of the parts in a small engine carb. If not the, to have someone overhaul a small engine carb will run you about $120 including parts (at least around VA).

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SOURCE: craftsman riding mower will not start

Same thing happened to me with my 26 horse kohler craftsman. Replaced EVERYTHING (spark plug, fuel filter, oil filter, and degunked the carborator), and still was flooding. It ended up being the flywheel key. Cheap part, quick fix. I guess it can happen when you hit something hard with the deck, or it can just happen without reason... I hit a snowbank hard with my snowblower attachment, but I didn't even realize it until afterwards because it kept running fine. Supposedly, even after the strain to the engine, it won't always stall out. It will keep running (but maybe rougher) until you shut it off. Then when you go to start it again, you will have no luck because all the timing is out of whack. It cost me $80 to have a repair company fix it. I think the part was only $5.

Posted on May 21, 2010

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