I also put on new spark plugs at that time ,nothing. More delay at low RPMS = easier starting, less delay / more advance at higher RPM = potentially more power. Let us know how you corrected the problem. I called around and I was told that I needed to replace the Speed Advance Module. I'm going to take it off and find out why the power goes through one minute and not the next. $8.95 shipping. Fuel Components Fuel Pump. Your kill wire may be shorted to ground - which would "kill" the spark output from both coils at the same time. It has a 27hp vertical shaft Kohler command engine. Check the spark plug wire for cuts. If the tractor is turning over but has no spark here are a few things to check: First remove the blower housing. I would test the rectifier and recheck the battery. When I installed the new coils I did the SEE test, which is spining the flywheel past the coils to see if a spark is produced. My friend is away at a 93 birthday party for his aunt this weekend but I'll pass this along when he is back. Knowing where to locate needed resources, and applying sound troubleshoo… Considered best of breed by many in the small engine trade, Kohlers are among the most reliable and innovative engines on the market. I then reinstalled the kill switch and tried it again. Not sure if you and your friend have checked the kill relay on the tractor yet.  If you haven't, below will help you check the kill relay. When no spark appeared I rechecked the gap and tried again. 01 - Spark Plug. Have you confirmed it's got a good ground?Â. (don't know about the 518xi ). Something is happening there but am not sure if the one with the yellow wire is working properly. Wish me luck!! Parts lookup for Kohler power equipment is simpler than ever. Filled the tank and now hot there is no spark… The SEAT switch will certainly become a player when the PTO switch is engaged. Battery is good, how do you test the rectifier? The mags are self contained units and only need to "see" the magnet on the flywheel to produce a spark. So, once again I am asking for some guidance here. I am pretty sure he said there was a "black box" with wires leading to the coils.  Could this be a Speed Advance Module?  If so, is there a way to check it as there is still no spark with the new coils installed. I have similar occasional problem like this with my 520xi with a CH20 engine.  The engine dies when I turn on the PTO.  I just jiggle the seat switch and it goes away.  Seems simplistic, but you never know. I've gone over all the information again that you sent me and it seems to come down to the Smart Spark unit or the kill switch relay . After installing everything and letting the fuel pump cycle through to prime the system, the motor will turn over but will NOT start. You must log in or register to reply here. It is the cover at the top of the engine. Kohler ch22 no spark help! I was hoping to get a spark at the plug but that didn't happen. It is a pull start, (turn the key on and pull the recoil rope). Please help I have a Scag sw-48. Are the battery and regulator/rectifier good? In checking for spark, I have no spark at either of the new plug with both of them grounded to the block. good point for killing an already running engine. I am hoping that someone with experience on these units might be able to point us in the right direction for testing the Spark Advance Module and/or figuring out if all the safety switches need to be in place or by-passed in order to make this work. New Kohler 5258401 Ignition Coil Replacement. Back to the schematics to check for sure. Genuine Kohler ASAM Ignition Module Conversion Kit For 22 hp or 23 hp engine spec # 66XXX, 67XXX, 76XXX 24 755 307-S - 24755307-S, Free Shipping, No Tax. Called my friend who is way more mechanical than me.  When he looked at it he said it would be best to get  it into his shop and he would try to work on it between other jobs. So the other day, I was replaced the coupler, rebuilt the carb. I left the kill switch wire (narrow friction clip) off just in case it was shorting out somewhere. The gap is not ajustable by the instructions to the .012 gap with a feeler gage. Regardless, Bob states he has a 99, and he has removed the KILL wires from the mags. last fall I went through it and got it back to operating condition. My next step is find out how the spark advance module is powered. Since all 3 relays are the same I'll switch them to see if I can get a spark. Checked points and they are at .020 no … http://www.kohlerengines.com/manuals/landing.htm. Ending Jan 17 at 9:03AM PST ... (141) 141 product ratings - GENUINE OEM KOHLER PART # 24 584 45-S IGNITION COIL; KOHLER COMMAND ENGINES. The dang spark plug wire that attaches to the end of the spark plug has a metal sheath over it.  find out why the power goes through one minute and not the next. I have a 15 .5 hp kohler single cylinder, verticle engine model CV15S that does not have spark.----- The system seems to have only 2 parts the magnets that bolt onto the flywheel and the coil which goes dirrectly to the spark plug. Interesting. I disconnected the kill switch wire and still no spark. I thought the spark plugs went bad so I bought 2 to replace, but again no spark. Select Engine Series or Model Enter model number to search for the required part specific to your product. I scanned the pages from my Kohler manual for the smart spark, see attached.  Sorry for the page orientation, the manual is a bound book and would only go one way into the scanner. One day it was running just fine and the next day it would turn over like crazy but would not start.  I tried putting a little gas straight intop the carb and still nothing. A reading of "1" indicates complete resistance, or no connectivity. Nothing. I double checked the gap at the mags and the connections that go to them. Have you tested the voltage and continuity going to the coils? Hello - Back again after hearing from my "fix-it" buddy. Tried another coil and condenser still nothing. I recently had a problem with no spark on my Kohler 25hp. I have never experimented with a Toro SAM but the operation theory remains the same. The intermittent  power at the main fuse causes all 3 relays to make a clicking sound. Fuel Filter. 27HP kohler loses spark and then comes back for no reason. Any help would be greatly appreciated. And will require more in depth investigation of their ignition module connections and functions no spark… Common solutions:... 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