tbbahner 27 #1 Posted August 11, 2010 I'm working on a Kohler CC22qs, trying to get it to run a little smoother for a neighbor. Problem 1 - Found oil under air filter. Thought it was blow by- removed plugs - no oil or black carbon - looked to be burning very clean. Don't notice it smoking. Any ideas on where its coming from. Is there a breather clogged or something. 2. Engine surges at half throttle when hot. In the process of checking carb out. Any adjustments on this carb. Didn't notice any with it still on the engine. Know its probably between carb and governor. Any suggestions. As you can tell, never been into this type engine. Messed with a couple BS OHV's. Give me a K series, even a H60 Tech any day. Any suggestions appreciated. Thanks Tom B Share this post Link to post Share on other sites
tbbahner 27 #2 Posted August 11, 2010 Sorry its a horizontal shaft Share this post Link to post Share on other sites
Kelly 1,031 #3 Posted August 12, 2010 Never messed with one of them but check for vacuum leaks, spray a little carb cleaner on all the mounting surfaces to see if it changes the way it runs. Share this post Link to post Share on other sites
bowtieguy 334 #4 Posted August 12, 2010 Suggestion???....do you fish?....might make a good boat anchor!!! :D Share this post Link to post Share on other sites
tbbahner 27 #5 Posted August 12, 2010 Frank, now that's almost cruel. I'm hoping it was just poor maintenance by previous owner. Neighbors only had it a month. Lot of dirt and crap around all the governor, carb linkage. Air filter, pre-filter filthy. Think that might be where the oil was coming from, saturated pre filter. Ran without filters and didn't see any oil surfacing. Will install new plugs, clean up and go from there. Hope I don't have to rebuild carb. Found out the model number is actually CH22QS, tag not very legible any more. Later Share this post Link to post Share on other sites
TT-(Moderator) 1,147 #6 Posted August 12, 2010 The slobber within the air cleaner seems typical of the Command twins - and the B&S Vanguard twins will do it too. It's designed to be a crude (but effective) positive crankcase ventilation system, relying on the vacuum at the carburetor to draw the excess crankcase vapor back into the engine to be burnt. If too many droplets of oil pass completely through the breather instead of returning into the crankcase, they end up on the air cleaner base. You can pull the breather cover (located between the cylinders) and check the reed valve operation and the condition of the condensation "filter", but I doubt you'll find any problems. The carb has a low speed mixture adjustment screw facing in the same direction as the flywheel. You can try turning it a little each direction to see if the engine smooths out. If it tends to stutter at WOT too, you might want to pull the carb apart and blow out the main jet and suction tube. Share this post Link to post Share on other sites
tbbahner 27 #7 Posted August 13, 2010 Great information. Thanks Terry Tom B Share this post Link to post Share on other sites
