by oli » Wed Jun 16, 2021 9:23 pm
Kohler Command, 15 hp, ohv, single cylinder, Model# CV15S, Spec# 41594, Serial# 3101606653, C-series, on a John Deere, LT-155 lawn tractor. On cold start up, gas sprays from the muffler, and drips from the muffler shroud located under the engine. At start up, there is light black smoke from the muffler that clears up once engine is throttled up. Engine runs fine at high speed under load, but at idle speed, light black smoke comes from the muffler and the engine start losing RPM's and sounds like it might stall. This engine has a fuel pump. No obvious signs of leaks around carburetor, or fuel pump. Any suggestions as to the problem and repair would be appreciated. Thanks in advance, Oli