Troubleshooting
When troubles occur, be sure to check the simple causes which, at first, may seem too obvious to be considered.
For example, a starting problem could be caused by an empty fuel tank. Some common causes of engine troubles
are listed in the table below.
Do not attempt to service or replace major engine components, or any items that require special timing or
adjustment procedures. Have this work done by a Kohler Engine Service Center.
Problem
No.
Fuel
Will.Not.Start
Hard.Starting
Stops.Suddenly
Lacks.Power
Operates.Erratically
Knocks.or.Pings
Skips or Misfires
Backfires
Overheats
High.Fuel.
Consumption
Storage
If the engine will be out of service for two months or
more, use the following storage procedure:
1. Clean the exterior surfaces of the engine.
2. Change the oil while the engine is still warm from
operation. Refer to Change Oil.
3. The fuel system must be completely emptied,
or the gasoline must be treated with a stabilizer
to prevent deterioration. If you choose to
use a stabilizer, follow the manufacturers
recommendations, and add the correct amount
for the capacity of the fuel system. Fill the fuel
tank with clean, fresh gasoline. Run the engine
for 5 minutes to get stabilized fuel into the
carburetor.
To empty the system, run the engine until the
tank and system are empty.
4. Remove the spark plug. Add one tablespoon of
engine oil into the spark plug hole. Install the
plug, but do not connect the plug lead. Crank the
engine two or three revolutions.
18
Improper.
Dirt.In.
Fuel
Fuel.Line
Debris.Screen
Possible Cause
Dirty.
Incorrect.
Oil.Level
Overloaded
5. Remove the spark plug. Cover the spark plug
hole with your thumb, and turn the engine over
until the piston is at the top of its stroke. (Pressure
against the thumb is greatest.) Reinstall the plug,
but do not connect the plug lead.
6. Store the engine in a clean, dry place.
Transport
1. Turn the fuel valve to the OFF position.
2. Tighten the fuel cap.
3. Read and follow the transport guidelines
provided by equipment manufacturer.
Engine.
Dirty.Air.
Faulty.
Cleaner
Spark.Plug