Specifications

Prior to Installation
For best engine life and performance, we recommend you check your oil and replace it with a high-
grade synthetic blend of motor oil applicable to your engine before installing the AltFuel Green
Conversion Kit. Any engine that you intend on converting to propane fuel should be in good running
condition before attempting to install this kit.
Check compression. Compression must be above 120psi. If compression is below 120psi the
performance of the engine on propane vapor will be less than optimal. Engines with significantly
lower than factory compression will have less than optimal performance on propane vapor fuel.
Inspect valves and adjust to manufacture specifications.
On all Kawasaki engines adjust valves .002 over factory settings on all twin cylinder engines per
Kawasaki Technical Manual or refer to Kawasaki technician
For best engine life we recommend running high synthetic oil.
All spark plugs must be changed to platinum/iridium spark plugs.
The stock spark plugs used in gasoline utility engines rely on the carbon in gas to help arc the plug.
Since there is no carbon in propane fuel, the spark plug is the only conductor of the electrical
current, causing the standard plug to burn out sooner. We therefore suggest frequent maintenance
of the spark plugs used in engines which have the AltFuel Conversion Kit.
Inspect spark plug gap and adjust to .035-.040 gap. Clean or replace the spark plug to ensure proper
easy starts.
Check air filter. Air filter must be new or clean and free of dirt and debris. Replace if needed.
Note: Some engines and applications may need to be modified in order to achieve optimum
performance.
Specialty Tools Needed
1 – Siphon
1 – Gas tank to contain siphoned gasoline
1 – Socket set
1 – Tachometer
1 – Compression test kit
1 – Teflon tape
1 – Flat head screwdriver and hex head screw drivers
1 – Test cylinder: For 1-13hp engine conversion any propane cylinder will work. For 13-20hp
conversion a 20lb vapor aluminum/steel propane cylinder (Buffer cylinder) or larger will be needed
to test the application. For 20-45hp conversions a 33lb vapor cylinder is needed.
Dual Fuel Options
If you happen to run out of propane, you have the option to run your engine on gasoline. Simply
fill the fuel tank, turn the gasoline on/off valve on, and start. DO NOT RUN PROPANE AND
GASOLINE AT THE SAME TIME! To return to propane fuel, siphon all gasoline from the fuel tank
and run the engine so all gasoline is consumed. WE ONLY RECOMMEND RETURNING TO
GASOLINE IN AN EMERGENCY.