Specifications

Fueling Small Engines with Propane
The AltFuel Green Conversion Kit and its components are designed to be fueled with VAPOR propane gas.
The use of fuels other than vapor propane is strictly prohibited and may damage the components of the
Green Conversion Kit or engine. AltFuel LLC will not be healed responsible for damage to AltFuel products
or engines where liquid propane or other fuels have been used with the AltFuel Green Conversion Kit.
When choosing a cylinder to fuel the AltFuel Green Conversion kit it is extremely important to ensure the
cylinder is a vapor service cylinder. If you are not sure the cylinder you intend to use is vapor service
please have it inspected and tested for vapor delivery by a qualified technician at your propane supplier.
Once you are sure it is a vapor service cylinder it must be mounted in the correct orientation for it to
function properly and deliver reliable liquid free vapor propane. Horizontal cylinders must be mounted
horizontally with arrows on bottom facing up; vertical vapor cylinders must be mounted vertically, etc.
Always refer to the cylinder manufacture for proper mounting and application specifications.
Starting
Engines 1-2hp
Cold Start:
1. Choke ¾ closed.
2. Throttle full open.
3. Fuel Control Valve 1/8 turn.
4. Prime 2 seconds.
5. After start and warm up adjust Fuel Control Valve to optimum power setting according to use.
6. Mark Fuel control Valve setting for reference.
7. If the engine will not start, please repeat the installation that applies to your application.
Do not over-prime. Stop priming when resistance is felt on the primer. Forcing the primer
will damage the regulator and is not covered under warranty.
Warm Start:
1. Choke ¾ closed.
2. Throttle full open.
3. After start and warm up adjust Fuel Control Valve to optimum power setting according to use.
* Engines of this size are very sensitive to the air/fuel ratio. This is controlled by the choke on the
engine and the
Fuel Control Valve on the Regulator System. The choke setting must be very precise. If the choke
moves a very small amount the engine will change widely in performance.
** Engine idle may be rough or loop until the components in the Regulator System have had a
chance to break in. This may take up to 20 hours of run time.
Stopping
All Engines
1. Slow engine down to near idle.
2. Turn engine off.
3. If unit is to be stored or transported in an enclosed area or trailer, close valve on propane
cylinder(s).
4. Close valve on propane cylinders on any unit that will not be restarted within a few minutes.
5. The Fuel Control Valve on the Regulation System does not need to be closed as long as the
valve(s) on the attached propane cylinders are closed.