Specifications
Engines 3-45Hp
If you have one of the following engines listed below please see page 11 Specialty Engines.
Kohler 16211-ZL8-000 or 4185306-S or 1205301
Briggs 130000 Series Utility Engine (Tillers, Go-Carts, Pump, etc.)
Tecumseh 16211-ZL8-000 (5HP-11HP engines for generators, log splitters, etc.)
Kawasaki (V-Twin Engines) AF1-792295 FX751V, FX801V, FX850V, FX921V
Note: Due to changes in O.E.M configurations and application/engine configurations the Intake
adapter or Orifices may need to be slightly altered for best fit and performance.
1. Close gasoline on/off valve if available or empty gas tank of gasoline.
2. Start engine and run until all gasoline is consumed from the carburetor.
3. Disconnect spark plug(s).
4. Disconnect battery.
5. Remove air filter cover, air filter, and air filter assembly in order to access carburetor.
6. Remove carburetor and insulator plate.
7. Carefully thread provided orifice into the AltFuel Intake Adapter. Thread orifice in until non-
threaded section of orifice touches the surface of Intake Adapter. Do not over tighten. Attach 90-
degree elbow to orifice(s) on Intake Adapter if needed.
8. Apply Teflon tape or pipe sealant to threaded fitting on the end of the AltFuel Fuel Supply Line
and carefully thread into orifice(s) or 90-degree elbow on Intake Adapter.
9. Note: Be sure not to stretch Governor spring. Governor spring must be replaced if stretched.
10. Install Intake Adapter between the carburetor and engine. Be sure to keep all gaskets in place and
ensure that all gaskets not damaged. The orifice side of the Intake adapter may be on the top or
bottom depending on your personal preference and/or setup of your engine/application.
11. Reassemble the carburetor system with the AltFuel Intake Adapter plate in place. Be careful to
put all gaskets back in the correct positions. (If a gasket is damaged or misplaced, it is very
important to replace it. If your gaskets are old or dirty it is recommend replace them.) Ensure all
parts are secured properly before moving to the next step.
Note: On engines with dual barrel carburetors the gaskets used behind the carburetor must seal
the area between the two holes to prevent cross-vacuum
NOTE: Follow 12a and 13a for residential use, and for commercial use follow 12b and 13b.
12a. Mount Regulator System away from direct heat or spark sources. Secure the AltFuel Green
Conversion Kit regulator system to your equipment in the desired position where the conversion
systemisoutofharm’sway.Makesurethattheconversionkitisinadesirablepositionfor
starting and stopping purposes.
Note: If your engine is 10 horsepower or higher, the conversion kit must be mounted vertically*
12b. Remove 1# bottle adapter fitting on Regulator System and replace with 1/4MNPT by 3/8 Flare
fitting.
13a. Connect Fuel Supply Line to Regulator System.
13b. Caution: Do not install cylinder attachment line to output port of second stage regulator.
14. Attach Cylinder Attachment line to propane cylinder.
15. Check that all Fuel Supply Lines and Cylinder Attachment Lines are away from heat sources
and pinch points.