Section 5. Fuel System And Governor - Kohler SV810-840 Service Manual

Fuel System and Governor
This section covers the carbureted fuel systems used
on these engines. The governor system is covered at
the end of this section.
WARNING: Explosive Fuel!
Fuel System Components
The typical carbureted fuel system and related
components include the following:
• Fuel Tank
• Fuel Lines
• In-line Fuel Filter
• Fuel Pump
• Carburetor
Operation
The fuel from the tank is moved through the in-line
equipped with a fuel pump, the fuel tank outlet is
located above the carburetor inlet allowing gravity to
feed fuel to the carburetor.
drawn into the carburetor body. There, the fuel is
mixed with air. This fuel-air mixture is then burned in
the engine combustion chamber.
Section 5
Fuel Recommendations
General Recommendations
Purchase gasoline in small quantities and store
in clean, approved containers. A container with a
capacity of 2 gallons or less with a pouring spout is
recommended. Such a container is easier to handle
and helps eliminate spillage during refueling.
season, to minimize gum deposits in your fuel
system and to ensure easy starting.
• Do not add oil to the gasoline.
fuel to expand.
Fuel Type
For best results, use only clean, fresh, unleaded
gasoline with a pump sticker octane rating of 87 or
higher. In countries using the Research Fuel Rating
Method, it should be 90 octane minimum.
Unleaded gasoline is recommended, as it leaves
less combustion chamber deposits and reduces
harmful exhaust emissions. Leaded gasoline is not
recommended.
Gasoline/Alcohol blends
Gasohol (up to 10% ethyl alcohol, 90% unleaded
gasoline by volume) is approved as a fuel for Kohler
Gasoline/Ether blends
volume) are approved as a fuel for Kohler engines.
Fuel System and Governor
Section 5
5
5.1