Kohler Command CH13 User Manual

5.4
Section 5
Fuel System and Governor
Figure 5-4. Carburetor Adjustment.
WARNING: Explosive Fuel!
Gasoline is extremely flammable and its vapors can explode
if ignited. Store gasoline only in approved containers, in
well ventilated, unoccupied buildings, away from sparks or
flames. Do not fill the fuel tank while the engine is hot or
running, since spilled fuel could ignite if it comes in contact
with hot parts or sparks from ignition. Do not start the
engine near spilled fuel. Never use gasoline as a cleaning
agent.
Carburetors
These engines, based upon when produced, are
equipped with either an adjustable main jet
carburetor, or an emission compliant fixed jet
carburetor manufactured be Walbro or Nikki. See
Figure 5-4.
Walbro carburetors have a low idle speed screw and a
low idle fuel adjusting needle. Nikki carburetors only
have a low idle speed screw. Certified carburetors will
have fixed idle fuel or a limiter cap on the idle fuel
adjusting needle.
Troubleshooting
If engine troubles are experienced that appear to be
fuel system related, check the following areas before
adjusting or disassembling the carburetor.
• Make sure the fuel tank is filled with clean, fresh
gasoline.
• Make sure the fuel tank cap vent is not blocked
and that it is operating properly.
• Make sure fuel is reaching the carburetor. This
includes checking the fuel shut-off valve, fuel
tank filter screen, in-line fuel filter, fuel lines, and
fuel pump for restrictions or faulty components
as necessary.
• Make sure the air cleaner base and carburetor is
securely fastened to the engine using gaskets in
good condition.
• Make sure the air cleaner element is clean and all
air cleaner components are fastened securely.
• Make sure the ignition system, governor system,
exhaust system, and throttle and choke controls
are operating properly.
If the engine is still hard-to-start, runs roughly, or
stalls at low idle speed, it may be necessary to adjust
or service the carburetor.
Walbro
Nikki
Low Idle Speed
Adjustment Screw
Low Idle Fuel
Adjustment Needle
Low Idle Speed
Adjustment Screw

Kohler Command CH13 Specifications

General

Brand	Kohler
Model	Command CH13
Category	Engine
Language	English