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Fuel System
CARBURETOR
Explosive Fuel can cause fi res and severe
burns.
Do not fi ll fuel tank while engine is hot or
running.
Gasoline is extremely fl ammable and its vapors can
explode if ignited. Store gasoline only in approved
containers, in well ventilated, unoccupied buildings,
away from sparks or fl ames. Spilled fuel could ignite
if it comes in contact with hot parts or sparks from
ignition. Never use gasoline as a cleaning agent.
Keihin One-Barrel Carburetor Components
I
A
E
F
H
G
A
Idle Speed Screw
C
Idle Jet
E
Main Jet
Shut-off Solenoid
G
Assembly
I
Choke Lever
22
WARNING
B
C
D
B
Carburetor Body
D
Plug
F
Float
H
Fuel Bowl
KohlerEngines.com
Walbro One-Barrel Carburetor Components
G
A
C
D
F
A
Idle Speed Screw
C
Main Jet
E
Fuel Bowl
G
Choke Lever
Engines in this series are equipped with either a Keihin
or Walbro fi xed main jet carburetor. Most carburetors
utilize a fuel shut-off solenoid and feature a self-relieving
choke.
Troubleshooting Checklist
When engine starts hard, runs rough, or stalls at low
idle speed, check these areas before adjusting or
disassembling carburetor.
1. Make sure fuel tank is fi lled with clean, fresh
gasoline.
2. Make sure fuel tank cap vent is not blocked and is
operating properly.
3. Make sure fuel is reaching carburetor. This includes
checking fuel shut-off valve, fuel tank fi lter screen,
in-line fuel fi lter, fuel lines and fuel pump for
restrictions or faulty components as necessary.
4. Make sure air cleaner base and carburetor are
securely fastened to engine using gaskets in good
condition.
5. Make sure air cleaner element (including precleaner
if equipped) is clean and all air cleaner components
are fastened securely.
6. Make sure ignition system, governor system,
exhaust system, and throttle and choke controls are
operating properly.
B
E
B
Carburetor Body
D
Float
Shut-off Solenoid
F
Assembly
16 690 01 Rev. --
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Troubleshooting
