Kohler Command PRO CH22 Owner's Manual - Page 14

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EFI Engines: A special, high volume, high pressure

filter with greater filtration capabilities and internal

surface area is used. See Figure 15.

Fuel Filter

Fuel Line

Figure 15. EFI Fuel Filter and Line.

Replacement is recommended every 1500 hours, or

more frequently under extremely dusty or dirty

conditions. When replacement is necessary, always

use genuine Kohler parts.

Fuel Line

Carbureted Engines: In compliance with CARB Tier

III Emission Regulations, carbureted engines with a

Family identification number beginning with "6" or

greater (see Figure 16), must use Low Permeation SAE

30 R7 rated fuel line; certified to meet CARB

requirements. Standard fuel line may not be used.

Order replacement hose by part number through a

Kohler Engine Service Dealer.

IMPORTANT ENGINE INFORMATION

THIS ENGINE MEETS U.S. EPA AND CA 2005

AND LATER AND EC STAGE II (SN:4) EMISSION

REGS FOR SI SMALL OFF–ROAD ENGINES

FAMILY

6 KHXS.XXXX PH

TYPE APP

DISPL. (CC)

MODEL NO.

SPEC. NO.

SERIAL NO.

BUILD DATE

OEM PROD. NO.

EMISSION COMPLIANCE PERIOD:

EPA:

CARB:

CERTIFIED ON:

REFER TO OWNER'S MANUAL FOR HP RATING,

SAFETY, MAINTENANCE AND ADJUSTMENTS

1-800-544-2444 www.kohlerengines.com

KOHLER CO. KOHLER, WISCONSIN USA

Figure 16. Family Number Location.

EFI Engines: A special fuel line, capable of

withstanding the high pressure of the EFI fuel system,

is used (must meet SAE R9 specifications). See Figure

15. If fuel line must be replaced, see your Kohler

Engine Service Dealer.

Carburetor Troubleshooting and

Adjustments

Engines in this series use either a one- or two-barrel

carburetor depending on model, and may also be

equipped with a Governed Idle System. Specific

adjustment procedures are provided based on the

model and carburetor involved. If the engine is

equipped with a Governed Idle System, refer to Models

with Governed Idle System on page 15 when

performing any carburetor adjustment, as an

additional step to the listed adjustment procedure(s) is

required.

NOTE: Carburetor adjustments should be made only

The carburetor is designed to deliver the correct

fuel-to-air mixture to the engine under all operating

conditions. To comply with current emission

regulations, the fuel mixture settings are made at the

factory and cannot be adjusted.

NOTE: To ensure correct engine operation at altitudes

Low Idle

Speed Adj.

N11236

Figure 17. Carburetor (CH18-23,CH620-CH730,CH740).

Troubleshooting

If engine troubles are experienced that appear to be fuel

system related, check the following areas before

adjusting the carburetor.

• Make sure the fuel tank is filled with clean, fresh

• Make sure the fuel tank cap vent is not blocked and

after the engine has warmed up.

above 1525 meters (5000 ft.), it may be

necessary to have an authorized Kohler dealer

install a special high-altitude jet kit in the

carburetor. If a high-altitude kit has been

installed, the engine must be reconverted to

the original jet size, before it is operated at

lower altitudes, or overheating and engine

damage can result.

gasoline.

that it is operating properly.

Low Idle

Fuel Adj.

Needle &

Fixed Main Jet

(under optional

solenoid)