Kohler COMMAND CH450 Owner's Manual - Page 11

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NOTE: Operating the engine with a blocked grass

screen, dirty or plugged cooling fins, and/or

cooling shrouds removed, will cause engine

damage due to overheating.

Ignition System

This engine is equipped with a dependable electronic

magneto ignition system. Other than periodically

checking/replacing the spark plug, no maintenance,

timing, or adjustments are necessary or possible with

this system.

In the event starting problems should occur which are not

corrected by replacing the spark plugs, see your Kohler

Engine Service Dealer for trouble analysis.

Check Spark Plug

Every 200 hours of operation, remove the spark plug,

check its condition, and reset the gap or replace with a

new plug as necessary. A high-performance spark plug,

Champion

Platinum 3071 is standard on PRO Series

engines (Kohler Part No. 25 132 12-S). Some engines

use standard spark plug Champion

Part No. 12 132 02-S). Equivalent alternate brand plugs

can also be used.

1. Before removing the spark plug, clean the area

around the base of the plug to keep dirt and debris

out of the engine.

2. Remove the plug and check its condition. Replace

the plug if worn or reuse is questionable.

NOTE: Do not clean the spark plug in a machine

using abrasive grit. Some grit could remain

in the spark plug and enter the engine

causing extensive wear and damage.

3. Check the gap using a wire feeler gauge. Adjust

the gap by carefully bending the ground electrode.

See Figure 11. Gap plugs to 1.02 mm (0.040 in.).

Wire Gauge

Spark Plug

Ground

Electrode

Figure 11. Servicing Spark Plug.

RC12YC (Kohler

Gap

4. Reinstall the spark plug into the cylinder head.

Torque the spark plug to 24.4-29.8 N·m

(18-22 ft. lb.).

Battery Charging

WARNING: Explosive Gas!

Batteries produce explosive hydrogen gas while being

charged. To prevent a fire or explosion, charge batteries

only in well ventilated areas. Keep sparks, open flames,

and other sources of ignition away from the battery at all

times. Keep batteries out of the reach of children.

Remove all jewelry when servicing batteries.

Before disconnecting the negative (-) ground cable,

make sure all switches are OFF. If ON, a spark will occur

at the ground cable terminal which could cause an

explosion if hydrogen gas or gasoline vapors are present.

Fuel Filter

Most engines are equipped with an in-line fuel filter.

Periodically inspect the filter and replace with a genuine

Kohler filter every 200 operating hours.

Fuel Line

In compliance with CARB Tier III Emission Regulations,

these engines with a Family identification number

beginning with "6" or greater (see Figure 12), 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.XXXXGC

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 12. Family Number Location.

N11236