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Adjustto

Lean

Midpoint

Figure 14. Optimum

Low Idle Fuel Setting.

Low Idle Speed Setting: Place the throttle control

into the "idle"

or "slow"

position. Set the low idle

speed to 1500 RPM* (_+75 RPM) by turning the

low idle speed adjusting screw in or out. Check

the speed using a tachometer.

*NOTE: The actual low idle speed depends on the

application - refer to equipment

manufacturer's

recommendations.

The

recommended

low idle speed for basic

engines is 1500 RPM. To ensure best

results when setting the low idle fuel

needle, the low idle speed must not

exceed 1500 RPM (+ 75 RPM).

Troubleshooting

When troubles occur, be sure to check the simple

causes which, at first, may seem too obvious to be

considered. For example, a starting problem could be

caused by an empty fuel tank. Some common causes

of engine troubles are listed in the following table.

Do not attempt to service or replace major engine

components, or any items that require special timing or

adjustment procedures. Have your Kohler Engine

Service Dealer do this work.

Possible

Cause

Improper

Dirt In

Dirty

Incorrect

Engine

DirtyAir

Faulty

Problem

Fuel

Line

Grass

Screen

Oil Level

Overloaded

Cleaner

Spark

Plug

Will

Not Start

Hard

Starting

Stops

Suddenly

Lacks

Power

Operates

Erratically

Knocks

or Pings

Skips

or Misfires

Backfires

Overheats

High

Fuel

Consumption

Storage

If the engine will be out of service for two months or

more, use the following storage procedure:

1. Clean the exterior surfaces of the engine.

2. Change the oil and filter while the engine is still

warm from operation. See "Change Oil and Filter"

on page 9.

The fuel system must be completely emptied, or

the gasoline must be treated with a stabilizer to

prevent deterioration. If you choose to use a

stabilizer, follow the manufacturers

recommendations,

and add the correct amount for

the capacity of the fuel system. Fill the fuel tank

with clean, fresh gasoline. Run the engine for 2-3

minutes to get stabilized fuel into the carburetor.

To empty the system, run the engine until the tank

and system are empty.

Due to the deep recess around the spark plug,

blow out the cavity with compressed air. Remove

the spark plug. The spark plug is most accessible

when the blower housing is removed for cleaning.

Add one tablespoon of engine oil into the spark

plug hole. Install the plug, but do not connect the

plug lead. Crank the engine two or three

revolutions. Connect the plug lead.

5. Reinstall the blower housing, if removed

previously, and torque the blower housing screws

to 7.5 N.m (65 in. lb.).

6. Store the engine in a clean, dry place.