Kohler Command CV730 User Manual download pdf (Page 69)

5B.2

Section 5B

EFI Fuel System

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.

The EFI fuel system remains under high pressure even

when the engine is stopped. Before attempting to service

any part of the fuel system, the pressure must be relieved.

Pressure tester, (part of EFI Service Kit, see Section 2) has

an integral relief valve. Connect the black tester hose to the

test valve in the fuel rail. Route the clear hose into a

portable gasoline container. Depress the button on the tester

relief valve.

Initial Starting/Priming Procedure

Important: The EFI fuel system must be purged of air

(primed) prior to the initial start up, and/or any time

the system has been disassembled or the fuel tank run

dry.

1. Locate the electronic control unit (ECU) for the

EFI system. Check the part number on the end. If

the Part No. is 24 584 28 or higher, the ECU has a

built-in priming feature.

a. Turn the key switch to the “on/run” position.

You will hear the fuel pump cycle on and off.

When the fuel pump stops cycling

(approximately one minute), the system is

primed; start the engine.

Description

2. For plastic-cased ECU’s below 24 584 28-S, the

system can be primed by manually cycling the

fuel pump.

a. Turn the key switch to the “on/run” position.

The fuel pump will run for about three

seconds and stop. Turn the switch off and

back on to restart the fuel pump. Repeat

this procedure until the fuel pump has

cycled five times, then start the engine.

3. The system can also be primed similar to

relieving pressure.

a. Connect the pressure gauge as described

above for relieving fuel pressure. Depress

and hold the release button and crank the

engine until the air is purged and fuel is

visible in the discharge tube. If fuel is not

visible after 10 seconds, stop cranking and

allow the starter to cool for 60 seconds.

Fuel Recommendations

General Recommendations

Purchase gasoline in small quantities and store in

clean, approved containers. An approved container

with a capacity of 2 gallons or less with a pouring

spout is recommended. Such a container is easier to

handle and helps prevent spillage during refueling.

• Do not use gasoline left over from the previous

season, to minimize gum deposits in your fuel

system, and to ensure easy starting.

• Do not add oil to the gasoline.

• Do not overfill the fuel tank. Leave room for the

fuel to expand.

Fuel Type

Do not use leaded gasoline, as component damage

will result. Any costs/damages incurred as a result of

using leaded fuel will not be warranted. Use only

clean, fresh, unleaded gasoline with a pump sticker

octane rating of 87 or higher. In countries using the

Research method, it should be 90 octane minimum.

Explosive Fuel can cause fires and

severe burns.

Fuel system ALWAYS remains under

HIGH PRESSURE.

WARNING

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