Kohler PCH680, PCH740, PCV680, PCV740, Command PRO PCH680 Owner's Manual

24 590 35 Rev. B

KohlerEngines.com

Owner's Manual

IMPORTANT: Read all safety precautions and instructions carefully before

operating equipment. Refer to operating instruction of
equipment that this engine powers.

Ensure engine is stopped and level before performing any

maintenance or service.

Warranty coverage as outlined in warranty card and on

KohlerEngines.com. Please review carefully as it provides you
specifi c rights and obligations.

To maintain compliance with applicable emission regulations,

exhaust system backpressure may not exceed limits which can
be found on KohlerEngines.com. Search by Model No., select
Read More, then select Specs tab.

Record engine information to reference when ordering parts or obtaining warranty coverage.

Engine Model

Specifi cation

Serial Number

Purchase Date

PCH680, PCH740
PCV680, PCV740

Propane Electronic Fuel Injection (EFI)

2 24 590 35 Rev. BKohlerEngines.com

Safety Precautions

WARNING: A hazard that could result in death, serious injury, or substantial property damage.

CAUTION: A hazard that could result in minor personal injury or property damage.

NOTE: is used to notify people of important installation, operation, or maintenance information.

WARNING

Explosive Fuel
can cause fi res
and severe
burns.

If a gaseous
odor is detected,
ventilate area
and contact
an authorized
service
technician.

Propane is extremely
fl ammable and is heavier
than air and tends to settle
in low areas where a spark
or fl ame could ignite gas.
Do not start or operate this
engine in a poorly ventilated
area where leaking gas
could accumulate and
endanger safety of persons
in area.

To ensure personal safety,
installation and repair
of propane fuel supply
systems must be performed
only by qualifi ed propane
system technicians.
Improperly installed and
maintained propane
equipment could cause
fuel supply system or other
components to malfunction,
causing gas leaks.

Observe federal, state
and local laws governing
propane fuel, storage, and
systems.

WARNING

Carbon
Monoxide can
cause severe
nausea, fainting
or death.

Avoid inhaling
exhaust fumes.

Engine exhaust gases
contain poisonous carbon
monoxide. Carbon
monoxide is odorless,
colorless, and can cause
death if inhaled.

WARNING

High Pressure
Fluids can
puncture skin
and cause
severe injury or
death.

Do not work
on fuel system
without proper
training or safety
equipment.

Fluid puncture injuries are
highly toxic and hazardous.
If an injury occurs, seek
immediate medical attention.

WARNING

Rotating Parts
can cause
severe injury.

Stay away while
engine is in
operation.

Keep hands, feet, hair,
and clothing away from all
moving parts to prevent
injury. Never operate engine
with covers, shrouds, or
guards removed.

California Proposition 65 Warning

Engine exhaust from this product contains chemicals known
to State of California to cause cancer, birth defects, or other
reproductive harm.

CAUTION

Electrical Shock
can cause injury.

Do not touch
wires while
engine is
running.

WARNING

Accidental
Starts can cause
severe injury or
death.

Disconnect and
ground spark
plug lead(s)
before servicing.

Before working on engine or
equipment, disable engine
as follows: 1) Disconnect
spark plug lead(s). 2)
Disconnect negative (–)
battery cable from battery.

Before disconnecting
negative (-) ground cable,
make sure all switches
are OFF. If ON, a spark
will occur at ground cable
terminal which could cause
an explosion if hydrogen
gas or propane fuel vapors
are present.

WARNING

Hot Parts can
cause severe
burns.

Do not touch
engine while
operating or just
after stopping.

Never operate engine with
heat shields or guards
removed.

3

24 590 35 Rev. B

KohlerEngines.com

I

K

J

L

P

M

E

F

G

N

O

D

B

A

C

H

Q

Y

S

T

Z

AB

U

W

R

AC

V

X

AD

AE

AA

A End Cap B Element C Inner Element D Retaining Clip

E Inlet Screen F

Air Cleaner

Housing

G Ejector Area H

Heavy-Duty Air

Cleaner

I

Air Cleaner

Knob

J Wing Nut K

Air Cleaner

Cover

L Element Cover

M Precleaner N Paper Element O

Air Cleaner

Base

P Rubber Seal

Q

Low-Profi le Air

Cleaner

R Debris Screen S Oil Filter T

Vaporizer/

Regulator

U

Vaporizer/

Regulator Inlet

Filter

V

Vaporizer/

Regulator Drain

Plug

W Lock-Off X

Unique EFI Fuel

Filter

Y Spark Plug Z Oil Cooler AA Oil Fill/Dipstick AB Filter Minder

AC Oil Fill AD Oil Drain Plug AE Dipstick

Visit KohlerEngines.com for service parts information and purchasing options.

4 24 590 35 Rev. BKohlerEngines.com

Pre-Start Checklist

1. Check oil level. Add oil if low. Do not overfi ll.

2. Check fuel gauge (if equipped). If propane
tank is low, have it refi lled. Check fuel system
components and lines for leaks.

3. Check and clean cooling areas, air intake
areas and external surfaces of engine
(particularly after storage).

4. Check that air cleaner components and all
shrouds, equipment covers, and guards are
in place and securely fastened.

5. Check spark arrestor (if equipped).

Starting

WARNING

Carbon Monoxide can cause
severe nausea, fainting or death.

Avoid inhaling exhaust fumes.

Engine exhaust gases contain poisonous
carbon monoxide. Carbon monoxide is
odorless, colorless, and can cause death if
inhaled.

WARNING

Rotating Parts can cause severe
injury.

Stay away while engine is in
operation.

Keep hands, feet, hair, and clothing away
from all moving parts to prevent injury. Never
operate engine with covers, shrouds, or
guards removed.

NOTE: Do not crank engine continuously for

more than 10 seconds. Allow a 60
second cool down period between
starting attempts. Failure to follow
these guidelines can burn out starter
motor.

NOTE: Upon start-up, a metallic ticking may

occur. Run engine for 5 minutes. If
noise continues, run engine at mid
throttle for 20 minutes. If noise persists,
take engine to your local Kohler
authorized dealer.

1. Place throttle control midway between slow
and fast positions.

2. Slowly turn fuel valve on propane tank to full
open position.

3. Turn key switch to START position. Release
switch as soon as engine starts. If starter
does not turn engine over, shut off key switch
immediately. Do not make further attempts to
start engine until condition is corrected. Do
not jump start. See your Kohler authorized
dealer for trouble analysis.

Cold Weather Starting Hints

1. Use proper oil for temperature expected.

2. Disengage all possible external loads.

Stopping

1. If possible, remove load by disengaging all
PTO driven attachments.

2. Turn fuel valve to full closed position and
allow engine to continue running until it runs
out of fuel. Turn key switch to OFF position.

Angle of Operation

Refer to operating instructions of equipment
this engine powers. Do not operate this engine
exceeding maximum angle of operation; see
specifi cation table. Engine damage could result
from insuffi cient lubrication.

Engine Speed

NOTE: Do not tamper with governor setting to

increase maximum engine speed.
Overspeed is hazardous and will void
warranty.