Kohler Command PRO CH940 Manual de usuario
CH940-CH1000
Service Manual
KohlerEngines.com
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.
62 690 01 Rev. J 1
2 Safety
3 Maintenance
5Specications
21 Tools and Aids
24 Troubleshooting
28 Air Cleaner/Intake
29 Fuel System
35 Governor System
36 Lubrication System
38 Electrical System
49 Starter System
53 Disassembly/Inspection and Service
69 Reassembly
Safety
262 690 01 Rev. JKohlerEngines.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
res and severe burns.
Do not ll fuel tank while
engine is hot or running.
Gasoline is extremely ammable
and its vapors can explode if
ignited. Store gasoline only in
approved containers, in well
ventilated, unoccupied buildings,
away from sparks or ames.
Spilled fuel could ignite if it comes
in contact with hot parts or sparks
from ignition. Never use gasoline
as a cleaning agent.
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.
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
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.
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.
WARNING
Cleaning Solvents can
cause severe injury or
death.
Use only in well
ventilated areas away
from ignition sources.
Carburetor cleaners and solvents
are extremely ammable. Follow
cleaner manufacturer’s warnings
and instructions on its proper and
safe use. Never use gasoline as a
cleaning agent.
CAUTION
Electrical Shock can
cause injury.
Do not touch wires while
engine is running.
CAUTION
Damaging Crankshaft
and Flywheel Can cause
personal injury.
Using improper procedures can
lead to broken fragments. Broken
fragments could be thrown from
engine. Always observe and use
precautions and procedures when
installing ywheel.
CAUTION
Failure to utilize or
reassemble debris
screen as designed could
result in debris screen
failure and serious
personal injury.
Maintenance
362 690 01 Rev. J KohlerEngines.com
MAINTENANCE INSTRUCTIONS
WARNING
Before working on engine or equipment, disable engine as
follows: 1) Disconnect spark plug lead(s). 2) Disconnect
negative (–) battery cable from battery.
Accidental Starts can cause severe injury or
death.
Disconnect and ground spark plug lead(s)
before servicing.
Normal maintenance, replacement or repair of emission control devices and systems may be performed by any repair
establishment or individual; however, warranty repairs must be performed by a Kohler authorized dealer.
MAINTENANCE SCHEDULE
Weekly
● Check lter minder. Air Cleaner/Intake
Every 25 Hours or Annually¹
● Service/replace low-prole precleaner. Air Cleaner/Intake
Every 100 Hours or Annually¹
● Change oil. Oil lter is recommended. Lubrication System
Every 150 Hours¹
● Replace low-prole air cleaner element. Air Cleaner/Intake
● Remove cooling shrouds and clean cooling areas. Air Cleaner/Intake
Every 150 Hours
● Check heavy-duty air cleaner element. Air Cleaner/Intake
● Replace fuel lter.
● Check oil cooler ns, clean as necessary. Lubrication System
Every 200 Hours
● Change oil lter. Lubrication System
Every 300 Hours
● Replace heavy-duty air cleaner element. Air Cleaner/Intake
Every 500 Hours or Annually¹
● Replace spark plugs and set gap. Electrical System
Every 500 Hours²
● Have crankshaft splines lubricated.
Every 600 Hours
● Replace heavy-duty inner air cleaner element. Air Cleaner/Intake
1Perform these procedures more frequently under severe, dusty, dirty conditions.
2Have a Kohler authorized dealer perform this service.
REPAIRS/SERVICE PARTS
Kohler genuine service parts can be purchased from Kohler authorized dealers. To nd a local Kohler authorized
dealer visit KohlerEngines.com or call 1-800-544-2444 (U.S. and Canada).
Maintenance
462 690 01 Rev. JKohlerEngines.com
OIL RECOMMENDATIONS
We recommend use of Kohler oils for best performance.
Other high-quality detergent oils (including synthetic)
of API (American Petroleum Institute) service class SJ
or higher are acceptable. Select viscosity based on
air temperature at time of operation as shown in table
below.
°F -20 020324060
50 80 100
°C -30 -20 -10 0 10 20 30 40
75
10W-30
5W-30
SAE 30
20W-50
FUEL RECOMMENDATIONS
WARNING
Explosive Fuel can cause res and severe
burns.
Do not ll fuel tank while engine is hot or
running.
Gasoline is extremely ammable and its vapors can
explode if ignited. Store gasoline only in approved
containers, in well ventilated, unoccupied buildings,
away from sparks or ames. Spilled fuel could ignite
if it comes in contact with hot parts or sparks from
ignition. Never use gasoline as a cleaning agent.
NOTE: E15, E20 and E85 are NOT approved and
should NOT be used; effects of old, stale or
contaminated fuel are not warrantable.
Fuel must meet these requirements:
● Clean, fresh, unleaded gasoline.
● Octane rating of 87 (R+M)/2 or higher.
● Research Octane Number (RON) 90 octane minimum.
● Gasoline up to 10% ethyl alcohol, 90% unleaded is
acceptable.
● Methyl Tertiary Butyl Ether (MTBE) and unleaded
gasoline blend (max 15% MTBE by volume) are
approved.
● Do not add oil to gasoline.
● Do not overll fuel tank.
● Do not use gasoline older than 30 days.
STORAGE
If engine will be out of service for 2 months or more
follow procedure below.
1. Add Kohler PRO Series fuel treatment or equivalent
to fuel tank. Run engine 2-3 minutes to get stabilized
fuel into fuel system (failures due to untreated fuel
are not warrantable).
2. Change oil while engine is still warm from operation.
Remove spark plug(s) and pour about 1 oz. of
engine oil into cylinder(s). Replace spark plug(s) and
crank engine slowly to distribute oil.
3. Disconnect negative (–) battery cable.
4. Store engine in a clean, dry place.
Specications
562 690 01 Rev. J KohlerEngines.com
Engine Dimensions with Heavy-Duty Air Cleaner - Flywheel Side
A484.3 mm (19.07 in.) B
135.0 mm (5.32 in.)
Rain Cap Cover
Removal
C365.5 mm (14.39 in.) D
130.0 mm (5.12 in.)
Air Filter Cover
Removal
E74.0 mm (2.91 in.) FChoke Control GThrottle Control HMechanical Fuel
Pump
I698.6 mm
(27.50 in.) J5.4 mm (0.21 in.)
Spark Plug Lead KSupply Fuel Filter LEngine Mounting
Surface
M
8 X 10.3 mm
(0.40 in.)
Thru Mounting Holes
NCenter Line Engine O232.0 mm (9.13 in.) P106.0 mm (4.17 in.)
QMounting Hole "A" R136.2 mm (5.36 in.) S14.7 mm (0.58 in.)
Spark Plug Lead T
328.3 mm
(12.93 in.)
Air Filter Element
Removal
UOil Fill
A
C
E
D
B
GF
U
T
S
R
Q
P
O
M
N
L
K
J
H
I
Specications
662 690 01 Rev. JKohlerEngines.com
Engine Dimensions with Heavy-Duty Air Cleaner - PTO Side
A427.8 mm (16.84 in.) B107.9 mm (4.25 in.) C35° D30°
EOil Level Dipstick F45° G60.0 mm (2.37 in.)
Exhaust Port H340.8 mm (13.42 in.)
ISolenoid Shift Starter JMounting Hole "A" KRotation Direction L177.8 mm (7.0 in.)
Optional Pilot
M
M8 X 1.25 mm-6H in.
25 mm (0.98 in.)
Deep on a Ø 254 mm
(10.0 in.) B.C.
N
4 X 7/16-14 UNC-2B in.
21 mm (0.83 in.) Deep
on a Ø 142.9 mm
(5.63 in.) B.C.
O
4 X 3/8-16 UNC-2B in.
17 mm (0.67 in.) Deep
on a Ø 196.9 mm
(7.750 in.) B.C.
P2 X 35.0 mm (1.38 in.)
Gasket
Q4 X M8 X 1.25 mm
Studs
A
B
CC
DD
E
FF
Q
P
G
G
H
I
JK
FF
L
M
N
O
Specications
762 690 01 Rev. J KohlerEngines.com
Engine Dimensions with Heavy-Duty Air Cleaner - Starter Side
A
422.7 mm (16.64 in.)
Cylinder #1 Shroud
Removed
B
4 X 47.3 mm (1.86 in.)
Air Cleaner Clip
Clearance
CPTO Mounting
Surface D105.3 mm (4.14 in.)
Exhaust Port #1
E192.3 mm (7.57 in.) FMufer (Optional) G460.0 mm (18.11
in.) H9.5 mm (0.38 in.)
SQ. Keyway
I36.5 mm (1.44 in.) J155.6 mm (6.13 in.) K5/8-18 UNF-2B in.
38.1 mm (1.5 in.) Deep L113.2 mm (4.46 in.)
MEngine Mounting
Surface NOil Drain Plug
1/2 NPT Inch O435.0 mm (17.13 in.) P401.8 mm (15.82 in.)
Q135.0 mm (5.3 in.) R119.0 mm (4.69 in.) S16.0 mm (0.63 in.) TGrass Screen
UMounting Hole "A" V570.8 mm (22.47 in.) W50.0 mm (1.97 in.)
Oil Filter Removal XCylinder #1 Shroud
A
B
X
W
V
U
T
O
P
Q
R
S
C
N
M
LJ
G
K
I
H
FE
D
C
Specications
862 690 01 Rev. JKohlerEngines.com
Engine Dimensions with Heavy-Duty Air Cleaner - Opposite Starter Side
A
422.7 mm (16.64 in.)
Cylinder #2 Shroud
Removed
BLifting Point CCylinder #2 Shroud DAccess to Oil Cooler
EFuel Filter FMounting Hole "A" G16.0 mm (0.63 in.) H119.0 mm (4.69 in.)
I135.0 mm (5.32 in.) J239.5 mm (9.43 in.) KOil Drain Plug
1/2 NPT Inch LEngine Mounting
Surface
M4 X 4.0 mm (0.16 in.)
Pilot Height NPTO Mounting
Surface OPilot Surface POil Pressure Switch
Q82.3 mm (3.24 in.)
Exhaust Port #2
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
O
N
P
B
Q
Specications
962 690 01 Rev. J KohlerEngines.com
Engine Dimensions - Mounting Surface View
A232.0 mm (9.13 in.) B8 X 10.3 mm (0.40 in.)
Thru Mounting Holes CMounting Hole "A" D239.5 mm (9.43 in.)
E106.0 mm (4.17 in.) FPTO Mounting
Surface G135.0 mm (5.32 in.) H119.0 mm (4.69 in.)
I16.0 mm (0.63 in.)
A
B
C
D
G
E
F
H
I
Specications
10 62 690 01 Rev. JKohlerEngines.com
Engine Dimensions with Low-Prole Air Cleaner - Flywheel Side
A
B
CD
E
F
G
H
I
J
K
L
M
A484.3 mm (19.07 in.) B364.5 mm (14.35 in.) C106.0 mm (4.17 in.)
Lifting Point D85.7 mm (3.38 in.)
E76.3 mm (3.00 in.) F
Lifting Point
10 X 12 mm
(0.39 X 0.47 in.) Slot
G136.2 mm (5.36 in.) H14.7 mm (0.58 in.)
Spark Plug Lead
IMounting Hole "A" JEngine Mounting
Surface K575.1 mm (22.64 in.)
Lifting Point L5.4 mm (0.21 in.)
Spark Plug Lead
MOil Fill
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