Kohler Command Pro CH940-CH1000 Bedienungsanleitung

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. C 1

2 Safety

3 Maintenance

5 Speciﬁcations

13 Tools and Aids

16 Troubleshooting

20 Air Cleaner/Intake

21 Fuel System and Governor

28 Lubrication System

30 Electrical System

46 Disassembly

55 Reassembly

Safety

2 62 690 01 Rev. CKohlerEngines.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

ﬁres and severe burns.

Do not ﬁll fuel tank while

engine is hot or running.

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.

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.

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.

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 ﬂammable. Follow

cleaner manufacturer’s warnings

and instructions on its proper and

safe use. Never use gasoline as a

cleaning agent.

Maintenance

362 690 01 Rev. C KohlerEngines.com

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 ﬁlter minder. Air Cleaner/Intake

Every 25 Hours or Annually¹

●Service/replace low-proﬁle precleaner. Air Cleaner/Intake

Every 150 Hours¹

●Replace low-proﬁle air cleaner element. Air Cleaner/Intake

●Change oil. Oil ﬁlter is recommended. Lubrication System

●Remove cooling shrouds and clean cooling areas. Air Cleaner/Intake

Every 150 Hours

●Check heavy-duty air cleaner element. Air Cleaner/Intake

●Replace fuel ﬁlter. Fuel System and Governor

●Check oil cooler ﬁns, clean as necessary. Lubrication System

Every 300 Hours

●Change oil ﬁlter. Lubrication System

●Replace heavy-duty air cleaner element. Air Cleaner/Intake

Every 500 Hours²

●Have crankshaft splines lubricated.

Every 600 Hours

●Replace heavy-duty inner air cleaner element. Air Cleaner/Intake

●Replace spark plugs and set gap. Electrical System

1Perform these procedures more frequently under severe, dusty, dirty conditions.

2Have a Kohler authorized dealer perform this service.

Repairs/Service Parts

We recommend that you use a Kohler authorized dealer for all maintenance, service, and replacement parts for

engine. To ﬁnd a Kohler authorized dealer visit KohlerEngines.com or call 1-800-544-2444 (U.S. and Canada).

Maintenance

4 62 690 01 Rev. CKohlerEngines.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.

Fuel Recommendations

WARNING

Explosive Fuel can cause ﬁres and severe

burns.

Do not ﬁll fuel tank while engine is hot or

running.

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. 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 overﬁll 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.

Speciﬁcations

562 690 01 Rev. C KohlerEngines.com

Dimensions in millimeters.

Inch equivalents shown in [ ].

Engine Dimensions with Heavy-Duty Air Cleaner

Speciﬁcations

6 62 690 01 Rev. CKohlerEngines.com

Dimensions in millimeters.

Inch equivalents shown in [ ].

Engine Dimensions with Low-Proﬁle Air Cleaner

Speciﬁcations

762 690 01 Rev. C KohlerEngines.com

Engine Identiﬁcation Numbers

Kohler engine identiﬁcation numbers (model, speciﬁcation and serial) should be referenced for efﬁcient repair,

ordering correct parts, and engine replacement.

General Speciﬁcations3

CH940 CH960 CH980 CH1000

Bore 90 mm (3.54 in.)

Stroke 78.5 mm (3.1 in.)

Displacement 999 cc (61 cu. in.)

Oil Capacity (w/ﬁlter) (approximate) 2.7 L (2.9 U.S. qt.)

Maximum Angle of Operation (@ full oil level)425°

Torques CH940 CH960 CH980 CH1000

Blower Housing and Steel Metal

M6 Shoulder Screw

New, Untapped Hole (casting)

Used, Tapped Hole (casting)

New, Extruded Hole (sheet metal)

Used, Extruded Hole (sheet metal)

Mounting Clip (valley bafﬂe)

10.7 N·m (95 in. lb.)

7.3 N·m (65 in. lb.)

4.0 N·m (35 in. lb.)

2.0 N·m (18 in. lb.)

2.5 N·m (22 in. lb.)

M6 Screw

New, Untapped Hole (casting)

Used, Tapped Hole (casting)

10.7 N·m (95 in. lb.)

7.3 N·m (65 in. lb.)

Rectiﬁer-Regulator Fastener 2.0 N·m (18 in. lb.)

Oil Cooler Fastener 2.2 N·m (20 in. lb.)

Carburetor, Intake Manifold, and Air Cleaner

Intake Manifold Mounting Fastener

Torque in Two Stages ﬁrst to 16.9 N·m (150 in. lb.)

ﬁnally to 22.6 N·m (200 in. lb.)

Carburetor/Air Cleaner Mounting Nut 7.9 N·m (70 in. lb.)

Air Cleaner Mounting Screw (into intake manifold) 9.9 N·m (88 in. lb.)

Closure Plate

Closure Plate Fastener 24.4 N·m (216 in. lb.)

3 Values are in Metric units. Values in parentheses are English equivalents. Lubricate threads with engine oil prior to

assembly.

4Exceeding maximum angle of operation may cause engine damage from insufﬁcient lubrication.

Model. . . . . . . . . . . . . . . . . . . . . CH940

Command Engine

Horizontal Shaft

Numerical Designation

Speciﬁcation . . . . . . . . . . . . . . . CH940-0001

Serial . . . . . . . . . . . . . . . . . . . . . 3923500328

Year Manufactured Code Factory Code

Code Year

39 2009

40 2010

41 2011

Speciﬁcations

8 62 690 01 Rev. CKohlerEngines.com

Torques CH940 CH960 CH980 CH1000

Connecting Rod

Cap Fastener (torque in increments) 11.3 N·m (100 in. lb.)

Control Bracket

Mounting Screw (into intake manifold from air cleaner) 9.9 N·m (88 in. lb.)

Crankcase

Breather Cover Fastener 5.7 N·m (51 in. lb.)

Oil Drain Plug 21.4 N·m (16 ft . lb.)

Cylinder Head

Cylinder Head Fastener

Head Bolt - Torque in Two Stages ﬁrst to 22.6 N·m (200 in. lb.)

ﬁnally to 45.2 N·m (400 in. lb.)

Pipe Plug (3/4 in.) 28.25 N·m (250 in. lb.)

Rocker Arm Screw 14.6 N·m (130 in. lb.)

Fan/Flywheel

Fan Fastener 9.9 N·m (88 in. lb.)

Flywheel Retaining Screw 67.8 N·m (50 ft . lb.)

Governor Cross Shaft O.D.

Governor Lever Nut 7.3 N·m (65 in. lb.)

Grass Screen

Hex Stud 9.9 N·m (88 in. lb.)

Mounting Screw 9.9 N·m (88 in. lb.)

Front Drive Shaft Screw (into ﬂywheel) 24.4 N·m (216 in. lb.)

Ignition

Spark Plug 27 N·m (20 ft. lb.)

Ignition Module Fastener 6.2 N·m (55 in. lb.) into new holes

4.0 N·m (35 in. lb.) into used holes

Lifter Feed Chamber

Cover/Bafﬂe Screw 6.2 N·m (55 in. lb.)

Mufﬂer

Retaining Nut 24.4 N·m (216 in. lb.)

Oil Cooler

Mounting Screws 3.9 N·m (35 in. lb.)

Oil Filter

Oil Filter Refer to oil ﬁlter for instructions.

Oil Filter Adapter/Housing

Mounting Screw 24.4 N·m (216 in. lb.)

Reservoir (oil)

Mounting Screw 24.4 N·m (216 in. lb.)

Speciﬁcations

962 690 01 Rev. C KohlerEngines.com

Torques CH940 CH960 CH980 CH1000

Solenoid (starter)

Mounting Hardware

Delco-Remy Starter 4.0-6.0 N·m (35-53 in. lb.)

Nut, Positive (+) Brush Lead

Delco-Remy Starter 8.0-11.0 N·m (71-97 in. lb.)

Starter Assembly

Thru Bolt

Delco-Remy (solenoid shift) 5.6-9.0 N·m (49-79 in. lb.)

Mounting Screw 15.3 N·m (135 in. lb.)

Brush Holder Mounting Screw

Delco-Remy Starter 2.5-3.3 N·m (22-29 in. lb.)

Stator

Mounting Screw 6.2 N·m (55 in. lb.)

Throttle/Choke Control Bracket

Fastener 9.9 N·m (88 in. lb.)

Valve Cover

Valve Cover Fastener 13.6 N·m (120 in. lb.)

Wear Limits CH940 CH960 CH980 CH1000

Camshaft

End Play 0.3/1.3 mm (0.011/0.051 in.)

Running Clearance 0.025/0.063 mm (0.0010/0.0025 in.)

Bore I.D.

New

Max. Wear Limit

20.000/20.025 mm (0.7874/0.7884 in.)

20.038 mm (0.7889 in.)

Bearing Surface O.D.

New

Max. Wear Limit

19.962/19.975 mm (0.7859/0.7864 in.)

19.959 mm (0.7858 in.)

Cam Lobe Proﬁle (minimum dimension, measured from base circle

to top of lobe)

Exhaust 35 mm (1.3779 in.)

Intake 34.1 mm

(1.3425 in.)

35 mm (1.3779 in.)

Closure Plate End Main Bearing Journal

O.D. - New

O.D. - Max. Wear Limit

Max. Taper

Max. Out-of-Round

44.978/45.00 mm (1.770/1.771 in.)

44.90 mm (1.767 in.)

0.022 mm (0.0009 in.)

0.025 mm (0.0010 in.)

Connecting Rod

Crankpin End I.D. @ 70°F

New

Max. Wear Limit

44.030/44.037 mm (1.7334/1.7337 in.)

0.070 mm (0.0028 in.)

Connecting Rod-to-Crankpin Running Clearance

New

Max. Wear Limit

0.030/0.055 mm (0.0012/0.0022 in.)

0.070 mm (0.0028 in.)

Connecting Rod-to-Crankpin Side Clearance 0.30/0.59 mm (0.0118/0.0232 in.)

Speciﬁcations

10 62 690 01 Rev. CKohlerEngines.com

Wear Limits CH940 CH960 CH980 CH1000

Connecting Rod-to-Piston Pin Running Clearance 0.015/0.028 mm (0.0006/0.0011 in.)

Piston Pin End I.D. @ 70°F

New

Max. Wear Limit

19.023/19.015 mm (0.7489/0.7486 in.)

19.036 mm (0.7494 in.)

Governor Cross Shaft Bore I.D.

New

Max. Wear Limit

8.025/8.050 mm (0.3159/0.3169 in.)

8.088 mm (0.3184 in.)

Connecting Rod Journal

O.D. - New

O.D. - Max. Wear Limit

Max. Taper

Max. Out-of-Round

Width

43.982/44.000 mm (1.731/1.732 in.)

43.97 mm (1.731 in.)

0.018 mm (0.0007 in.)

0.025 mm (0.0010 in.)

53.00/53.09 mm (2.0866/2.0901 in.)

Crankcase

Governor Cross Shaft Bore I.D.

New

Max. Wear Limit

8.025/8.050 mm (0.3159/0.3169 in.)

8.088 mm (0.3184 in.)

Crankshaft

End Play (free) 0.30/1.50 mm (0.011/0.059 in.)

Crankshaft Bore in Closure Plate

New, Without Main Bearing

With Main Bearing Installed

Max. Wear Limit

50.00/50.025 mm (1.9685/1.969 in.)

45.040/45.145 mm (1.7732/1.7773 in.)

45.158 mm (1.7778 in.)

Crankshaft to Sleeve Bearing (in crankcase)

New, Running Clearance 0.040/0.167 mm (0.0015/0.0065 in.)

Crankshaft Bore (in closure plate)

New, Without Bearing 50.025/50.00 mm (1.9694/1.9685 in.)

Crankshaft to Sleeve Bearing (in closure plate)

New, Running Clearance 0.040/0.167 mm (0.0015/0.0065 in.)

Crankshaft T.I.R.

PTO End, Crank in Engine 0.279 mm (0.0110 in.)

Entire Crank, in V-Blocks 0.10 mm (0.0039 in.)

Cylinder Bore

Cylinder Bore I.D.

O.D. - New

O.D. - Max. Wear Limit

Max. Taper

Max. Out-of-Round

90.000/90.025 mm (3.543/3.544 in.)

90.075 mm (3.546 in.)

0.013 mm (0.00051 in.)

Cylinder Head

Max. Out-of-Flatness 0.076 mm (0.003 in.)

Flywheel End Main Bearing Journal

O.D. - New

O.D. - Max. Wear Limit

Max. Taper

Max. Out-of-Round

44.978/45.00 mm (1.770/1.771 in.)

44.90 mm (1.767 in.)

0.022 mm (0.0009 in.)

0.025 mm (0.0010 in.)

Governor

Governor Cross Shaft-to-Crankcase Running Clearance 0.025/0.087 mm (0.0009/0.0034 in.)

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