Kohler CH1000

Kohler CH1000The Kohler CH1000 is a 999 cc, (61.0 cu·in) V-twin air-cooled four-stroke internal combustion gasoline engine from the Command PRO series, manufactured by Kohler Co.

The Kohler CH1000 engine has an OHV (overhead valve) design, an aluminum block with cast iron cylinder liners, horizontal PTO-shaft, pressurized lubrication system. This engine is equipped with a two-barrel, side-draft carburetor with fixed main jets and the CDI/MDI or Digital Spark Advance Ignition (DSAI) ignition systems.

Cylinder bore and piston stroke are 90.0 mm (3.54 in) and 78.5 mm (3.09 in), respectively. Compression ratio rating is 8.8:1.

The CH1000 engine produces 37.5 PS (27.6 KW; 37.0 HP) at 3,600 rpm of horsepower and 75.0 Nm (7.6 kg·m; 55.3 ft·lb) at 3,400 rpm of torque.

The breakdown of the engine code is as follows:

  • C – Command series
  • H – Horizontal PTO shaft
  • 1000 – Numerical designation

General information

Engine Specifications
ModelCommand PRO CH1000
Type4-stroke, OHV, V-twin
Displacement999 cm 3 (61.0 cu-in)
Max. horsepower 37.5 PS (27.6 KW; 37.0 HP) at 3,600 rpm
40.5 PS (29.8 KW; 40.0 HP) at 3,600 rpm
Max. torque75.0 Nm (7.6 kg·m; 55.3 ft·lb) at 3,400 rpm
Fuel systemTwo-barrel, side-draft carburetor with fixed main jets
Cooling systemForced-air
Ignition systemCDI/MDI or Digital Spark Advance Ignition (DSAI)
Lubricating systemPressurized lubrication
Starting systemElectric starter
Fuel usedUnleaded gasoline (octane number 86 or higher)
Dimensions (L x W X H)388 x 484 x 699 mm (15.3 x 19.0 x 27.5 in)
Dry weight59.0 kg (132.0 lbs)

Cylinder Block and Head

CH980

Cylinder block
Compression ratio:8.8:1
Bore x Stroke90.0 mm X 78.5 mm (3.54 x 3.09 in)
Sleeve internal diameter90.000-90.0025 mm (3.5433-3.5434 in)
Number of piston rings (compression / oil):2 / 1
Piston style A
Thrust face outer diameter89.953-89.967 mm (3.5414-3.542 in)
Piston pin outer diameter18.995-19.000 mm (0.7478-0.7480 in)
Ring-to-groove side clearance:Top0.040-0.080 mm (0.0016-0.0031 in)
Second0.040-0.080 mm (0.0016-0.0031 in)
Oil0.030-0.190 mm (0.0012-0.0075 in)
Ring end gap:Top0.300-0.550 mm (0.0118-0.0217 in)
Second0.300-0.550 mm (0.0118-0.0217 in)
Piston style B
Thrust face outer diameter89.972 mm (3.5422 in)
Piston pin outer diameter19.995-20.000 mm (0.7872-0.7874 in)
Ring-to-groove side clearance:Top0.030-0.070 mm (0.001-0.0026 in)
Second0.030-0.070 mm (0.001-0.0026 in)
Oil0.060-0.190 mm (0.0022-0.0073 in)
Ring end gap:Top0.125-0.304 mm (0.0049-0.0120 in)
Second0.900-1.179 mm (0.0345-0.0464 in)
Crankshaft main journal diameter:44.978-45.000 mm (1.7708-1.7717 in)
Crankpin journal diameter:43.982-44.000 mm (1.7316-1.7323 in)
Cylinder Head
Valve Arrangement:OHV, gear drive
Valves:4 (2 per cylinder)
Valve head diameter:INTAKE38.625-38.685 mm (1.5207-1.523 in)
EXHAUST31.625-31.825 mm (1.2451-1.253 in)
Stem outer diameter:INTAKE6.982-7.000 mm (0.2749-0.2756 in)
EXHAUST6.970-6.988 mm (0.2744-0.2751 in)
Camshaft journal diameter:19.962-19.975 mm (0.7859-0.7864 in)

Tightening torque specs

Tightening torque specs
Cylinder head Bolt (torque in 2 increments):
Step 1: 23.7 Nm (2.4 kgf·m; 17.5 lb·ft)
Step 2: 46.9 Nm (4.8 kgf·m; 34.6 lb·ft)
Connecting rod cap11.0 Nm (1.1 kgf·m; 8.1 lb·ft)
Flywheel69.8 Nm (7.1 kgf·m; 51.5 lb·ft)
Spark plug27 Nm (2.75 kg·m; 20.0 ft·lb)

Service Information

Oil system
Oil typeAPI SJ or higher
Recommended oilSAE 10W-30, KOHLER PRO 10W-50
Oil capacity W/o oil filter: 1.9 liters (2.0 US.qts, 1.7 Imp. qts)
With oil filter: 2.6 liters (2.75 US.qts, 2.3 Imp. qts)
Ignition system
Spark plugChampion RC12YC
Spark plug gap0.76 mm (0.030 in)
Ignition module air gap0.280-0.330 mm (0.011-0.013 in)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

Be the first to comment

Leave a Reply

Your email address will not be published.


*