Kohler COMMAND CH20 Service Manual

1.8
Section 1
Safety and General Information
General Specifications¹
Power (@ 3600 RPM, exceeds Society of Automotive Engineers-Small Engine Test Code J1940.)
CH18 ........................................................................................................................................ 13.4 kW (18 HP)
CH20 ........................................................................................................................................ 14.9 kW (20 HP)
CH22 ........................................................................................................................................ 16.4 kW (22 HP)
CH23 ........................................................................................................................................ 17.2 kW (23 HP)
CH25, CH730 .......................................................................................................................... 18.6 kW (25 HP)
CH26 ........................................................................................................................................ 19.4 kW (26 HP)
CH740 ...................................................................................................................................... 20.1 kW (27 HP)
CH745 ...................................................................................................................................... 20.9 kW (28 HP)
CH750 ...................................................................................................................................... 22.3 kW (30 HP)
Peak Torque
CH18 @ 2200 RPM ................................................................................................................. 43.6 N·m (32.2 ft. lb.)
CH20 @ 2400 RPM ................................................................................................................. 44.3 N·m (32.7 ft. lb.)
CH22 @ 2400 RPM ................................................................................................................. 49.1 N·m (36.2 ft. lb.)
CH23 @ 2400 RPM ................................................................................................................. 54.1 N·m (37.9 ft. lb.)
CH25 @ 2200 RPM ................................................................................................................. 54.0 N·m (39.5 ft. lb.)
CH730 @ 2400 RPM ............................................................................................................... 55.4 N·m (40.9 ft. lb.)
CH26 @ 2800 RPM ................................................................................................................. 54.2 N·m (40.0 ft. lb.)
CH740 @ 2400 RPM ............................................................................................................... 57.3 N·m (42.3 ft. lb.)
CH745 @ 2600 RPM ............................................................................................................... 57.9 N·m (42.7 ft. lb.)
CH750 @ 2400 RPM ............................................................................................................... 64.4 N·m (47.5 ft. lb.)
Bore
CH18, CH20, CH22 (624 cc) .................................................................................................. 77 mm (3.03 in.)
CH22/23 (674 cc) .................................................................................................................... 80 mm (3.15 in.)
CH25, CH26, CH730-750 ....................................................................................................... 83 mm (3.27 in.)
Stroke
CH18-745 ................................................................................................................................ 67 mm (2.64 in.)
CH750 ...................................................................................................................................... 69 mm (2.7 in.)
Displacement
CH18, CH20, CH22 (624 cc) .................................................................................................. 624 cc (38 cu. in.)
CH22/23 (674 cc) .................................................................................................................... 674 cc (41 cu. in.)
CH25, CH26, CH730-745 ....................................................................................................... 725 cc (44 cu. in.)
CH750 ...................................................................................................................................... 755 cc (46 cu. in.)
Compression Ratio
CH18, CH20, CH22/23 ........................................................................................................... 8.5:1
CH25, CH26, CH730-745 ....................................................................................................... 9.0:1
CH750 ...................................................................................................................................... 9.4:1
Dry Weight
CH18, CH20, CH22/23 ........................................................................................................... 41 kg (90 lb.)
CH25, CH26, CH730-745 ....................................................................................................... 43 kg (94 lb.)
CH750 ...................................................................................................................................... 48 kg (105 lb.)
Oil Capacity (w/filter) - approximate,
determined by oil filter and oil cooler used ............................................................................. 1.6-1.8 L (1.7-1.9 U.S. qt.)
¹Values are in Metric units. Values in parentheses are English equivalents. Lubricate threads with engine oil
prior to assembly.

Kohler COMMAND CH20 Specifications

General

Brand	Kohler
Model	COMMAND CH20
Category	Engine
Language	English