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Home / Engines / Kohler Engines / Kohler CH732

Kohler Command PRO CH732 Maintenance

Engine Model: Kohler Command PRO CH732
Engine Type: 4-cycle 2-cylinder horizontal shaft air-cooled gasoline engine
Total Displacement: 46 cu.in (747 cc)
Rated Engine Power: 23.5 Hp (17.5 kW) at 3600 rpm
Fuel System: Two-barrel carburetor with fixed main jet

Engine Oil and Filters

Engine Oil Type (Summer Time) ..................... SAE 10W-30
Engine Oil Type (Winter Time) ..................... SAE 5W-30
Oil Classification (API Service) ..................... SJ or higher
Oil Capacity (w/o Filter), L (qts) ..................... 1.7 (1.8)
Oil Capacity (with New Filter), L (qts) ..................... 1.9 (2.0)
Oil Filter Part Number .............. 52 050 02-S or 12 050 01-S
Fuel Filter Part Number .............. 24 050 03-S
Primary Air Filter Part Number .............. 25 083 01-S
Secondary Air Filter Part Number .............. 25 083 04-S

Carburetor Adjustments

Main Fuel ..................... Not adjustable
Idle Fuel ..................... Not adjustable
Float Setting, mm (in) ..................... 1.6±0.5 (0.063±0.02)
Low Idle Speed, rpm ..................... 1200±75
High Idle Speed, rpm ..................... 3600±50

Ignition System

Spark Plug Type ..................... Champion RC12YC
Spark Plug Gap, mm (in) ..................... 0.76 (0.030)
Module Air Gap, mm (in) ..................... 0.20-0.31 (0.008-0.012)
Thread Size, mm (in) ..................... 14 (0.55)
Reach, mm (in) ..................... 19.1 (0.75)
Spark Plug Torque, Nm (ft-lbs) ..................... 27 (20)

Service Intervals

Change Engine Oil ..................... Every 100 hours
Clean Oil Cooler Fins ..................... Every 100 hours
Check Air Filter ..................... Every 150 hours
Change Oil Filter ..................... Every 200 hours
Replace Fuel Filter ..................... Every 200 hours
Replace Spark Plug ..................... Every 200 hours
Replace Prymary Air Filter ..................... Every 300 hours
Replace Secondary Air Filter ..................... Every 600 hours

Tightening Torque Specs

Cylinder Head Nut ..................... 16.9-35.5 Nm (12.5-26.5 ft-lbs)
Cylinder Head Bolt ..................... 22.6-41.8 Nm (16.7-30.8 ft-lbs)
Rocker Arm Screw ..................... 13.6 Nm (10 ft-lbs)
Connecting Rod Cap ..................... 13.6 Nm (10 ft-lbs)
Flywheel Retaining Screw ..................... 66.4 Nm (49.1 ft-lbs)
Intake Manifold Mounting ..................... 7.4 Nm (5.5 ft-lbs)
Carburetor Mounting Nut ..................... 6.2-7.3 Nm (4.6-5.4 ft-lbs)
Closure Plate ..................... 24.4 Nm (18.1 ft-lbs)
Oil Drain Plug ..................... 13.6 Nm (10.1 ft-lbs)
Governor Lever Nut ..................... 6.8 Nm (5.1 ft-lbs)
Ignition Module ..................... 4.0-6.2 Nm (2.9-4.6 ft-lbs)
Muffler Retaining Nut ..................... 24.4 Nm (18.1 ft-lbs)
Oil Pump Screw ..................... 10.7 Nm (7.9 ft-lbs)
Spark Plug ..................... 27 Nm (20.1 ft-lbs)

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