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| Home / Engines / Kohler Engines / Kohler CH742 |
Kohler Command PRO CH742 Maintenance
| Engine Model: Kohler Command PRO CH742 |
| Engine Type: 4-cycle V-Twin cylinder horizontal shaft gasoline engine |
| Total Displacement: 46 cu.in (747 cc) |
| Rated Engine Power: 25 Hp (18.6 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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| Engines Technical Specifications |