Kohler Command PRO ECH749 Service Manual

1.11
Section 1
Safety and General Information
1
Cylinder Head
Cylinder Head Fastener Torque
Hex Flange Nut - Torque in Two Stages ............................................... fi rst to 16.9 N·m (150 in. lb.)
fi nally to 33.9 N·m (300 in. lb.)
Head Bolt - Torque in Two Stages ......................................................... fi rst to 22.6 N·m (200 in. lb.)
fi nally to 41.8 N·m (370 in. lb.)
Max. Out-of-Flatness ...................................................................................... 0.076 mm (0.003 in.)
Rocker Arm Screw Torque ............................................................................. 11.9 N·m (105 in. lb.)
Fan/Flywheel
Fan Fastener Torque........................................................................................ 9.9 N·m (88 in. lb.)
Flywheel Retaining Screw Torque ................................................................ 71.6 N·m (52.8  . lb.)
Metal Grass Screen Fastener Torque (to Flywheel) .................................... 9.9 N·m (88 in. lb.)
Plastic Grass Screen Fastener Torque (to Fan) ........................................... 4.0 N·m (35 in. lb.)
Fuel Pump
Fuel Pump Module Baffl e Fastener Torque ................................................. 11.9 N·m (105 in. lb.)
Fuel Pump Module Fastener Torque ............................................................ 9.2 N·m (81 in. lb.)
Pulse Pump Bracket Fastener Torque .......................................................... 2.1 N·m (25 in. lb.)
Pulse Pump Fastener to Bracket Torque ...................................................... 7.3 N·m (68 in. lb.) into new holes
6.2 N·m (55 in. lb.) into used holes
Governor
Governor Cross Sha -to-Crankcase Running Clearance .......................... 0.025/0.126 mm (0.0009/0.0049 in.)
Governor Cross Sha O.D.
New ............................................................................................................ 7.949/8.000 mm (0.3129/0.3149 in.)
Max. Wear Limit ....................................................................................... 7.936 mm (0.3124 in.)
Governor Gear Sha -to-Governor Gear Running Clearance ................... 0.090/0.160 mm (0.0035/0.0063 in.)
Governor Gear Sha O.D.
New ............................................................................................................ 5.990/6.000 mm (0.2358/0.2362 in.)
Max. Wear Limit ....................................................................................... 5.977 mm (0.2353 in.)
Governor Lever Nut Torque .......................................................................... 7.1 N·m (63 in. lb.)
Governor Speed Control Assembly Torques
Assembled to Cylinder Heads ............................................................... 10.7 N·m (95 in. lb.)
Assembled to Blower Housing .............................................................. 2.8 N·m (25 in. lb.)

Kohler Command PRO ECH749 Specifications

General

Fuel System	Carburetor
Starter	Electric
Governor Type	Mechanical
Lubrication System	Full Pressure
Fuel Type	Gasoline
Crankshaft Orientation	Horizontal
Bore	3.27 in (83 mm)
Cooling System	Air
Oil Type	SAE 10W-30
Spark Plug Gap	0.030 in (0.76 mm)
Valve Clearance - Intake	0.004 - 0.006 in (0.10 - 0.15 mm)
Crankshaft Type	Varies by model
Crankshaft Thread Size	Varies by model
Crankshaft Length	Varies by model
Crankshaft Diameter	Varies by model
Type	Overhead Valve (OHV)