Kohler Command PRO ECH749 Service Manual

1.14
Section 1
Safety and General Information
Stator
Mounting Screw Torque ................................................................................. 6.2 N·m (55 in. lb.) into new holes
4.0 N·m (35 in. lb.) into used holes
Valve Cover
Valve Cover Fastener Torque......................................................................... 6.2 N·m (55 in. lb.)
Valves and Valve Lifters
Hydraulic Li er to Crankcase Running Clearance .................................... 0.011/0.048 mm (0.0004/0.0019 in.)
Intake Valve Stem-to-Valve Guide Running Clearance ............................. 0.040/0.078 mm (0.0016/0.0031 in.)
Exhaust Valve Stem-to-Valve Guide Running Clearance .......................... 0.052/0.090 mm (0.0020/0.0035 in.)
Intake Valve Guide I.D.
New ............................................................................................................ 7.040/7.060 mm (0.2772/0.2780 in.)
Max. Wear Limit ....................................................................................... 7.134 mm (0.2809 in.)
Exhaust Valve Guide I.D.
New ............................................................................................................ 7.040/7.060 mm (0.2772/0.2780 in.)
Max. Wear Limit ....................................................................................... 7.159 mm (0.2819 in.)
Valve Guide Reamer Size
Standard .................................................................................................... 7.050 mm (0.2776 in.)
0.25 mm O.S. ............................................................................................. 7.300 mm (0.2874 in.)
Intake Valve Minimum Li ........................................................................... 8.07 mm (0.3177 in.)
Exhaust Valve Minimum Li ........................................................................ 8.07 mm (0.3177 in.)
Nominal Valve Seat Angle ............................................................................. 45°

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)