Kohler Command CV460S

General Technical Data

Kohler CV460S Engine Specifications

Engine Model ..................... Kohler Command CV460S
Engine Type ..................... Gasoline, 4 stroke single cylinder, vertical shaft
Number of Cylinder ..................... 1
Piston Displacement, cc (cu.in) ..................... 490 (29.9)
Engine Bore, mm (in) ..................... 87.0 (3.43)
Engine Stroke, mm (in) ..................... 77.0 (3.03)
Engine Power, Hp (kW) ..................... 16.0 (11.9)
Maximum Torque, Nm (ft-lb) ..................... 36.3 (26.8)
Fast Idle Speed, rpm ..................... 2400
Low Idle Speed, rpm ..................... 1400
Compression Ratio ..................... 8.5:1
Cooling System ..................... Air Intake
Electrical System Rating, Volts ..................... 12
Ignition System Type ..................... Electronic with Spark Advance
Recommended Battery ..................... 12V-250CCA

Fuel System

Fuel System Type ..................... Carburetor
Carburetor Type ..................... Float Fixed Main Jet
Carburetor Model ..................... Walbro or Nikki
Fuel Pump ..................... Diaphragm Type Mechanical Pump
Fuel Filter ..................... In-line
Governor Type ..................... Centrifugal Mechanical Flyweight
Air Cleaner ..................... Replaceable paper element

Lubrication System

Lubrication System Type ..................... Full-Pressure
Oil Pump Type ..................... Gerotor
Oil Filter ..................... Full-flow
Oil Capacity, L (qt) ..................... 1.9 (2.0)

Dimensions

Length, mm (in) ..................... 452 (17.9)
Width, mm (in) ..................... 376 (14.9)
Height, mm (in) ..................... 312 (12.4)
Dry weight, kg (lbs) ..................... 42 (90)

Kohler CV460S Maintenance Data

Cylinder Block and Valves

Cylinder Bore I.D. (Maximum), mm (in) ..................... 87.025 (3.4262)
Cylinder Head (Max. Out-of-Flatness), mm (in) ..................... 0.076 (0.003)
Intake Valve Clearance (Cold), mm (in) ..................... 0.038-0.076 (0.0015-0.0030)
Exhaust Valve Clearance (Cold), mm (in) ..................... 0.050-0.088 (0.0020-0.0035)

Ignition System

Spark Plug ..................... Champion RC12YC
Spark Plug Thread Size, mm (in) ..................... 14 (0.55)
Spark Plug Reach, mm (in) ..................... 19.1 (0.75)
Spark Plug Gap, mm (in) ..................... 1.02 (0.040)
Ignition Module Air Gap, mm (in) ..................... 0.200-0.300 (0.008-0.012)
Spark Plug Torque, Nm ..................... 24.4-29.8

Engine Oil

Engine Oil Type (Summer) ..................... SAE 10W-30
Engine Oil Type (Winter) ..................... SAE 5W-20, 5W-30
Oil Classification ..................... SG, SH, 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)

Carburetor Adjustments

Main Fuel ..................... 2-1/2 turns
Idle Fuel ..................... 3/4 to 1 full turn
Low Idle Speed, rpm ..................... 1200±75
High Idle Speed, rpm ..................... 3600±50

Service Intervals

Service Precleaner Element ..................... Every 25 hours
Replace Air Cleaner Element ..................... Every 100 hours
Change Engine Oil ..................... Every 100 hours
Check Carburetor Adjustment ..................... Every 100 hours
Check Spark Plug Condition and Gap ..................... Every 200 hours
Change Oil Filter ..................... Every 200 hours
Replace Spark Plug ..................... Every 300 hours
Check and Adjust Valve Clearance ..................... Every 300 hours

Kohler CV460S Service Specifications

Cylinder Block

Cylinder Bore Inside Diameter (Std), mm (in) ..................... 87.000-87.025 (3.4252-3.4262)
Cylinder Bore Inside Diameter (Maximum Wear Limit), mm (in) ..................... 87.063 (3.4277)
Cylinder Bore Inside Diameter (Max. Out-of-Round), mm (in) ..................... 0.12 (0.0047)
Cylinder Bore Inside Diameter (Max. Taper), mm (in) ..................... 0.05 (0.0020)
Rocker Arm Inside Diameter (Std), mm (in) ..................... 15.837-16.127 (0.63-0.64)
Rocker Arm Inside Diameter (Maximum Wear Limit), mm (in) ..................... 16.13 (0.640)
Rocker Shaft Outside Diameter (Std), mm (in) ..................... 15.90-15.85 (0.63)
Rocker Shaft Outside Diameter (Maximum Wear Limit), mm (in) ..................... 15.727 (0.619)

Cylinder Head and Valves

Cylinder Head (Max. Out-of-Flatness), mm (in) ..................... 0.076 (0.003)
Hydraulic Valve Lifter to Crankcase Clearance, mm (in) ..................... 0.0124-0.0501 (0.0005-0.0020)
Intake Valve Stem-to-Valve Guide Clearance, mm (in) ..................... 0.038-0.076 (0.0015-0.0030)
Exhaust Valve Stem-to-Valve Guide Clearance, mm (in) ..................... 0.050-0.088 (0.0020-0.0035)
Intake Valve Guide Inside Diameter (Std), mm (in) ..................... 7.038-7.058 (0.2771-0.2779)
Intake Valve Guide Inside Diameter (Maximum Wear Limit), mm (in) ..................... 7.134 (0.2809)
Exhaust Valve Guide Inside Diameter (Std), mm (in) ..................... 7.038-7.058 (0.2771-0.2779)
Exhaust Valve Guide Inside Diameter (Maximum Wear Limit), mm (in) ..................... 7.159 (0.2819)
Valve Guide Reamer Size (Std), mm (in) ..................... 7.048 (0.2775)
Valve Guide Reamer Size (0.25 Oversize), mm (in) ..................... 7.298 (0.2873)
Intake Valve Minimum Lift, mm (in) ..................... 8.96 (0.353)
Exhaust Valve Minimum Lift, mm (in) ..................... 9.14 (0.360)
Nominal Valve Seat Angle, deg ..................... 45

Piston and Piston Rings

Piston to Piston Pin (selective fit), mm (in) ..................... 0.006-0.017 (0.0002-0.0007)
Piston Pin Bore Inside Diameter (Std), mm (in) ..................... 19.006-19.012 (0.7483-0.7485)
Piston Pin Bore Inside Diameter (Maximum Wear Limit), mm (in) ..................... 19.025 (0.7490)
Piston Pin Outside Diameter (Std), mm (in) ..................... 18.995-19.000 (0.7478-0.7480)
Piston Pin Outside Diameter (Maximum Wear Limit), mm (in) ..................... 18.994 (0.74779)
Top Compression Ring to Groove Side Clearance, mm (in) ..................... 0.034-0.100 (0.0013-0.0039)
Middle Compression Ring to Groove Side Clearance, mm (in) ..................... 0.040-0.080 (0.0015-0.0032)
Oil Control Ring to Groove Side Clearance, mm (in) ..................... 0.036-0.186 (0.0014-0.0073)
Top Compression Ring End Gap Bore, mm (in) ..................... 0.25-0.50 (0.010-0.020)
Center Compression Ring End Gap Bore, mm (in) ..................... 0.25-0.51 (0.0010-0.020)
Oil Control Ring End Gap, mm (in) ..................... 0.25-1.02 (0.010-0.040)
Piston Thrust Face Outside Diameter (Std), mm (in) ..................... 86.941-86.959 (3.4229-3.4236)
Piston Thrust Face Outside Diameter (Maximum Wear Limit), mm (in) ..................... 86.814 (3.4179)
Piston Thrust Face to Cylinder Bore Clearance, mm (in) ..................... 0.041-0.044 (0.0016-0.0017)

Crankshaft

Crankshaft End Play (free), mm (in) ..................... 0.0575-0.4925 (0.0022-0.0193)
Crankshaft End Play (thrust bearing with shims), mm (in) ..................... 0.050-0.530 (0.0020-0.0209)
Crankshaft Bore in Crankcase Inside Diameter (Std), mm (in) ............... 44.965-44.990 (1.7702-1.7712)
Crankshaft Bore in Crankcase (Wear Limit), mm (in) ..................... 44.9758-45.0012 (1.7707-1.7717)
Crankshaft Bore in Crankcase Clearance (Std), mm (in) ..................... 0.0300-0.0770 (0.0011-0.0030)
Crankshaft Bore in Oil Pan Inside Diameter (Std), mm (in) ..................... 41.965-42.003 (1.6521-1.6536)
Crankshaft Bore in Oil Pan Inside Diameter (Wear Limit), mm (in) ........ 41.9760-42.0141 (1.6526-1.6541)
Crankshaft Bore in Oil Pan Clearance (Std), mm (in) ..................... 0.0300-0.0880 (0.0011-0.0034)
Flywheel End Main Bearing Journal Outside Diameter (Std), mm (in) ....... 44.913-44.935 (1.7682-1.7691)
Flywheel End Main Bearing Journal Outside Diameter (Wear Limit), mm (in) .............. 44.84 (1.765)
Flywheel End Main Bearing Journal (Max. Taper), mm (in) ..................... 0.022 (0.0009)
Flywheel End Main Bearing Journal (Max. Out-of-Round), mm (in) ..................... 0.025 (0.0010)
Oil Pan End Main Bearing Journal Outside Diameter (Std), mm (in) ......... 41.915-41.935 (1.6502-1.6510)
Oil Pan End Main Bearing Journal Outside Diameter (Wear Limit), mm (in) ..................... 41.86 (1.648)
Oil Pan End Main Bearing Journal (Max. Taper), mm (in) ..................... 0.020 (0.0008)
Oil Pan End Main Bearing Journal (Max. Out-of-Round), mm (in) ..................... 0.025 (0.0010)
Connecting Rod Journal Outside Diameter (Std), mm (in) ..................... 38.958-30.970 (1.5338-1.5343)
Connecting Rod Journal Outside Diameter (Wear Limit), mm (in) ..................... 38.94 (1.5328)
Connecting Rod Journal (Max. Taper), mm (in) ..................... 0.012 (0.0005)
Connecting Rod Journal (Max. Out-of-Round), mm (in) ..................... 0.025 (0.0010)
Crankshaft PTO End, Crank in Engine, mm (in) ..................... 0.30 (0.012)
Crankshaft Entire Crank, in V-Blocks, mm (in) ..................... 0.10 (0.0039)

Camshaft

Camshaft End Play (free), mm (in) ..................... 0.088-0.393 (0.003-0.015)
Camshaft End Play End Play (with shims), mm (in) ..................... 0.076-0.127 (0.003-0.005)
Camshaft Clearance, mm (in) ..................... 0.025-0.105 (0.0010-0.0041)
Camshaft Bore Inside Diameter (Std), mm (in) ..................... 20.000-20.025 (0.7874-0.7884)
Camshaft Bore Inside Diameter (Wear Limit), mm (in) ..................... 20.038 (0.7889)
Camshaft Bearing Surface Outside Diameter (Std), mm (in) ............ 19.962-19.975 (0.7859-0.7864)
Camshaft Bearing Surface Outside Diameter (Wear Limit), mm (in) ..................... 19.959 (0.7858)

Connecting Rod

Connecting Rod to Crankpin Clearance (Std), mm (in) ..................... 0.030-0.055 (0.0012-0.0022)
Connecting Rod to Crankpin Clearance (Maximum Wear Limit), mm (in) ..................... 0.07 (0.0025)
Connecting Rod to Crankpin Side Clearance, mm (in) ..................... 0.18-0.41 (0.007-0.016)
Connecting Rod to Piston Pin Clearance, mm (in) ..................... 0.015-0.028 (0.0006-0.0011)
Piston Pin End Inside Diameter (Std), mm (in) ..................... 19.015-19.023 (0.7486-0.7489)
Piston Pin End Inside Diameter (Maximum Wear Limit), mm (in) ..................... 19.036 (0.7495)

Kohler CV460S Tightening Torque Specs

Cylinder Head, Nm (ft-lbs) ..................... 20.0-40.7 (14.8-30.1)
Rocker Pedestal, Nm (ft-lbs) ..................... 11.3 (8.3)
Rocker Arm Screw, Nm (ft-lbs) ..................... 11.3 (8.4)
Rocker Arm Pivot Stud Torque, Nm (ft-lbs) ..................... 11.3 (8.4)
Connecting Rod Bolt, Nm (ft-lbs) ..................... 11.3-22.7 (8.4-16.7)
Flywheel Retaining Screw, Nm (ft-lbs) ..................... 66.4 (49.1)
Fuel Bowl Retaining Screw, Nm (ft-lbs) ..................... 5.1-6.2 (3.8-4.6)
Valve Cover, Nm (ft-lbs) ..................... 10.7 (7.9)
Starter Mounting Screw, Nm (ft-lbs) ..................... 15.3 (11.3)
Fan, Nm (ft-lbs) ..................... 9.9 (7.3)
Fuel Pump, Nm (ft-lbs) ..................... 9.0 (6.7)
Spark Plug, Nm (ft-lbs) ..................... 24.4-29.8 (18-22)
Ignition Module, Nm (ft-lbs) ..................... 6.2 (4.6)
Muffler Retaining Nuts, Nm (ft-lbs) ..................... 24.4 (18.0)
Oil Filter, Nm (ft-lbs) ..................... 10.4-12.7 (7.5-9.2)
Oil Pan, Nm (ft-lbs) ..................... 24.4 (18.0)
Oil Pump Cover, Nm (ft-lbs) ..................... 6.2 (4.6)
Governor Control Lever, Nm (ft-lbs) ..................... 9.9 (7.3)