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Kohler Courage SV590S

General Technical Data

Kohler SV590S Engine Specifications

Engine Model ................... Kohler Courage SV590S
Engine Type ................... Gasoline, single-cylinder, vertical shaft air-cooled
Number of Cylinders ................... 1
Displacement, cc (cu.in) ................... 597 (36.4)
Engine Bore, mm (in) ................... 94.0 (3.70)
Engine Stroke, mm (in) ................... 86.0 (3.38)
Rated Engine Power, hp (kW) ................... 19.0 (14.1)
Rated Engine Speed, rpm ................... 3600
Maximum Torque, Nm (ft-lbs) ................... 42.3 (31.2)
Torque Speed, rpm ................... 2600
Compression ................... 8.5:1
Lubrication ................... Full pressure
Oil filter ................... Full-flow type
Air Cleaner ................... Replaceable, paper element
Oil Capacity, L (qts) ................... 1.9 (2.0)
Electrical System Rating, Volts ................... 12
Starter Type ................... Electric
Battery Rating ................... 12V, 400 CCA

Fuel System

Fuel System Type ................... Carburetor
Carburetor Model ................... Walbro
Carburetor Type ................... Fixed main jet
Fuel Pump ................... Pulse type
Fuel Filter ................... In-line
Governor ................... Mechanical

Dimensions

Length, mm (in) ................... 491 (19.4)
Width, mm (in) ................... 415 (16.4)
Height, mm (in) ................... 326 (12.9)
Net weight, kg (lbs) ................... 36.0 (80.0)

Kohler SV590S Maintenance Data

Cylinder Block and Valves

Cylinder Bore I.D. (Maximum), mm (in) ................... 94.073 (3.704)
Cylinder Head (Max. Out-of-Flatness), mm (in) ................... 0.8 (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)

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 (with Filter), L (qts) ................... 1.5 (1.6)

Carburetor Adjustment

Main Fuel ................... Not adjustable
Idle Fuel ................... Adjust by needle and spring with limiter cap
Low Idle Speed, rpm ................... 1500±75
High Idle Speed, rpm ................... 3600±50

Ignition System

Spark Plug Type ................... Champion RC12YC or QC12YC
Spark Plug Gap, mm (in) ................... 0.76 (0.030)
Module Air Gap, mm (in) ................... 0.203-0.305 (0.008-0.012)
Thread Size, mm (in) ................... 14 (0.55)
Reach, mm (in) ................... 19.1 (0.75)
Spark Plug Torque, Nm (ft-lbs) ................... 24-30 (18-22)

Service Intervals

Service Precleaner Element ................... Every 25 hours
Replace Air Cleaner Element ................... Every 100 hours
Change Engine Oil ................... Every 100 hours
Change Oil Filter ................... Every 100 hours
Clean Cooling Areas ................... Every 100 hours
Replace Fuel Filter ................... Every 100 hours
Check Carburetor Adjustment ................... Every 100 hours
Check Spark Plug Gap ................... Every 200 hours
Replace Spark Plug ................... Every 400 hours
Check and Adjust Valve Clearance ................... Every 400 hours

Kohler SV590S Service Specifications

Cylinder Block

Cylinder Bore Inside Diameter (Std) ................... 94.010-94.035 mm (3.701-3.702 in.)
Cylinder Bore Inside Diameter (Wear Limit) ................... 94.073 mm (3.704 in.)
Cylinder Bore (Max. Taper) ................... 0.05 mm (0.002 in.)
Cylinder Bore (Max. Out of Round) ................... 0.12 mm (0.0047 in.)
Cylinder Head (Max. Out-of-Flatness) ................... 0.8 mm (0.003 in.)
Cam Gears End Play ................... 0.5-1.5 mm (0.019-0.059 in.)
Cam Gears Running Side Clearance ................... 0.02-0.13 mm (0.001-0.005 in.)
Cam Gear-to-Camshaft Running Assembly ................... 0.02-0.10 mm (0.001-0.004 in.)
Connecting Rod-to-Crankpin Clearance ................... 0.03-0.055 mm (0.0012-0.0022 in.)
Connecting Rod-to-Crankpin Side Clearance ................... 0.25-0.59 mm (0.0098-0.0232 in.)
Connecting Rod-to-Piston Pin Clearance ................... 0.015-0.028 mm (0.0006-0.0011 in.)

Valves and Valve Lifters

Valve Lash ................... 0.076 mm (0.003 in.)
Intake Valve Minimum Lift ................... 8.9 mm (0.350 in.)
Exhaust Valve Minimum Lift ................... 8.9 mm (0.350 in.)
Nominal Valve Seat Angle ................... 45 degrees
Intake Valve Stem-to-Valve Guide Clearance ................... 0.038-0.076 mm (0.0015-0.003 in.)
Exhaust Valve Stem-to-Valve Guide Clearance ................... 0.050-0.88 mm (0.0020-0.0035 in.)
Intake Valve Guide Inside Diameter ................... 6.038-6.058 mm (0.2377-0.2385 in.)
Intake Valve Stem Diameter ................... 5.982-6.0 mm (0.2355-0.2362 in.)
Exhaust Valve Guide Inside Diameter ................... 6.038-6.058 mm (0.2377-0.2385 in.)
Exhaust Valve Stem Diameter ................... 5.970-5.988 mm (0.235-0.2357 in.)

Crankshaft

Crankshaft End Play (Free) ................... 0.225-1.025 mm (0.0089-0.040 in.)
Crankshaft Bore in Crankcase Inside Diameter ................... 41.965-41.990 mm (1.6521-1.6531 in.)
Crankshaft Bore in Closure Plate Inside Diameter ................... 44.965-44.990 mm (1.7703-1.7713 in.)
Flywheel End Main Bearing Journal Outside Diameter ................... 44.913-44.935 mm (1.7682-1.7691 in.)
Flywheel End Main Bearing Journal (Max. Taper) ................... 0.0220 mm (0.0009 in.)
Flywheel End Main Bearing Journal (Max. Out of Round) ................... 0.025 mm (0.001 in.)
PTO End Main Bearing Journal Outside Diameter ................... 41.913-41.935 mm (1.6501-1.6510 in.)
PTO End Main Bearing Journal (Max. Taper) ................... 0.020 mm (0.0008 in.)
PTO End Main Bearing Journal (Max. Out of Round) ................... 0.025 mm (0.001 in.)
Crankshaft Bore in Closure Plate Clearance ................... 0.03-0.077 mm (0.0012-0.003 in.)
Crankshaft Bore in Crankcase Clearance ................... 0.03-0.077 mm (0.0012-0.003 in.)
Connecting Rod Journal Outside Diameter ................... 40.982-41.000 mm (1.6134-1.6141 in.)
Connecting Rod Journal (Max. Taper) ................... 0.012 mm (0.0005 in.)
Connecting Rod Journal (Max. Out of Round) ................... 0.025 mm (0.001 in.)
Crankshaft T.I.R (PTO End, Crankshaft in Engine) ................... 0.15 mm (0.0059 in.)
Crankshaft T.I.R (Entire Crankshaft, in V-Blocks) ................... 0.10 mm (0.0039 in.)
Crankshaft Eccentrics Outside Diameter ................... 66.940-66.970 mm (2.6354-2.6366 in.)
Balance Weight Bearing Surface Inside Diameter ................... 67.011-67.086 mm (2.6382-2.6412 in.)
Guide Pin Outside Diameter ................... 11.950-11.975 mm (0.4705-0.4715 in.)
Guide Shoe Width ................... 17.85-17.90 mm (0.703-0.705)
Guide Shoe Hole Inside Diameter ................... 12.000-12.025 mm (0.4724-0.4734 in.)

Piston and Piston Rings

Piston Pin Bore Inside Diameter ................... 22.006-22.012 mm (0.8685-0.8666 in.)
Piston Pin Outside Diameter ................... 21.995-22.0 mm (0.8659-0.8661 in.)
Piston Pin End Inside Diameter ................... 22.015-22.023 mm (0.8667-0.8670 in.)
Top Compression Ring-to-Groove Side Clearance ................... 0.04 mm (0.0016 in.)
Middle Compression Ring-to-Groove Side Clearance ................... 0.04 mm (0.0016 in.)
Top Compression Ring End Gap ................... 0.15-0.40 mm (0.006-0.016 in.)
Middle Compression Ring End Gap ................... 0.30-0.55 mm (0.012-0.022 in.)
Piston Thrust Face Outside Diameter ................... 93.928-93.942 mm (3.6980-3.6985 in.)
Piston Thrust Face-to-Cylinder Bore Clearance ................... 0.0875 mm (0.0034 in.)

Kohler SV590S Tightening Torque Specifications

Cylinder Head, Nm (ft-lb) ................... 20.5-41.0 (15-30)
Rocker Arm Pivot Stud ................... 13.5 (10.0)
Rocker Arm Adjustment Nut Set Screw ................... 5.5 (4.2)
Flywheel Retaining Screw ................... 66.5 (49.0)
Connecting Rod Cap ................... 11.5 (8.5)
Cam Lever ................... 7.5 (5.4)
Oil Drain Plug ................... 14.0 (10.4)
Fuel Bowl Retaining Screw Torque ................... 5.1-6.2 (3.8-4.6)
Balance Weight Screw ................... 10.0 (7.5)
Air Cleaner Base Mounting Screw ................... 8.0 (5.8)
Electric Starter Mounting Nut ................... 3.6 (2.7)
Ignition Module ................... 6.0 (4.5)
Muffler Retaining Nuts ................... 24.4 (18.0)
Oil Filter ................... 10-13 (7.5-10.1)
Oil Pump Mounting Screw ................... 4.0 (2.9)
Rectifier-Regulator Mounting Screw ................... 6.0 (4.5)
Speed Control Bracket Assembly ................... 11.0 (8.2)
Governor Control Lever ................... 7.0-8.5 (5.2-6.3)