Engine Specifications; Torque Specifications - Kohler 8.5RES Service Manual

See the List of Related Materials in the Introduction
Section.

1.4 Engine Specifications

Engine Specification
Manufacturer
Model
Cycle
Number of cylinders
Compression ratio
Displacement, cc (cu. in.)
Rated power, propane fuel,
kw (HP)
Rpm
Bore x stroke, mm (in.)
Valve material
Cylinder block material
Cylinder head material
Piston rings
Crankshaft material
Main bearings: number,
type
Governor
Lubrication system
Oil capacity (w/filter), L (qt.)
Oil pressure, kPa (psi)
Fuel system
LP/natural gas minimum
supply pressure,
2
in. H O (oz./in. )
2
Battery voltage
Battery ground
Spark plug gap, mm (in.)
Ignition system
Starter motor
Cooling system
14 Section 1 Specifications
8.5 kW 12 kW
(60 Hz) (60 Hz)
Kohler
CH20 CH740
4
2
8.5:1 9.0:1
624 (38.0) 725 (44.0)
11.5 (15.4) 17.6 (23.6)
3600
77 x 67 (3.03 83 x 67 (3.27
x 2.64) x 2.64)
Steel/Stelliter
Aluminum w/cast iron liners
Aluminum
2 compression/1 oil
Heat-treated ductile iron
2, parent material
Electronic
Full pressure
1.9 (2.0) 2 (2.1)
172--241 (25--35)
LP gas or natural gas
7--11 (4--6)
12 VDC
Negative
0.51 (0.020) 0.76 (0.030)
Smart Spark
Capacitor
Capacitor
Discharge
Discharge
Electric, solenoid shift
Air-cooled

1.5 Torque Specifications

Torque Specifications, Nm (ft. lb.)
Alternator overbolts
Alternator thrubolt
Cylinder head nuts
Generator adapter screws
Muffler flange bolts
Oil filter
Spark plug
8.5/12 kW
7 (5)
40 (28)
30 (40.7)
40 (28)
24 (17.7)
5.7--9.0 (4.2--6.7)
24.4--29.8 (18--22)
TP-6196 10/09