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Kohler 18 HP Command Series OHV Engine — 18 HP, Model# CH18S
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- OHV engine with Oil Sentry
- Cast iron cylinder liner; aluminum block
- Oil filter
- Electric start w/12V solenoid shift starter
- Dual oil drain holes
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Specifications
Specifications
Kohler 18 HP Command Series OHV Engine — 18 HP, Model# CH18S
Honda Engines, V-TWIN HORIZONTAL 688CC RQAF, Engine Displacement 688 cc, Engine Type GX Series OHV V-twin Commercial-duty, Shaft Diameter 1 in, Model# GX630RHXQAF
Honda Engines, V-TWIN HORIZONTAL 630CC RQAF1 Engine Displacement 688 cc, Engine Type GX Series OHV V-twin Commercial-duty, Shaft Diameter 1 in, Model# GX630RHXQAF1
Honda Engines, V-TWIN HORIZONTAL 630CC RQXA, Engine Displacement 688 cc, Engine Type GX Series OHV V-twin Commercial-duty, Shaft Diameter 1 in, Model# GX630RHXQXA
Engine Displacement
Same
624 cc
688 cc
688 cc
688 cc
Engine Type
Same
Command Pro V-Twin OHV
GX Series OHV V-twin Commercial-duty
GX Series OHV V-twin Commercial-duty
GX Series OHV V-twin Commercial-duty
Shaft Diameter
Same
1 in
1 in
1 in
1 in
Shaft Length
Same
3 in
2.9 in
2.9 in
2.9 in
Start Type
Same
Electric
Electric
Electric
Electric
Shaft Keyway
Same
0.25 in
0.25 in
0.25 in
0.25 in
Cylinders (qty.)
Same
2
2
2
2
Cylinder Bore
Same
Cast Iron
Integrated
Integrated
Integrated
Compression Ratio
Same
8.5:1
9.3:1
9.3:1
9.3:1
Oil Capacity
Same
2 qt
2 qt
2 qt
2 qt
Shaft Rotation (From PTO Shaft Side)
Same
Counterclockwise
Counter Clockwise
Counter Clockwise
Counter Clockwise
Ignition System
Same
Electronic
Electonic, Digital CDI W/variable Ignition Timing
Electonic, Digital CDI W/variable Ignition Timing
Electonic, Digital CDI W/variable Ignition Timing
Carburetor
Same
Smart choke
2-barrel, Fuel Cut Solenoid, Inner Vent
2-barrel, Fuel Cut Solenoid, Inner Vent
2-barrel, Fuel Cut Solenoid, Inner Vent
Lubrication System
Same
Full pressure
Full Pressure
Full Pressure
Full Pressure
Cooling System
Same
Air cooled
Air
Air
Air
Bore
Same
3.03 in
3.1 in
3.1 in
3.1 in
Stroke
Same
2.64 in
2.8 in
2.8 in
2.8 in
Air Cleaner Type
Same
Dual element
Dual Element
Dual Element
Dual Element
Throttle Control
Same
Remote
Remote
Manual
Remote
Fuel Filter
Same
In line
-
-
-
Charging System Amps
Same
15
20
17
3
Net Torque
Same
-
35.6 ft-lbs.
35.6 ft-lbs.
35.6 ft-lbs.
Crankshaft
Same
-
Q-type
Q-type
Q-type
PTO Height
Same
-
5.25 in
5.25 in
5.25 in
Net Power Output
Same
-
20.8 HP
20.8 HP
20.8 HP
Fuel Tank
Same
-
No
No
No
Low Oil Alert
Same
-
Yes
No
Yes
Governor System
Same
-
Mechanical
Mechanical
Mechanical
Choke Control
Same
-
Remote
Manual
Remote
Muffler Included
Same
-
No
No
No