Red-D-Arc ZR-8 Operator's Manual page 10

Engine
Product
Name
ZR-8
(Kohler Command
CH20S)
Gasoline Engine.
Aluminum Alloy with
Cast Iron Liners,
Electrical Ignition
Description Horsepower
20 HP
2 Cylinder
@ 3600 RPM
4 Cycle
Air-Cooled
Operating
Speeds
Full Load:
3500 RPM
High Idle:
3700 RPM
Low Idle:
2200 RPM
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9
Displacement Capacities
38.1 cu in Fuel:
(624 cc) 9 Gal (34 L)
Lubricating Oil:
2.0 Qts (1.9 L)