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Model FR541V FR600V FR651V FR691V FR730V
Image 4 Cycle Lawn Mower Engine FR541V
Shaft Type Vertical Vertical Vertical Vertical Vertical
Engine type Forced Air-Cooled V-twin 4-cycle Vertical Shaft OHV Gasoline Engine Forced Air-Cooled V-twin 4-cycle Vertical Shaft OHV Gasoline Engine Forced Air-Cooled V-twin 4-cycle Vertical Shaft OHV Gasoline Engine Forced Air-Cooled V-twin 4-cycle Vertical Shaft OHV Gasoline Engine Forced Air-Cooled V-twin 4-cycle Vertical Shaft OHV Gasoline Engine
Displacement 603 cc (36.8 cu. in.) 603 cc (36.8 cu. in.) 726 cc (44.3 cu. in.) 726 cc (44.3 cu. in.) 726 cc (44.3 cu. in.)
Number of Cylinders 2 2 2 2 2
Bore x Stroke 2.9 x 2.8 in. (73 x 72mm) 2.9 x 2.8 in. (73 x 72mm) 3.1 x 3.0 in. (78 x 76mm) 3.1 x 3.0 in. (78 x 76mm) 3.1 x 3.0 in. (78 x 76mm)
Compression Ratio 8.1:1 8.1:1 8.2:1 8.2:1 8.2:1
Oil Capacity 1.8 U.S. qt ( 1.7 liters) 1.8 U.S. qt ( 1.7 liters) 2.2 U.S. qt ( 2.1 liters) 2.2 U.S. qt ( 2.1 liters) 2.2 U.S. qt ( 2.1 liters)
Maximum Power 15.0 hp
11.2 kW/at 3,600 RPM
18.0 hp
13.4 kW/at 3,600 RPM
21.5 hp
16.0 kW/at 3,600 RPM
23.0 hp
17.2 kW/at 3,600 RPM
24.0 hp
17.9 kW/at 3,600 RPM
Maximum Torque 31.7 ft lbs
43.0 N·m/at 2,000 RPM
32.4 ft lbs
44.0 N·m/at 2,200 RPM
39.3 ft lbs
53.3 N·m/at 2,200 RPM
39.5 ft lbs
53.6 N·m/at 2,200 RPM
39.7 ft lbs
53.9 N·m/at 2,200 RPM
Dry Weight 80.9 lbs (36.7 kg) 80.9 lbs (36.7 kg) 89.0 lbs (40.4 kg) 89.0 lbs (40.4 kg) 89.0 lbs (40.4 kg)