Kawasaki engines
and genuine parts

FS Series

Smooth starts, enhanced airflow and dual-element filtration for demanding turf work.

Used for: Zero-turn riders, lawn and garden tractors, wide-area walk-behind and stand-on mowers.

Engines are for in-store pickup only. Match the complete specification to your equipment.

The product brochure presents the six carbureted models. FS730V EFI is documented separately in the retail engine catalog.

Models in this series

FS481V

603 cc (36.8 cu. in.)

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Catalog specifications

ENGINE TYPE

FORCED AIR-COOLED V-TWIN 4-CYCL VERTICAL SHAFT OHV GASOLINE EN

Number of Cylinders

2

Bore x Stroke

2.9 x 2.8 in. (73 x 72 mm)

Displacement

603 cc (36.8 cu. in.)

Compression Ratio

8.1:1

Maximum Power

14.5 hp (10.8 kW) / 3600 rpm

Maximum Torque

30.9 ft-lbs (41.9 N·m) / 1800 rpm

Oil Capacity

1.8 quart (1.7 liter) w/oil filter chan

Dry Weight

80.9 lbs (36.7 kg)

FS541V

603 cc (36.8 cu. in.)

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Catalog specifications

ENGINE TYPE

FORCED AIR-COOLED V-TWIN 4-CYCLE VERTICAL SHAFT OHV GASOLINE ENGINE

Number of Cylinders

2

Bore x Stroke

2.9 x 2.8 in. (73 x 72 mm)

Displacement

603 cc (36.8 cu. in.)

Compression Ratio

8.1:1

Maximum Power

15.0 hp (11.2 kW) / 3600 rpm

Maximum Torque

31.0 ft-lbs (42.0 N·m) / 1800 rpm

Oil Capacity

1.8 quart (1.7 liter) w/oil filter change

Dry Weight

80.9 lbs (36.7 kg)

FS600V

603 cc (36.8 cu. in.)

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Catalog specifications

ENGINE TYPE

FORCED AIR-COOLED V-TWIN 4-CYCL VERTICAL SHAFT OHV GASOLINE EN

Number of Cylinders

2

Bore x Stroke

2.9 x 2.8 in. (73 x 72 mm)

Displacement

603 cc (36.8 cu. in.)

Compression Ratio

8.1:1

Maximum Power

18.5 hp (13.8 kW) / 3600 rpm

Maximum Torque

32.3 ft-lbs (43.8 N·m) / 2200 rpm

Oil Capacity

1.8 quart (1.7 liter) w/oil filter cha

Dry Weight

80.9 lbs (36.7 kg)

FS651V

726 cc (44.3 cu. in.)

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Catalog specifications

ENGINE TYPE

FORCED AIR-COOLED V-TWIN 4-CYCL VERTICAL SHAFT OHV GASOLINE EN

Number of Cylinders

2

Bore x Stroke

3.1 x 3.0 in. (78 x 76 mm)

Displacement

726 cc (44.3 cu. in.)

Compression Ratio

8.2:1

Maximum Power

22.0 hp (16.4 kW) / 3600 rpm

Maximum Torque

39.3 ft-lbs (53.3 N·m) / 2000 rpm

Oil Capacity

2.2 quart (2.1 liter) w/oil filter chan

Dry Weight

90.4 lbs (41.0 kg)

FS691V

726 cc (44.3 cu. in.)

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Catalog specifications

ENGINE TYPE

FORCED AIR-COOLED V-TWIN 4-CYCL VERTICAL SHAFT OHV GASOLINE EN

Number of Cylinders

2

Bore x Stroke

3.1 x 3.0 in. (78 x 76 mm)

Displacement

726 cc (44.3 cu. in.)

Compression Ratio

8.2:1

Maximum Power

23.0 hp (17.2 kW) / 3600 rpm

Maximum Torque

39.6 ft-lbs (53.6 N·m) / 2200 rpm

Oil Capacity

2.2 quart (2.1 liter) w/oil filter chan

Dry Weight

90.4 lbs (41.0 kg)

FS730V

726 cc (44.3 cu. in.)

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Catalog specifications

ENGINE TYPE

FORCED AIR-COOLED V-TWIN 4-CYCL VERTICAL SHAFT OHV GASOLINE EN

Number of Cylinders

2

Bore x Stroke

3.1 x 3.0 in. (78 x 76 mm)

Displacement

726 cc (44.3 cu. in.)

Compression Ratio

8.2:1

Maximum Power

24.0 hp (17.9 kW) / 3600 rpm

Maximum Torque

40.0 ft-lbs (54.2 N·m) / 2400 rpm

Oil Capacity

2.2 quart (2.1 liter) w/oil filter chan

Dry Weight

90.4 lbs (41.0 kg)

FS730V EFI

726 cc · EFI

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Catalog specifications

Displacement

726 cc

Maximum Power

25.5 hp

Starter

Electric Bendix

Charging system

30 A

Model comparison

Base-model catalog data; individual specifications and availability require confirmation. FJ versions are compared by displacement, without assigning a horsepower rating.

Manufacturer tables & performance curves

View original tables & performance curves · 28–29

Original manufacturer catalog spread. Open the image to enlarge it.

View original tables & performance curves · 30–31

Original manufacturer catalog spread. Open the image to enlarge it.

Open the complete Kawasaki 2026 product catalog