Service Manual

GENERAL INFORMATION 1-7
General Specifications
Item
FR651V,FR691V,FR730V, FS651V,FS691V, FS730V,
FX651V, FX691V, FX730V
Type of Engine Forced air-cooled, vertical shaft, OHV, 4-stroke gasoline engine
Cylinder Layout 90 V-Twin
Bore × Stroke 78 mm × 76 mm (3.07 in. × 2.99 in.)
Piston Displacement 726 cm³ (44.3 cu in.)
Direction of Rotation Counterclockwise facing the PTO shaft
Compression Release Automatic compression release
Low Idle Speed 1 550 r/min (rpm)
High Idle Speed 3 600 r/min (rpm)
Ignition System Transistorized-flywheel magneto
RFI Per Canada and U.S.A. requirements
Starting System:
FR and FS Models Electric starter
FX Models Shift type electric starter
Charging System:
FS and FX Models 12 V - 15 amps with regulator
FR Models 12 V - 3.6 amp without regulator
Spark Plug NGK BPR4ES
Carburetor:
FR and FS Models Float type, fixed main jet, internally vented, single barrel
FX Models Float type, fixed main jet, internally vented, two barrel
Fuel Pump Diaphragm type pulse pump
Air Cleaner:
FR Models Single stage element, dry type
FS Models Dual stage element, dry type
FX Models Dual stage element, heavy duty type
Governor Flyweight all speed governor
Lubrication System Pressure feed by positive displacement pump
Oil Filter Cartridge type full flow filter
Oil Capacity (when engine
is completely dry)
2.0 L (2.1 US qt)
Cooling System Forced air cooling by fan
Dimensions (L × W × H ):
FR Models
481 mm × 424 mm × 380 mm (18.9 in. × 16.7 in. × 15.0 in.)
FS Models 481 mm × 424 mm × 380 mm (18.9 in. × 16.7 in. × 15.0 in.)
FX Models 478 mm × 424 mm × 549 mm (18.8 in. × 16.7 in. × 21.6 in.)
Dry Weight (without muffler):
FR Models 40.0 kg (88.2 lb)
FS Models 41.0 kg (90.4 lb)
FX Models 46.0 kg (101.4 lb)
Specifications are subject to change without notice.