The John Deere RX73 is a riding lawn mower with small single cylinder Kawasaki FC290V vertical engine (286 cc, 17.45 cu-in) and gear type transmission (seven forward and one reverse gear). The John Deere RX73 lawn mower was produced from 1987 to 1990.
The John Deere RX73 riding mower used an air-cooled single-cylinder four-stroke Kawasaki FC290V gasoline engine with vertical PTO shaft and electric starter. The FC290V engine has an OHV (overhead valve) design; cast-iron cylinder liner; reciprocating balancer; float type carburetor with fixed main jet; flywheel magneto transistor type ignition system.
Bore and stroke are 78.0 mm (3.07 in) and 60.0 mm (2.36 in), respectively. Compression ratio rating is 8.4:1. The Kawasaki FC290V motor produced 9.0 HP (6.7 kW;) at 3,600 rpm of horsepower and 18.7 Nm (1.91 kg·m; 13.8 ft·lb) at 2,400 rpm of torque.
The John Deere RX73 is equipped with gear type transmission (seven forward and one reverse gear), disc brakes, and manual sector and pinion steering. This lawn mower used open operator station, 3.8 L (1.0 US gal.) fuel tank, and mid-mount 760.0 mm (30 in) mower deck with manual lift and one blade.
John Deere RX73 Specifications
| General Specifications | |
| Model | John Deere RX73 |
| Length | 1,540 mm (61 in) |
| Width | 660 mm (26 in) |
| Height | 990 mm (39 in) |
| Wheel base | 1,160 mm (42 in) |
| Dry weight | 172 kg (380 lbs) |
| Fuel tank capacity | 3.8 L (1.0 US gal.) |
| Battery | 12V |
| Engine | |
| Engine model | Kawasaki FC290V |
| Fuel | Gasoline |
| Displacement | 286 cc (17.45 cu-in) |
| Bore x stroke | 78.0 x 60.0 mm (3.07 x 2.36 in) |
| Power output | 9.0 HP (6.7 KW) at 3,600 rpm |
| Starter type | Electric starter |
| Oil type | 10W-30 |
| Oil capacity | 1.1 L (1.2 US. qt) |
| Spark plug | NGK: BPR5ES; CHAMPION: RN11YC; |
| Transmission and chassis | |
| Chassis | 4×2 (2WD) |
| Transmission type | Gear transmission |
| Gears | 7 forward and 1 reverse |
| Ground speed | Forward: up to 8.7 kmh (5.4 mph) Reverse: up to 3.9 kmh (2.4 mph) |
| PTO (Power take-off shaft) | |
| PTO Type: | Middle, independent with mechanical clutch |
| Wheels and tires | |
| Front tires | Lawn/turf: 11×4.00-5 |
| Rear tires | Lawn/turf: 16×6.50-8 |
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