The John Deere 425 is a 2WD lawn and garden tractor from the 400 series of the John Deere lawn tractors. It has a V-twin 90° liquid-cooled 4-stroke Kawasaki FD620D (617 cc, 37.7) horizontal PTO-shaft engine and hydrostatic transmission. The John Deere 425 garden tractor was manufactured in Horicon, Wisconsin, USA from 1992 to 2001.
The John Deere 425 tractor used a V-twin 90° liquid-cooled four-stroke Kawasaki FD620D-AS02 gasoline engine with horizontal PTO shaft. The FD620D has OHV (overhead valve design); cast iron cylinder liners; twin barrel carburetor; electromagnetic in-line fuel pump; full transistor ignition system with fixed timing; dual stage air cleaner; mechanical governor; pressure feed lubrication system with positive displacement pump.
Bore and stroke are 76.0 mm (2.99 in) and 68.0 mm (2.68 in), respectively. Compression ratio rating is 9.0:1. The Kawasaki FD620D-AS02 develops 20 HP (14.9 kW) at 3,500 rpm of maximum horsepower.
The John Deere 425 lawn tractor is equipped with Tuff Torq K91 hydrostatic transmission (infinite forward and reverse gears), power steering (four-wheel steering was available as an option) and wet disc brakes. This tractor used open operator station. The JD 425 also features an electric starter, independent front and rear PTO-shafts with a hydraulic clutch and a 6.5-gallon (24.6 L) fuel tank.
Following attachments are available for The JD 425 tractor:
- John Deere 60-inch mower deck – mid-mount 60-inch deck (1520.0 mm) deck with 3-blades and hydraulic lift
- John Deere 54-inch mower deck – mid-mount 54-inch deck (1370.0 mm) deck with 3-blades and hydraulic lift
- John Deere 48-inch mower deck – mid-mount 48-inch deck (1210.0 mm) deck with 3-blades and hydraulic lift
- John Deere 44-inch mower deck – mid-mount 44-inch deck (1110.0 mm) deck with hydraulic lift
- John Deere blade – front-mount 1370.0 mm (54 in) blade with manual lift;
- John Deere snow blower – front-mount 1160.0 mm (46 in) single-stage snow blower with hydraulic lift;
- John Deere snow blower – front-mount 1190.0 mm (47 in) dual-stage snow blower with hydraulic lift;
John Deere 425 Specifications
| General Specifications | |
| Model | John Deere 425 |
| Length | 1,900 mm (75 in) |
| Width | Narrow Position w/23-inch tires: 1,138 mm (45 in) Wide Position w/23-inch tires 1,195 mm (47 in) 26-inch tires: 1,250 mm (49 in) |
| Height | 1,16 mm (45.9 in) |
| Wheel base | All Wheel Steer: 1,255 mm (49.4 in) Two Wheel Steer: 1,280 mm (50.4 in) |
| Weight | Two Wheel Steer: 365 kg (805 lb) All Wheel Steer: 408 kg (900 lb) |
| Fuel tank capacity | 24.6 L (6.5 gal) |
| Battery | 12V |
| Engine | |
| Engine model | Kawasaki FD620D-AS02 |
| Fuel | Gasoline |
| Displacement | 617 cc (37.7 cu-in) |
| Bore x stroke | 76.0 x 68.0 mm (2.99 x 2.68 in) |
| Power output | 20 HP (14.9 kW) at 3,500 rpm |
| Starter type | Electric starter |
| Oil type | 10W-30 |
| Oil capacity | 1.5 L (3.17 US pt) |
| Coolant capacity | 2.8 L (3 qts) |
| Spark plug | NGK: BMR4A; |
| Transmission and chassis | |
| Chassis | 4×2 (2WD) |
| Transmission type | Belt-driven hydrostatic (Tuff Torq K91) |
| Gears | Infinite forward and reverse |
| Ground speed | Forward: up to 11.7 kmh (7.3 mph) Reverse: up to 6.4 kmh (4.0 mph) |
| PTO (Power take-off shaft) | |
| PTO Type: | Front, independent with hydraulic clutch Rear, independent with hydraulic clutch |
| PTO Speed: | Front: 2000 rpm Rear: 540 rpm |
| Wheels and tires | |
| Front tires | Lawn/turf: 16×7.50-8 |
| Rear tires | Lawn/turf: 23×10.50-12 |
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