Gravely lawn tractors 424
Power
10 hp
Production
1967-1972
Engine
1-cylinder
Transmission
Swiftamatic 8
Weight
900 lbs [408 kg]
Drive
2WD
From the same series:
Introduction
Gravely 424 Garden Tractor
Produced by Gravely between 1967 and 1972, the 424 is a garden tractor designed for residential and light-duty landscape maintenance tasks.
Engine and Performance
The tractor is powered by an air-cooled, single-cylinder Onan NB engine with a displacement of 491 cc (30 ci). It generates 10 hp (7.5 kW) at a rated speed of 3600 RPM. Maintenance requirements include specific valve clearances, set at 0.009 inches for intake and 0.018 inches for exhaust when cold, using a Champion H-10 sparkplug.
Transmission and Drivetrain
Equipped with the Swiftamatic 8 transmission, the unit features a shaft-driven gear system providing 4 forward and 4 reverse gears. It utilizes a friction cone clutch and requires SAE 90W-EP oil. The system includes a two-speed shift-on-the-move capability that affects both transmission and PTO speeds, while an additional two-speed range is available when the tractor is stationary. Directional control is managed by a right-hand clutch lever.
Mechanical and Dimensions
The 424 features a two-wheel-drive configuration with manual steering and mechanical band brakes. With a wheelbase of 46 inches (116 cm) and an overall length of 75.5 inches (191 cm), the tractor has a shipping weight of approximately 900 lbs (408 kg). It is fitted with 16-6.50x6 front tires and 23-8.50x12 rear tires, providing a front clearance of 10 inches and rear axle clearance of 6.375 inches.
Conclusion
The Gravely 424 is a compact, gear-driven garden tractor suited for landowners requiring a versatile machine for mowing with 40 or 50-inch decks and general property upkeep.
Production Information of Gravely lawn tractors, 424
- Garden tractor
| Manufacturer | Gravely |
|---|
Dimension and Tires Information of Gravely lawn tractors, 424
| Clearance (rear axle) | 6.375 inches [16 cm] |
|---|---|
| Wheelbase | 46 inches [116 cm] |
| Shipping weight | 900 lbs [408 kg] |
| Height | 43 inches [109 cm] |
| Length | 75.5 inches [191 cm] |
| Front tread | 30.5 inches [77 cm] |
| Clearance (front axle) | 10 inches [25 cm] |
| Width | 36.25 inches [92 cm] |
| Rear tread | 28 inches [71 cm] |
| Lawn/turf front | 16-6.50x6 |
|---|---|
| Lawn/turf rear | 23-8.50x12 |
Engine Specifications of Gravely lawn tractors, 424
- Onan NB
- Air-cooled
- 1-cylinder
| Displacement | 491 cc [30 ci] |
|---|---|
| Starter volts | 12 |
| Sparkplug | Champion H-10 |
| Bore/Stroke | 3.5625x3.00 inches [90 x 76 mm] |
| Power | 10 hp [7.5 kW] |
| Rated RPM | 3600 |
| Starter volts | 12 |
| Rated RPM | 3600 |
| Exhaust valve clearance | 0.018 inches (cold) [0.457 mm] |
| Intake valve clearance | 0.009 inches (cold) [0.229 mm] |
| Sparkplug gap | 0.025 inches [0.635 mm] |
Transmission Information of Gravely lawn tractors, 424
Transmission variants 1
- Two-speed shift-on-the-move affects transmission and PTO speed. Additional two-speed range for transmission can be shifted only when stopped. Right-hand directional clutch lever controls forward and reverse.
| Transmission | Swiftamatic 8 |
|---|---|
| Oil capacity | 5 qts [4.7 L] |
| Clutch | Friction cone |
| Type | Shaft-driven gear |
| Oil type | SAE 90W-EP |
| Gears | 4 forward and reverse |
Mechanical Specs of Gravely lawn tractors, 424
- Two-wheel drive
- Open operator station.
- Mechanical band brakes
| Steering | Manual |
|---|
Three-Point Hitch of Gravely lawn tractors, 424
| Type(optional) | Sleeve hitch |
|---|
Electrical System of Gravely lawn tractors, 424
| Ground | Negative |
|---|---|
| Battery volts | 12 |
Where it sits
With 10 HP, the Gravely lawn tractors 424 sits just below 430 (12 HP) in Gravely lawn tractors's range. Its power puts it in the 87th percentile of 1960s models in our database (550 machines).
Frequently asked questions
How much horsepower does the Gravely lawn tractors 424 have?
The Gravely lawn tractors 424 delivers 10 HP.
What years was the Gravely lawn tractors 424 produced?
The Gravely lawn tractors 424 was produced in 1967-1972.
What engine does the Gravely lawn tractors 424 have?
The Gravely lawn tractors 424 is powered by a 1-cylinder engine.
What transmission does the Gravely lawn tractors 424 use?
The Gravely lawn tractors 424 uses a Swiftamatic 8 transmission.
How much does the Gravely lawn tractors 424 weigh?
The Gravely lawn tractors 424 weighs 900 lbs [408 kg].
Is the Gravely lawn tractors 424 4WD?
The Gravely lawn tractors 424 is available in 2WD.