Gravely lawn tractors
Gravely 430
The Gravely 430 is a garden tractor produced from 1967 to 1972 as part of the 400 Series. It features a 12 hp engine option from Kohler or Onan, a 4-speed Swiftamatic transmission with shaft-driven gear, and two-wheel drive with manual steering and mechanical band brakes. The tractor has a wheelbase of 46 inches and weighs 900 lbs. It offers optional sleeve hitch and various attachments including mid-mount mower decks, snowblower, and blade. Electrical system is 12 volts with negative ground.
Power12 hp
Founded40/50" deck
Model430
Technical Specifications
Detailed specifications and technical data for Gravely 430
Engine
| Onan NB | 1-cylinder, air-cooled |
|---|---|
| Fuel tank | 5 gal (18.9 L) |
| Rated RPM | 3600 |
| Sparkplug | Champion H-10 |
| Power Onan | 12 hp (8.9 kW) |
| Air cleaner | single dry element |
| Bore/Stroke | 3.25x3.37 inches (83 x 86 mm) |
| Kohler K301 | gasoline, 1-cylinder, air-cooled horizontal-shaft |
| Displacement | 476 cc (29.07 ci) |
| Oil capacity | 2.5 qts (2.4 L) |
| Power (gross) | 12 hp (8.9 kW) |
| Sparkplug gap | 0.025 inches (0.635 mm) |
| Starter volts | 12 |
| Engine options | 12HP Kohler 476cc 1-cyl gasoline, 12HP Onan 491cc 1-cyl |
| Rated RPM Onan | 3600 |
| Bore/Stroke Onan | 3.5625x3.00 inches (90 x 76 mm) |
| Displacement Onan | 491 cc (30 ci) |
| Starter volts Onan | 12 |
| Intake valve clearance | 0.009 inches Cold (0.229 mm) |
| Exhaust valve clearance | 0.018 inches Cold (0.457 mm) |
Dimensions
| Width | 36.25 inches (92 cm) |
|---|---|
| Height | 43 inches (109 cm) |
| Length | 75.5 inches (191 cm) |
| Rear tire | 23-8.50x12 |
| Wheelbase | 46 inches (116 cm) |
| Front tire | 16-6.50x6 |
| Rear tread | 28 inches (71 cm) |
| Front tread | 30.5 inches (77 cm) |
| Shipping weight | 900 lbs (408 kg) |
| Clearance (rear axle) | 6.375 inches (16 cm) |
| Clearance (front axle) | 10 inches (25 cm) |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
Production
| Type | Garden tractor |
|---|---|
| Series | 400 Series |
| Manufacturer | Gravely |
| Years produced | 1967 - 1972 |
Attachments
| 48" Blade | front-mount, 48 inches width (121 cm), 16.5 inches height (41 cm), angling 25°, 130 lbs (58 kg), manual-lift, manual-angle |
|---|---|
| 38" Snow blower | 38 inches width (96 cm), two-stage, front-mount, manual-lift, 250 lbs (113 kg) |
| 40" mid-mount mower deck | 40 inches (101 cm), total width 43.4 inches (110 cm), 3-blade, manual lift, right-discharge, cut height 1.5 to 3.5 inch (3 to 8 cm), weight 148 lbs (67 kg) |
| 50" mid-mount mower deck | 50 inches (127 cm), total width 53.4 inches (135 cm), 3-blade, manual lift, right-discharge, cut height 1.5 to 3.5 inch (3 to 8 cm), weight 205 lbs (92 kg) |
Transmission
| Type | shaft-driven gear |
|---|---|
| Gears | 4 forward and reverse |
| Notes | 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. |
| Clutch | friction cone |
| Oil type | SAE 90W-EP |
| Oil capacity | 5 qts (4.7 L) |
| Transmission | Swiftamatic 8 |
Tractor hitch
| Type | sleeve hitch Optional |
|---|
Serial Numbers
| Location | Ahead of rear axle on left side. |
|---|
Steering and Brakes
| Drive | Two-wheel drive |
|---|---|
| Brakes | Mechanical band brakes |
| Steering | manual |
| Operator station | Open operator station. |