Gravely lawn tractors
Gravely 432
The Gravely 432 is a garden tractor produced from 1967 to 1972 as part of the 400 Series. It features a 14 hp Kohler K321 512cc 1-cylinder air-cooled gasoline engine, a 4-speed Swiftamatic 8 shaft-driven gear transmission with friction cone clutch, and two-wheel drive with manual steering and mechanical band brakes. The tractor has a wheelbase of 46 inches, weighs 900 lbs, and uses lawn/turf tires sized 16-6.50x6 front and 23-8.50x12 rear. Optional sleeve hitch is available. Attachments include 40" and 50" mid-mount mower decks, a 48" front-mount blade, and a 38" front-mount two-stage snow blower. Electrical system is 12 volts with negative ground.
Power14 hp
Founded40/50" deck
Model432
Technical Specifications
Detailed specifications and technical data for Gravely 432
Engine
| Type | gasoline |
|---|---|
| Model | Kohler K321 |
| Cooling | air-cooled horizontal-shaft |
| Cylinders | 1-cylinder |
| Fuel tank | 5 gal (18.9 L) |
| Rated RPM | 3600 |
| Sparkplug | Champion H-10 |
| Air cleaner | single dry element |
| Bore/Stroke | 3.25x3.50 inches (83 x 89 mm) |
| Displacement | 512 cc (31.27 ci) |
| Oil capacity | 2.5 qts (2.4 L) |
| Power (gross) | 14 hp (10.4 kW) |
| Sparkplug gap | 0.025 inches (0.635 mm) |
| Starter volts | 12 |
| Intake valve clearance | 0.009 inches (cold) (0.229 mm) |
| Exhaust valve clearance | 0.018 inches (cold) (0.457 mm) |
Chassis
| Drive | Two-wheel drive |
|---|---|
| Brakes | Mechanical band brakes |
| Steering | manual |
| Operator station | Open operator station |
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
| Notes | Garden tractors are capable of using tillers, plows, or other ground-engaging 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 | front-mount, 38 inches width (96 cm), two-stage, manual-lift, 250 lbs (113 kg) |
| 40" mid-mount mower deck | 40 inches (101 cm) width, 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) width, 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 | Swiftamatic 8 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) |
Tractor hitch
| Type | sleeve hitch (Optional) |
|---|
Serial numbers
| Location | Ahead of rear axle on left side. |
|---|