Gravely 432
The Gravely 432 is a tractor produced by Gravely Lawn Tractors. It is equipped with a 512 cc 31.27 ci engine. The listed engine power is Gasoline (gross): 14 hp / 10.4 kW. Transmission: Swiftamatic 8. Operating weight: 900 lbs 408 kg.
Engine Power
Gasoline (gross): 14 hp / 10.4 kW
Fuel & Capacities
5 gal
18.9 L
Transmission
Swiftamatic 8
Operating Weight
900 lbs
408 kg
Overview
![]() | 1967 - 1972
400 SeriesGarden tractor
400 Series
Garden tractor |
|---|
Production | |
|---|---|
Manufacturer | Gravely |
Garden tractor | |
Gravely 432 Engine | |
|---|---|
14HP Kohler 512cc 1-cyl gasoline | |
Fuel tank | 5 gal
18.9 L |
Engine details ... | |
Gravely 432 Transmission | |
|---|---|
4-speed gear | |
Transmission details ... |
Mechanical | |
|---|---|
Two-wheel drive | |
Steering | manual |
Mechanical band brakes | |
Open operator station. | |
Tractor hitch | |
|---|---|
Type | sleeve hitch OptOptional |
Dimensions & Tires | |
|---|---|
Wheelbase | 46 inches
116 cm |
Weight | 900 lbs
408 kg |
Front tire | 16-6.50x6 |
Rear tire | 23-8.50x12 |
Full dimensions and tires ... | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
![]() | |
Owner's Manual 424 - 430 - 432 (14535P1) published in 1969 | |
Service Manual 424, 430, 432, and 450 (14535P1) published in 1972 | |
Gravely '70 published in 1970 | |
The Great Gravely Durability published in 1972 |
Engine
Engine Detail — 512 cc / 31.27 ci Gasoline
Manufacturer | Kohler K321 |
Fuel Type | Gasoline |
Configuration | 1-cylinder, air-cooled horizontal-shaft |
Displacement | 512 cc
31.27 ci |
Bore/Stroke | 3.25x3.50 inches
83 x 89 mm |
Power (gross) | 14 hp
10.4 kW |
Air cleaner | single dry element |
Rated RPM | 3600 |
Starter volts | 12 |
Sparkplug | Champion H-10 |
Sparkplug gap | 0.025 inches
0.635 mm |
Intake valve clearance | 0.009 inches (cold)
0.229 mm |
Exhaust valve clearance | 0.018 inches (cold)
0.457 mm |
Oil capacity | 2.5 qts
2.4 L |
Transmission
Transmission — Swiftamatic 8
Transmission | Swiftamatic 8 |
Type | shaft-driven gear |
Gears | 4 forward and reverse |
Clutch | friction cone |
Oil capacity | 5 qts
4.7 L |
Oil type | SAE 90W-EP |
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. | |
Dimensions
Gravely 432 Tires | |
|---|---|
Lawn/turf front | 16-6.50x6 |
Lawn/turf rear | 23-8.50x12 |
Dimensions | |
|---|---|
Wheelbase | 46 inches
116 cm |
Length | 75.5 inches
191 cm |
Width | 36.25 inches
92 cm |
Height | 43 inches
109 cm |
Shipping weight | 900 lbs
408 kg |
Clearance (front axle) | 10 inches
25 cm |
Clearance (rear axle) | 6.375 inches
16 cm |
Front tread | 30.5 inches
77 cm |
Rear tread | 28 inches
71 cm |
Attachments
Attachment overview | |
|---|---|
40" mid-mount mower deck | |
50" mid-mount mower deck | |
Snowblower | |
Blade | |
Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments. |
Photos
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Gravely Lawn Tractors Gravely 432.
Estimated Continuous Field Runtime: 6.9 hrs
Approximately 6.9 hours of continuous field operation at ~75% rated power on a full tank (5 gal / 18.9 L).
Estimated 75% Load Fuel Burn~0.7 gal/hr (2.8 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Gravely Lawn Tractors Gravely 432 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Gravely Lawn Tractors Gravely 432.
Converted Equivalents:
Horsepower (HP)14 hp
Kilowatts (kW)10.4 kW
Metric Horsepower (PS / CV)14.2 PS
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