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Gravely 430 vs Gravely 812
Verdict: Gravely 430 vs Gravely 812
The Gravely 430 and the Gravely 812 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 12 hp. Gravely 812 holds more fuel (20.1 L vs 18.9 L) for longer stints between fills. Gravely 812 is the newer design (1973 vs 1967). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
Gravely
62
Fit score
Best match
Clear
Gravely
62
Fit score
Best match
Clear
Rated power
12 hp
12 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
GravelyReference
GravelyReference
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.Reference
air-cooled horizontal-shaftReference
Steering
manualReference
—
Engine
Fuel tank
18.9 LReference
20.1 LReference
Displacement
30 ciReference
29.07 ciReference
Bore/Stroke
90 x 76 mmReference
83 x 86 mmReference
Power (gross)
8.9 kWReference
—
Air cleaner
single dry elementReference
—
Rated RPM
3600Reference
3600Reference
Starter volts
12Reference
12Reference
Sparkplug
Champion H-10Reference
—
Sparkplug gap
0.635 mmReference
0.635 mmReference
Intake valve clearance
0.229 mmReference
0.229 mmReference
Exhaust valve clearance
0.457 mmReference
0.457 mmReference
Oil capacity
4.7 LReference
5.7 LReference
Power
8.9 kWReference
8.9 kWReference
Starter
—
electricReference
Transmission
Transmission
Swiftamatic 8Reference
—
Gears
4 forward and reverseReference
8 forward and 4 reverseReference
Clutch
friction coneReference
—
Oil type
SAE 90W-EPReference
SAE30Reference
PTO & Hydraulics
Type
shaft-driven gearReference
shaft-driven gearReference
Dimensions
Wheelbase
116 cmReference
—
Weight
408 kgReference
408 kgReference
Front tire
16-6.50x6Reference
16x6.50-8Reference
Rear tire
23-8.50x12Reference
23x8.50-12Reference
Lawn/turf front
16-6.50x6Reference
16x6.50-8Reference
Lawn/turf rear
23-8.50x12Reference
23x8.50-12Reference
Length
191 cmReference
191 cmReference
Width
92 cmReference
92 cmReference
Height
109 cmReference
109 cmReference
Shipping weight
408 kgReference
408 kgReference
Clearance (front axle)
25 cmReference
—
Clearance (rear axle)
16 cmReference
—
Front tread
77 cmReference
—
Rear tread
71 cmReference
—
Gravely 430 attachments
430 Serial Numbers
Location:
Ahead of rear axle on left side.Reference
In front of, and below, air cleaner.Reference
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
Battery AH
—
43Reference
Battery Group
—
22FReference
Attachment overview
Gravely 812 attachments
812 Serial Numbers
Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.