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Gravely 1238-G vs Gravely 812
Verdict: Gravely 1238-G vs Gravely 812
The Gravely 1238-G 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 1238-G is the lighter machine (212 kg vs 408 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely 812 holds more fuel (20.1 L vs 6.6 L) for longer stints between fills. Gravely 1238-G is the newer design (1988 vs 1973). 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
Gravely (a part of Ariens)Reference
GravelyReference
air-cooled vertical-shaftReference
air-cooled horizontal-shaftReference
Engine
Fuel tank
6.6 LReference
20.1 LReference
Displacement
28.4 ciReference
29.07 ciReference
Bore/Stroke
87 x 78 mmReference
83 x 86 mmReference
Power (gross)
8.9 kWReference
—
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
1.4 LReference
5.7 LReference
Power
—
8.9 kWReference
Rated RPM
—
3600Reference
Sparkplug gap
—
0.635 mmReference
Intake valve clearance
—
0.229 mmReference
Exhaust valve clearance
—
0.457 mmReference
Transmission
Gears
6 forward and 1 reverseReference
8 forward and 4 reverseReference
Oil type
—
SAE30Reference
PTO & Hydraulics
Mid PTO
independentReference
—
Clutch
manualReference
—
Mid PTO Type
pulleyReference
—
Dimensions
Wheelbase
116 cmReference
—
Weight
212 kgReference
408 kgReference
Front tire
13x5.00-6Reference
16x6.50-8Reference
Rear tire
18x8.50-8Reference
23x8.50-12Reference
Lawn/turf front
13x5.00-6Reference
16x6.50-8Reference
Lawn/turf rear
18x8.50-8Reference
23x8.50-12Reference
Length
157 cmReference
191 cmReference
Height
93 cmReference
109 cmReference
Width
—
92 cmReference
Shipping weight
—
408 kgReference
Gravely 1238-G attachments
Electrical
Ground
negativeReference
negativeReference
Charging amps
3Reference
—
Battery volts
12Reference
12Reference
Battery AH
—
43Reference
Battery Group
—
22FReference
Attachment overview
38" Mower deck
Type
belt-driven gearReference
shaft-driven gearReference
Cutting width
96 cmReference
—
Overall width
86 cmReference
—
Cut height
3 to 8 cmReference
—
Gravely 812 attachments
812 Serial Numbers
Location:
—
In front of, and below, air cleaner.Reference
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.