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Gravely 1238-H vs Gravely 8122
Verdict: Gravely 1238-H vs Gravely 8122
The Gravely 1238-H and the Gravely 8122 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 12 hp. Gravely 8122 is the lighter machine (408 kg vs 477 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely 8122 holds more fuel (20.1 L vs 6.6 L) for longer stints between fills. Gravely 1238-H is the newer design (1988 vs 1979). 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-cooledReference
Four gears (1-4) in two ranges (low-high) with forward/reverse clutches. The directional clutch must be in neutral to shift gears or ranges.Reference
Engine
Fuel tank
6.6 LReference
20.1 LReference
Displacement
28.4 ciReference
29.07 ciReference
Bore/Stroke
87 x 78 mmReference
86 x 83 mmReference
Power (gross)
8.9 kWReference
8.9 kWReference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
2.0 LReference
5.7 LReference
Power
9.3 kWReference
—
Transmission
Transmission
Eaton 750Reference
—
Gears
infinite forward and reverseReference
8 forward and 4 reverseReference
Oil type
—
10W-40 SCReference
PTO & Hydraulics
Mid PTO
independentReference
—
Clutch
manualReference
—
Mid PTO Type
pulleyReference
—
Dimensions
Wheelbase
116 cmReference
—
Weight
220 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
—
Width
—
92 cmReference
Height (steering wheel)
—
109 cmReference
Shipping weight
—
408 kgReference
Gravely 1238-H attachments
Electrical
Ground
negativeReference
negativeReference
Charging amps
13 (Kawasaki)Reference
—
Battery volts
12Reference
12Reference
Attachment overview
38" Mower deck
Type
belt-driven hydrostaticReference
gearReference
Cutting width
96 cmReference
—
Overall width
125 cmReference
—
Cut height
3 to 8 cmReference
—
Variants
8122
—
manual liftReference
8123
—
hydraulic liftReference
Gravely 8122 attachments
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.