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Gravely 1238-H vs Gravely 8128
Verdict: Gravely 1238-H vs Gravely 8128
The Gravely 1238-H and the Gravely 8128 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 12 hp. Gravely 8128 is the lighter machine (403 kg vs 477 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely 8128 holds more fuel (20.1 L vs 6.6 L) for longer stints between fills. Gravely 1238-H is the newer design (1988 vs 1980). 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
—
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
2.0 LReference
—
Power
9.3 kWReference
8.9 kWReference
Transmission
Transmission
Eaton 750Reference
—
Gears
infinite forward and reverseReference
8 forward and 4 reverseReference
PTO & Hydraulics
Mid PTO
independentReference
independentReference
Clutch
manualReference
mechanicalReference
Mid PTO Type
pulleyReference
1000Reference
Dimensions
Wheelbase
116 cmReference
132 cmReference
Weight
220 kgReference
403 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
201 cmReference
Height
93 cmReference
109 cmReference
Width
—
92 cmReference
Shipping weight
—
403 kgReference
Ground clearance
—
17 cmReference
Gravely 1238-H attachments
Electrical
Ground
negativeReference
negativeReference
Charging amps
13 (Kawasaki)Reference
—
Battery volts
12Reference
12Reference
Battery AH
—
42Reference
Attachment overview
38" Mower deck
Type
belt-driven hydrostaticReference
shaft-driven gearReference
Cutting width
96 cmReference
—
Overall width
125 cmReference
—
Cut height
3 to 8 cmReference
—
Variants
8128
—
mechanical liftReference
8129
—
hydraulic liftReference
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.