Compare/Allis Chalmers 611 Hydro vs Allis Chalmers 912

Allis Chalmers 611 Hydro vs Allis Chalmers 912

Verdict: Allis Chalmers 611 Hydro vs Allis Chalmers 912

The Allis Chalmers 611 Hydro and the Allis Chalmers 912 are both lawn tractors — here is how they stack up on the figures that matter. Allis Chalmers 912 leads on rated power with 12 hp against 11 hp. Allis Chalmers 611 Hydro is the lighter machine (249 kg vs 661 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 912 holds more fuel (11.4 L vs 8.3 L) for longer stints between fills. Allis Chalmers 611 Hydro is the newer design (1983 vs 1979). In short: choose the Allis Chalmers 912 for outright pulling power, or the Allis Chalmers 611 Hydro if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

11 hp

12 hp

Confidence

40%

Guide price

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Overview

Manufacturer

Allis ChalmersReference

air-cooled vertical-shaftReference

air-cooled horizontal-shaftReference

Steering

manualReference

—

Variants

4211H

similar Simplicity modelReference

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Engine

Fuel tank

8.3 LReference

11.4 LReference

Displacement

24.36 ciReference

29.07 ciReference

Bore/Stroke

87 x 67 mmReference

86 x 83 mmReference

Power

8.2 kWReference

8.9 kWReference

Air cleaner

foamReference

dryReference

Rated RPM

3600Reference

Idle RPM

1750-3400Reference

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Starter volts

12Reference

Oil capacity

0.7 LReference

2.8 LReference

Starter

—

electricReference

Transmission

Gears

infinite forward and reverseReference

Gear Weight

—

299 kgReference

Oil type

—

Allis-Chalmers Power Fluid 821Reference

Oil change

—

400 hReference

PTO & Hydraulics

Mid PTO

independentReference

liveReference

Clutch

manualReference

—

Mid PTO Type

pulleyReference

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Rear PTO

—

liveReference

Front PTO

—

liveReference

Dimensions

Wheelbase

115 cmReference

128 cmReference

Weight

36 kgReference

661 to 687 poundsReference

Front tire

13-6.00x6Reference

16-6.50x8Reference

Rear tire

18-8.50x8Reference

23-8.50x12Reference

Lawn/turf front

13-6.00x6Reference

16-6.50x8Reference

Lawn/turf rear

18-8.50x8Reference

23-8.50x12Reference

Length

165 cmReference

177 cmReference

Width

85 cmReference

93 cmReference

Height (steering wheel)

99 cmReference

100 cmReference

Height (hood)

85 cmReference

90 cmReference

Ground clearance

13 cmReference

—

Clearance (front axle)

23 cmReference

20 cmReference

Hydro Weight

—

311 kgReference

Front tread

—

76 cmReference

Rear tread

—

68 cmReference

Allis Chalmers 611 Hydro attachments

Electrical

Ground

negativeReference

Charging amps

3Reference

15Reference

Battery volts

12Reference

Charging system

—

flywheel alternatorReference

Battery AH

—

45Reference

Attachment overview

36" Mower deck

Type

belt-driven hydrostaticReference

Cutting width

91 cmReference

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Overall width

116 cmReference

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Cut height

3 to 8 cmReference

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Allis Chalmers 912 attachments

Links

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.