Compare/Allis Chalmers 405 vs Allis Chalmers B-206

Allis Chalmers 405 vs Allis Chalmers B-206

Verdict: Allis Chalmers 405 vs Allis Chalmers B-206

The Allis Chalmers 405 and the Allis Chalmers B-206 are both lawn tractors — here is how they stack up on the figures that matter. Allis Chalmers B-206 leads on rated power with 6 hp against 5 hp. Allis Chalmers 405 is the lighter machine (121 kg vs 335 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 405 holds more fuel (2.8 L vs 1.9 L) for longer stints between fills. Allis Chalmers 405 is the newer design (1975 vs 1971). In short: choose the Allis Chalmers B-206 for outright pulling power, or the Allis Chalmers 405 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

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

5 hp

6 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

air-cooled horizontal-shaftReference

air-cooled vertical-shaftReference

Variants

3005 Wonder Boy

similar Simplicity modelReference

—

B-206E

—

electric startReference

Engine

Fuel tank

2.8 LReference

1.9 LReference

Displacement

12.5 ciReference

14.11 ciReference

Bore/Stroke

65 x 62 mmReference

70 x 60 mmReference

Power

3.7 kWReference

4.5 kWReference

Starter type

electricReference

—

Air cleaner

—

oiled foamReference

Rated RPM

—

3600Reference

Starter

—

electricReference

Starter volts

—

12Reference

Oil capacity

—

1.1 LReference

Transmission

Gears

2 forward and 1 reverseReference

3 forward and 1 reverseReference

Dimensions

Wheelbase

105 cmReference

100 cmReference

Weight

121 kgReference

335 to 350 poundsReference

Front tire

4.10/3.50x4Reference

11.00x3.75-5Reference

Rear tire

16.00/6.50x8Reference

4.80/4.00x8Reference

Lawn/turf front

4.10/3.50x4Reference

11.00x3.75-5Reference

Lawn/turf rear

16.00/6.50x8Reference

4.80/4.00x8Reference

Length

147 cmReference

135 cmReference

Width

71 cmReference

64 cmReference

Height (steering wheel)

99 cmReference

86 cmReference

Height (hood)

74 cmReference

73 cmReference

Shipping weight

121 kgReference

158 kgReference

Clearance (front axle)

—

20 cmReference

Clearance (rear axle)

—

11 cmReference

Allis Chalmers 405 attachments

405 Serial Number Location

26" Mower deck

Type

belt-driven gearReference

Cutting width

66 cmReference

Overall width

91 cmReference

—

Cut height

3 to 9 cmReference

—

PTO & Hydraulics

Mid PTO

—

independentReference

Clutch

—

manual idler pulleyReference

Allis Chalmers B-206 attachments

Electrical

Ground

—

negativeReference

Charging amps

—

4Reference

Battery volts

—

12Reference

Attachment overview

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.