Compare/Bolens 831 vs Bolens G-9 855

Bolens 831 vs Bolens G-9 855

Verdict: Bolens 831 vs Bolens G-9 855

The Bolens 831 and the Bolens G-9 855 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 8 hp. Bolens 831 is the lighter machine (174 kg vs 272 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Bolens 831 is the newer design (1979 vs 1976). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Bolens

Fit score

Best match

Clear

Bolens

Fit score

Best match

Clear

Rated power

8 hp

Confidence

40%

Guide price

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Overview

Manufacturer

BolensReference

air-cooled vertical-shaftReference

The three-speed transmission is fitted with two range pulleys. Changing the input belt allows for a second speed range.Reference

Steering

—

manualReference

Variants

830

manual startReference

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831

electric startReference

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Engine

Fuel tank

2.8 LReference

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Displacement

19.44 ciReference

Bore/Stroke

76 x 70 mmReference

Power (gross)

6.0 kWReference

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Rated RPM

3600Reference

Starter

electricReference

Starter volts

12Reference

Sparkplug

Champion J-8Reference

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Sparkplug gap

0.762 mmReference

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Point gap

0.508 mmReference

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Oil capacity

1.1 LReference

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Oil change

25 hReference

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Power

—

6.0 kWReference

Transmission

Peerless 730Reference

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Gears

5 forward and 1 reverseReference

3 forward and 1 reverseReference

PTO & Hydraulics

Mid PTO

independentReference

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Clutch

idler pulleyReference

mechanicalReference

Front PTO

—

independentReference

Front PTO Type

—

3600Reference

Dimensions

Wheelbase

109 cmReference

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Weight

174 kgReference

272 kgReference

Front tire

4x10.4Reference

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Rear tire

6.5x16-8Reference

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Lawn/turf front

4x10.4Reference

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Lawn/turf rear

6.5x16-8Reference

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Length

152 cmReference

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Height (steering wheel)

97 cmReference

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Shipping weight

—

272 kgReference

Bolens 831 attachments

831 Serial Numbers

Location:

Serial number decal on the right-rear of the mower, between the engine and tire.Reference

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Electrical

Ground

negativeReference

Battery volts

12Reference

Battery AH

19Reference

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30" Mower deck

Type

belt-driven gearReference

gearReference

Cutting width

76 cmReference

96 cmReference

Overall width

95 cmReference

—

Cut height

3 to 8 cmReference

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Cut positions

7Reference

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Bolens G-9 attachments

Attachment overview

38" Mower deck

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.