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Lawn Tractor · 1979Unverified

Bolens 831

Name: Bolens 831
Brand: Bolens

Bolens 831 — Riding lawn mower · 8 hp. Reference specifications; pending source verification.

The Bolens 831 is a lawn tractor with an approximate power output of 8 hp, positioning it at the lower end of its class in terms of power. It was manufactured between 1979 and 1986. The model is equipped with a 1-cylinder petrol air-cooled engine, paired with a 2-wheel drive system and a 5-speed gearbox. Its listed operating weight is 174 kg, and it is designed for use in areas of up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

8 hp

Weight

174 kg

Catalogue coverage

Variants represented

Richest spec table

51 rows

Recorded power

8 hp

Transmissions

5-speed gear

Production years

1979-1986

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerBolensReference

Riding lawn mowerReference

Two-wheel driveReference

Manual steeringReference

Disc brakesReference

Open operator station.Reference

Variants

830manual startReference

831electric startReference

Engine

8HP Briggs & Stratton 318cc 1-cyl gasolineReference

Fuel tank2.8 LReference

Briggs & Stratton 190707Reference

gasolineReference

1-cylinderReference

air-cooled vertical-shaftReference

Displacement19.44 ciReference

Bore/Stroke76 x 70 mmReference

Power (gross)6.0 kWReference

Rated RPM3600Reference

StarterelectricReference

Starter volts12Reference

SparkplugChampion J-8Reference

Sparkplug gap0.762 mmReference

Point gap0.508 mmReference

Oil capacity1.1 LReference

Oil change25 hReference

Transmission

5-speed gearReference

TransmissionPeerless 730Reference

Typebelt-driven gearReference

Gears5 forward and 1 reverseReference

Clutchidler pulleyReference

PTO & Hydraulics

Mid PTOindependentReference

Clutchmechanical idler pulleyReference

Dimensions

Wheelbase109 cmReference

Weight174 kgReference

Front tire4x10.4Reference

Rear tire6.5x16-8Reference

Lawn/turf front4x10.4Reference

Lawn/turf rear6.5x16-8Reference

Length152 cmReference

Height (steering wheel)97 cmReference

Bolens 831 attachments

30" mid-mount mower deckReference

831 Serial Numbers

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

Electrical

GroundnegativeReference

Battery volts12Reference

Battery AH19Reference

30" Mower deck

Typemid-mount BolensReference

Type1-blade with manual liftReference

Cutting width76 cmReference

Overall width95 cmReference

Cut height3 to 8 cmReference

Cut positions7Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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