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Lawn Tractor · 1985Unverified

Wheel Horse 312-8

Name: Wheel Horse 312-8
Brand: Wheel Horse

Wheel Horse 312-8 — 300 Series · 12 hp. Reference specifications; pending source verification.

The Wheel Horse 312-8 is a lawn tractor with a 12 hp engine rating, typical of mid-range models in its class. Produced from 1985 to 1997, it features a 1-cylinder petrol air-cooled engine and a two-wheel drive system with a 6-speed gearbox. The operating weight of the tractor is between 547 and 656 pounds. It is suitable for operations covering up to 200 acres.

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

Rated power

12 hp

Weight

547 to 656 pounds

Catalogue coverage

Variants represented

Richest spec table

79 rows

Recorded power

12 hp

Recorded weight

248 kg

Transmissions

6-speed gear

Production years

1985-1997

Verified variants

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

Hover a source tag to verify

Overview

ManufacturerWheel HorseReference

Garden tractorReference

Built in South Bend, Indiana, USAReference

Two-wheel driveReference

Manual steeringReference

Open operator station.Reference

Engine

12HP Kohler 476cc 1-cyl gasolineReference

Fuel tank8.5 LReference

Kohler K301SReference

gasolineReference

1-cylinderReference

air-cooledReference

Original engine. The K301 was used on the Wheel Horse 312-8 through the 1986 model year.Reference

Displacement29.07 ciReference

Bore/Stroke86 x 83 mmReference

Power (gross)8.9 kWReference

Starter volts12Reference

Kohler M12Reference

The Kohler M12S replaced the K301 on the Wheel Horse 312-8 starting with the 1987 model year, tractor model code 21-12K804.Reference

Displacement29.1 ciReference

Bore/Stroke86 x 83 mmReference

Compression6.6:1Reference

Rated RPM3600Reference

SparkplugChampion RH10Reference

Sparkplug gap0.635 mmReference

Oil capacity2.4 LReference

Transmission

6-speed gearReference

ManufacturerWheel HorseReference

Typebelt-driven gearReference

Gears6 forward and 2 reverseReference

Oil capacity1.9 LReference

Oil typeSAE 90 GL5Reference

PTO & Hydraulics

Front PTOindependentReference

ClutchmechanicalReference

Dimensions

Wheelbase115 cmReference

Weight547 to 656 poundsReference

Front tire15x6.00-6Reference

Rear tire22x9.00-12Reference

36" mid-mount mower deckReference

37" mid-mount mower deckReference

42" mid-mount mower deckReference

48" mid-mount mower deckReference

snowblowerReference

bladeReference

Lawn/turf front15x6.00-6Reference

Lawn/turf rear22x9.00-12Reference

Length165 cmReference

Width92 cmReference

Height107 cmReference

Weight248 kgReference

Shipping weight297 kgReference

312-8 Serial Numbers

Location:Model codes shown.Reference

198521-12K801Reference

198621-12K802Reference

198621-12K803Reference

198721-12K804Reference

198821-12K805Reference

198921-12K806Reference

199031-12K801Reference

199131-12K802Reference

199231-12K804Reference

19933900001 (73380)Reference

19944900001 (73362/73380)Reference

19955900001 (73362)Reference

19966900001 (73362/73363)Reference

19977900001 (73363)Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps15Reference

Battery CCA160Reference

Battery volts12Reference

Battery AH24Reference

Attachment overview

36" mid-mount mower deckReference

37" mid-mount mower deckReference

42" mid-mount mower deckReference

48" mid-mount mower deckReference

SnowblowerReference

BladeReference

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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