Compare/Wheel Horse 312-8 vs Wheel Horse 312-H

Wheel Horse 312-8 vs Wheel Horse 312-H

Verdict: Wheel Horse 312-8 vs Wheel Horse 312-H

The Wheel Horse 312-8 and the Wheel Horse 312-H are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 12 hp. Wheel Horse 312-H is the lighter machine (282 kg vs 547 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Wheel Horse 312-8 holds more fuel (8.5 L vs 6.6 L) for longer stints between fills. Wheel Horse 312-H is the newer design (1990 vs 1985). 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

Wheel Horse

Fit score

Best match

Clear

Wheel Horse

Fit score

Best match

Clear

Rated power

12 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Wheel HorseReference

Wheel Horse (a part of Toro)Reference

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

air-cooled horizontal-shaftReference

Engine

Fuel tank

8.5 LReference

6.6 LReference

Displacement

29.1 ciReference

29.07 ciReference

Bore/Stroke

86 x 83 mmReference

Power (gross)

8.9 kWReference

Starter volts

12Reference

Compression

6.6:1Reference

—

Rated RPM

3600Reference

Sparkplug

Champion RH10Reference

RH10Reference

Sparkplug gap

0.635 mmReference

Oil capacity

1.9 LReference

2.4 LReference

Starter

—

electricReference

Transmission

Type

belt-driven gearReference

belt-driven hydrostaticReference

Gears

6 forward and 2 reverseReference

infinite forward and reverseReference

Oil type

SAE 90 GL5Reference

—

Transmission

—

Eaton 1100-032Reference

PTO & Hydraulics

Front PTO

independentReference

—

Clutch

mechanicalReference

—

Dimensions

Wheelbase

115 cmReference

Weight

248 kgReference

282 kgReference

Front tire

15x6.00-6Reference

Rear tire

22x9.00-12Reference

23x8.50-12Reference

Lawn/turf front

15x6.00-6Reference

Lawn/turf rear

22x9.00-12Reference

23x8.50-12Reference

Length

165 cmReference

Width

92 cmReference

Height

107 cmReference

Shipping weight

297 kgReference

—

312-8 Serial Numbers

1985

21-12K801Reference

—

1986

21-12K803Reference

—

1987

21-12K804Reference

—

1988

21-12K805Reference

—

1989

21-12K806Reference

—

1990

31-12K801Reference

-unknown-Reference

1991

31-12K802Reference

-unknown-Reference

1992

31-12K804Reference

-unknown-Reference

1993

3900001 (73380)Reference

—

1994

4900001 (73362/73380)Reference

—

1995

5900001 (73362)Reference

—

1996

6900001 (73362/73363)Reference

—

1997

7900001 (73363)Reference

—

Location:

Model codes shown.Reference

Serial number plate on rear fender, below the seat. Model codes in parentheses.Reference

Electrical

Ground

negativeReference

Charging system

alternatorReference

—

Charging amps

15Reference

Battery CCA

160Reference

Battery volts

12Reference

Battery AH

24Reference

—

Attachment overview

312-H Serial Numbers

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.