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Wheel Horse 312-A vs Wheel Horse 612-Z
Verdict: Wheel Horse 312-A vs Wheel Horse 612-Z
The Wheel Horse 312-A and the Wheel Horse 612-Z 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 612-Z is the lighter machine (309 kg vs 584 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Wheel Horse 612-Z is the newer design (1990 vs 1986). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
Wheel Horse
62
Fit score
Best match
Clear
Wheel Horse
62
Fit score
Best match
Clear
Rated power
12 hp
12 hp
Confidence
40%
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-A starting with the 1987 model year, tractor model code 21-12KE03.Reference
air-cooled vertical-shaftReference
Engine
Fuel tank
11.4 LReference
11.4 LReference
Displacement
29.1 ciReference
23.7 ciReference
Bore/Stroke
86 x 83 mmReference
84 x 70 mmReference
Power
8.9 kWReference
8.9 kWReference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Power (gross)
8.9 kWReference
—
Compression
6.6:1Reference
—
Rated RPM
3600Reference
—
Sparkplug
Champion RH10Reference
—
Sparkplug gap
0.635 mmReference
—
Oil capacity
2.4 LReference
—
Transmission
Transmission
Eaton 700-0015Reference
Eaton 780Reference
Type
belt-driven hydrostaticReference
hydrostaticReference
Gears
infnite forward and infinite reverseReference
infinite forward and reverseReference
Dimensions
Wheelbase
115 cmReference
106 cmReference
Weight
264 kgReference
309 kgReference
Front tire
15x6.00-6Reference
11x4.00-5Reference
Rear tire
22x9.00-12Reference
18x9.50-8Reference
Lawn/turf front
15x6.00-6Reference
11x4.00-5Reference
Lawn/turf rear
22x9.00-12Reference
18x9.50-8Reference
Length
164 cmReference
182 cmReference
Width
91 cmReference
101 cmReference
Shipping weight
312 kgReference
—
312-A Serial Numbers
1986
-unknown-Reference
—
1987
-unknown-Reference
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Location:
Model codes shown.Reference
Serial number plate on the left side of the machine, behind the left drive wheel.Reference
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
Battery CCA
—
280Reference
Attachment overview
PTO & Hydraulics
Mid PTO
—
independentReference
Clutch
—
electricReference
612-Z 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.