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MTD 621 vs MTD 912
Verdict: MTD 621 vs MTD 912
The MTD 621 and the MTD 912 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 10 hp. MTD 912 holds more fuel (11.4 L vs 3.8 L) for longer stints between fills. MTD 621 is the newer design (1982 vs 1977). 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
MTD
62
Fit score
Best match
Clear
MTD
62
Fit score
Best match
Clear
Rated power
10 hp
10 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
MTDReference
MTDReference
air-cooled vertical-shaftReference
air-cooled horizontal-shaftReference
Engine
Fuel tank
3.8 LReference
11.4 LReference
Power (gross)
7.5 kWReference
7.5 kWReference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Displacement
—
24.36 ciReference
Bore/Stroke
—
87 x 67 mmReference
Transmission
Transmission
Peerless 817Reference
PeerlessReference
Gears
3 forward and 1 reverseReference
4 forward and 1 reverseReference
PTO & Hydraulics
Mid PTO
independentReference
independentReference
Clutch
manual idler pulleyReference
manualReference
Rear Type
—
0Reference
Dimensions
Front tire
13x5.00Reference
16x6.50Reference
Rear tire
16x6.50Reference
23x8.50Reference
Lawn/turf front
13x5.00Reference
16x6.50Reference
Lawn/turf rear
16x6.50Reference
23x8.50Reference
Weight
—
360 kgReference
Shipping weight
—
360 kgReference
MTD 621 attachments
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
34" Mower deck
Type
belt-driven gearReference
belt-driven variatorReference
Cutting width
86 cmReference
—
Variants
910
—
gearReference
912
—
variatorReference
MTD 912 attachments
912 Serial Numbers
1977
—
147-912A (model code)Reference
1978
—
148-912A (model code)Reference
1979
—
149-912A (model code)Reference
1980
—
140-912A (model code)Reference
Location:
—
Serial number decal on top of the rear fender deck, below the seat.Reference
Attachment overview
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.