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Simplicity 3105 vs Simplicity Serf 515
Verdict: Simplicity 3105 vs Simplicity Serf 515
The Simplicity 3105 and the Simplicity Serf 515 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 5 hp. Simplicity 3105 is the newer design (1980 vs 1968). 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
Simplicity
62
Fit score
Best match
Clear
Simplicity
62
Fit score
Best match
Clear
Rated power
5 hp
5 hp
Confidence
40%
40%
Guide price
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Overview
Manufacturer
SimplicityReference
Simplicity (a part of Allis Chalmers)Reference
air-cooled vertical-shaftReference
air-cooledReference
Engine
Fuel tank
1.9 LReference
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Displacement
12.57 ciReference
12.57 ciReference
Bore/Stroke
65 x 62 mmReference
65 x 62 mmReference
Power (gross)
3.7 kWReference
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Air cleaner
oiled foamReference
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Rated RPM
3600Reference
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Starter type
manual recoilReference
manual recoilReference
Oil capacity
1.3 LReference
0.9 LReference
Power
—
3.7 kWReference
Fuel system
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carburetorReference
Transmission
Transmission
Tecumseh 740Reference
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Gears
5 forward and 1 reverseReference
2 forward and 1 reverseReference
Dimensions
Front tire
4.10x3.5-4Reference
4.00x6Reference
Rear tire
16x6.50-8Reference
4.80/4.00x8Reference
Lawn/turf front
4.10x3.5-4Reference
4.00x6Reference
Lawn/turf rear
16x6.50-8Reference
4.80/4.00x8Reference
Weight
—
29 kgReference
Length
—
130 cmReference
Width
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66 cmReference
Shipping weight
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116 kgReference
Simplicity 3105 attachments
3105 Serial Numbers
Location:
Serial number decal to the front of, and below, the seat.Reference
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26" Mower deck
Type
belt-driven gearReference
belt-driven gearReference
Cutting width
66 cmReference
71 cmReference
Cut height
3 to 11 cmReference
3 to 8 cmReference
Cut positions
6Reference
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Simplicity Serf 515 attachments
Attachment overview
28" Mower deck
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.