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John Deere 340/S vs John Deere Sportfire

Verdict: John Deere 340/S vs John Deere Sportfire

The John Deere 340/S and the John Deere Sportfire are both snowmobiles — here is how they stack up on the figures that matter. Both are rated at the same 47 hp. John Deere 340/S holds more fuel (30.3 L vs 28.4 L) for longer stints between fills. John Deere Sportfire is the newer design (1980 vs 1975). 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
John Deere 340/S Snowmobile
John Deere
71
Fit score
Best match
Clear
John Deere Sportfire Snowmobile
John Deere
71
Fit score
Best match
Clear
Rated power
47 hp
47 hp
Confidence
98%
98%
Guide price
Overview
Manufacturer
John DeereReference
John DeereReference
air-cooledReference
air-cooledReference
Suspension
slide railReference
slide railReference
Engine
Fuel tank
30.3 LReference
28.4 LReference
Displacement
20.7 ciReference
26.6 ciReference
Bore/Stroke
60 x 60 mmReference
68 x 60 mmReference
Power
35.0 kWReference
35.0 kWReference
Fuel system
dual Mikuni VM34-55 carburetorsReference
Mikuni AM55055 carburetorReference
Rated RPM
8000Reference
Starter type
manual-recoilReference
Sparkplug
Champion N19-VReference
Champion QN-2Reference
Cooling system
axial fanReference
Compression
7.3:1Reference
Starter
electricReference
Starter volts
12Reference
Sparkplug gap
0.635 mmReference
Dimensions
Weight
174 kgReference
174 kgReference
Length
262 cmReference
259 cmReference
Width
85 cmReference
93 cmReference
Height
104 cmReference
93 cmReference
Track width
39 cmReference
38 cmReference
Sportfire Serial Number Location
Sportfire Serial Numbers
1980
120001Reference
1981
155001Reference
1982
190001Reference
1983
222001Reference
1984
285001Reference
Electrical
Ground
negativeReference
Battery volts
12Reference

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.

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