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Gravely 450 vs Gravely 7173-H
Verdict: Gravely 450 vs Gravely 7173-H
The Gravely 450 and the Gravely 7173-H are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 17 hp. Gravely 450 is the lighter machine (430 kg vs 826 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely 450 holds more fuel (20.1 L vs 17.0 L) for longer stints between fills. Gravely 7173-H is the newer design (1986 vs 1970). 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
Gravely
62
Fit score
Best match
Clear
Gravely
62
Fit score
Best match
Clear
Rated power
17 hp
17 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
GravelyReference
Gravely (a part of Ariens)Reference
Two-speed shift-on-the-move affects transmission and PTO speed. Additional two-speed range for transmission can be shifted only when stopped. Right-hand directional clutch lever controls forward and reverse.Reference
air-cooled horizontal-shaft horizontall-opposedReference
Engine
Fuel tank
20.1 LReference
17.0 LReference
Displacement
49.8 ciReference
—
Bore/Stroke
76 x 83 mmReference
—
Power
12.3 kWReference
—
Air cleaner
dry elementReference
—
Rated RPM
3600Reference
—
Starter volts
12Reference
12Reference
Sparkplug gap
0.635 mmReference
—
Intake valve clearance
0.279 mmReference
—
Exhaust valve clearance
0.279 mmReference
—
Oil capacity
4.7 LReference
3.8 LReference
Power (gross)
—
12.7 kWReference
Starter
—
electricReference
Transmission
Transmission
Swiftamatic 8Reference
—
Type
shaft-driven gearReference
shaft-driven hydrostaticReference
Gears
4 forward and reverseReference
infinite forward and reverseReference
Oil type
SAE 90W-EPReference
—
Dimensions
Weight
430 kgReference
374 kgReference
Front tire
16x6.50-8Reference
16x6.50-8Reference
Rear tire
23x8.50-12Reference
23x10.50-12Reference
Lawn/turf front
16x6.50-8Reference
16x6.50-8Reference
Lawn/turf rear
23x8.50-12Reference
23x10.50-12Reference
Length
191 cmReference
187 cmReference
Width
106 cmReference
108 cmReference
Height
109 cmReference
116 cmReference
Shipping weight
430 kgReference
394 kgReference
Wheelbase
—
123 cmReference
Gravely 450 attachments
450 Serial Numbers
Location:
Ahead of rear axle on left side.Reference
—
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
Charging amps
—
15Reference
Attachment overview
PTO & Hydraulics
Rear Type
—
0Reference
Mid PTO
—
independentReference
Clutch
—
electricReference
Gravely 7173-H attachments
48" Mower deck
Cutting width
—
121 cmReference
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.