Snowmobile · 1971Unverified
Bolens Sprint 399 TR
Bolens Sprint 399 TR — Snowmobile · 28 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
28 hp
Weight
174 kg
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Overview
ManufacturerBolensReference
SnowmobileReference
Built in Port Washington, Wisconsin, USAReference
TrackedReference
Manual steeringReference
Mechanical disc brakesReference
Suspensionbogie wheelReference
Engine
28HP Bolens-Gutbrod 390cc 3-cyl gasolineReference
Fuel tank25.0 LReference
Bolens-Gutbrod 3Z400Reference
gasolineReference
3-cylinderReference
air-cooled horizontal-shaft inlineReference
Displacement23.8 ciReference
Bore/Stroke55 x 55 mmReference
Power20.9 kWReference
Fuel systemTillotson HR103A carburetorReference
Compression9.3:1Reference
Rated RPM6000Reference
Startermanual recoilReference
StarterelectricReference
Starter volts12Reference
SparkplugChampion L-78Reference
Sparkplug gap0.508 mmReference
Dimensions
Weight174 kgReference
Length264 cmReference
Width86 cmReference
Height106 cmReference
Track width45 cmReference
Electrical
GroundnegativeReference
Battery volts12Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.