The Bolens 850 is a lawn tractor with a rated power output of 8 hp, categorising it within the lighter end of its class. Manufactured from 1966 to 1969, the 850 features a 1-cylinder petrol air-cooled engine, paired with a two-wheel drive system and a 6-speed gearbox. It has an operating weight of 249 kg, making it suitable for operations of up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
8 hp
Weight
249 kg
Catalogue coverage
Variants represented
2
Richest spec table
46 rows
Recorded power
8 hp
Recorded weight
249 kg
Transmissions
6-speed gear
Production years
1966-1969
Verified variants
0
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Overview
ManufacturerBolensReference
Garden tractorReference
Original price was $783 in 1965Reference
Two-wheel driveReference
SteeringmanualReference
Open operator stationReference
Engine
8.25HP Wisconsin 331cc 1-cyl gasolineReference
Fuel tank4.7 LReference
Wisconsin S8DReference
gasolineReference
1-cylinderReference
air-cooledReference
Displacement20.2 ciReference
Bore/Stroke79 x 67 mmReference
Power6.2 kWReference
Rated RPM3600Reference
StarterelectricReference
Starter volts12Reference
Oil capacity1.9 LReference
Transmission
6-speed gearReference
TransmissionBolensReference
TypegearReference
Gears6 forward and 2 reverseReference
Oil capacity2.4 LReference
Oil typeEP 90 Gear LubeReference
Dimensions
Wheelbase107 cmReference
Weight249 kgReference
Front tire4.00-8Reference
Rear tire23x8.50-12Reference
Lawn/turf front4.00-8Reference
Lawn/turf rear23x8.50-12Reference
Length158 cmReference
Width86 cmReference
Height101 cmReference
Shipping weight249 kgReference
Ground clearance17 cmReference
Bolens 850 attachments
32" mid-mount mower deckReference
38" mid-mount mower deckReference
snowblowerReference
bladeReference
Electrical
GroundnegativeReference
Battery volts12Reference
Attachment overview
32" mid-mount mower deckReference
38" mid-mount mower deckReference
SnowblowerReference
BladeReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
