The Bolens Estate Keeper 931 is a lawn tractor with a rated power of 10 hp, positioning it within the lighter end of its class. Production of the Estate Keeper 931 spanned the years 1967 to 1969. It is equipped with a 1-cylinder petrol air-cooled engine and two-wheel drive, which is paired with a 6-speed gearbox. This model is suitable for operations covering areas 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
10 hp
Catalogue coverage
Variants represented
2
Richest spec table
28 rows
Recorded power
10 hp
Transmissions
6-speed gear
Production years
1967-1969
Verified variants
0
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Overview
ManufacturerBolensReference
Articulated front-mount mowerReference
Two-wheel driveReference
Manual articulated steeringReference
Open operator station.Reference
Engine
10HP Wisconsin 331cc 1-cyl gasolineReference
Wisconsin TRA10DReference
gasolineReference
1-cylinderReference
air-cooledReference
Displacement20.2 ciReference
Bore/Stroke79 x 67 mmReference
Power7.5 kWReference
StarterelectricReference
Starter volts12Reference
Transmission
6-speed gearReference
TypegearReference
Gears6 forward and 2 reverseReference
Bolens 931 attachments
32" front-mount mower deckReference
38" front-mount mower deckReference
42" front-mount mower deckReference
snowblowerReference
bladeReference
Attachment overview
32" front-mount mower deckReference
38" front-mount mower deckReference
42" front-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.
