Bolens 1257
The Bolens 1257 is a tractor produced by Bolens Lawn Tractors. It is equipped with a 453 cc 27.66 ci engine. The listed engine power is Gasoline (listed): 12 hp / 8.9 kW. Transmission: Eaton 10. Operating weight: 680 lbs 308 kg.
Engine Power
Gasoline (listed): 12 hp / 8.9 kW
Fuel & Capacities
Gasoline
Transmission
Eaton 10
Operating Weight
680 lbs
308 kg
Overview
 | 1971
Tube Frame SeriesGarden tractor
Tube Frame Series
Garden tractor |
|---|
Production | |
|---|---|
Manufacturer | Bolens |
Garden tractor | |
Bolens 1257 Engine | |
|---|---|
12HP Tecumseh 453cc 1-cyl gasoline | |
Engine details ...  |
Bolens 1257 Transmission | |
|---|---|
hydrostatic | |
Transmission details ...  |
Mechanical | |
|---|---|
Two-wheel drive | |
Steering | manual |
Open operator station | |
Dimensions & Tires | |
|---|---|
Wheelbase | 43 inches
109 cm |
Weight | 680 lbs
308 kg |
Front tire | 16x6.50-8 |
Rear tire | 23x10.50-12 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
 | |
Bolens Husky published in 1970 |
Engine
Engine Detail — 453 cc / 27.66 ci Gasoline
Manufacturer | Tecumseh HH120 |
Fuel Type | Gasoline |
Configuration | 1-cylinder, air-cooled |
Displacement | 453 cc
27.66 ci |
Bore/Stroke | 3.50x2.875 inches
89 x 73 mm |
Power | 12 hp
8.9 kW |
Rated RPM | 3600 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — Eaton 10
Transmission | Eaton 10 |
Type | hydrostatic |
Gears | infinite forward and reverse |
Dimensions
Bolens 1257 Tires | |
|---|---|
Lawn/turf front | 16x6.50-8 |
Lawn/turf rear | 23x10.50-12 |
Dimensions | |
|---|---|
Wheelbase | 43 inches
109 cm |
Length | 63 inches
160 cm |
Width | 34 inches
86 cm |
Height | 40 inches
101 cm |
Shipping weight | 680 lbs
308 kg |
Attachments
Mower deck | |
|---|---|
Type | mid-mount Bolens |
3-blade | |
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Bolens Lawn Tractors Bolens 1257.
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Bolens Lawn Tractors Bolens 1257 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Bolens Lawn Tractors Bolens 1257.
Converted Equivalents:
Horsepower (HP)12 hp
Kilowatts (kW)8.9 kW
Metric Horsepower (PS / CV)12.2 PS
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