Bolens HT20

Bolens HT20The Bolens HT20 is a garden tractor model from the Large Frame series, manufactured from 1973 to 1978 by Bolens in Port Washington, Wisconsin, USA. It was available in two-wheel drive (2WD) version.

The Bolens HT-20 is equipped with a 880 cc (53.7 cu·in) two-cylinder gasoline engine with 85.7 mm (3.37 in) of the cylinder bore and 76.2 mm (3.00 in) of the piston stroke, and a shaft-driven hydrostatic transmission with infinite forward and reverse gears.

The Bolens HT20 garden tractor features:

  • The Kohler K532 gasoline engine which produces 19.7 PS (14.5 kW; 19.5 HP) at 3,450 rpm of horsepower
  • Manual steering
  • Disc brakes
  • Open operator station
  • Sleeve hitch (optional)
  • Front PTO with mechanical clutch and 2000 rpm

General specifications

General Specifications
Model Bolens HT20
Tractor type garden tractor
Production years 1973-1978
Factory Port Washington, Wisconsin, USA
Dimensions and weight
Length 1,900 mm (74.8 in)
Width Max: 1,190 mm (46.9 in)
Min: 960 mm (37.8 in)
Height 1,140 mm (44.9 in)
Wheel base 1,320 mm (52 in)
Ground clearance 210 mm (8.3 in)
Weight 494 kg (1,089 lbs)
Fuel capacity
Fuel tank capacity 18.9 liters (5.0 US gal.; 4.2 Imp. gal)

Engine

Engine Specifications
Engine model Kohler K532
Engine type 4-stroke, L-head (side valve), single-cylinder
Displacement 880 cm3, (53.7 cu·in)
Bore and stroke 85.7 mm X 76.2 mm (3.37 in X 3.00 in)
Max. horsepower 19.7 PS (14.5 kW; 19.5 HP) at 3,450 rpm
Cooling system Forced air
Lubricating system Splash type
Fuel system Carburetor
Starting system Electirc starter
Valve clearance
Intake valve clearance: 0.20-0.25 mm (0.0079-0.0098 in)
Exhaust valve clearance: 0.43-0.48 mm (0.0169-0.0189 in)
Oil system
Lubrication system: Splash type
Oil type: API SF or SG
Recommended oil: Summer: SAE 30W
Winter: SAE 5W-20, 5W-30
Oil capacity: 3.8 L (4 US. qt, 3.3 Imp. qt.)
Ignition system
Spark plug: Champion RH10
Spark plug gap: 0.65 mm (0.0256 in)
Spark plug torque: 27 N·m (2.8 kg·m, 19.9 ft·lb)

Transmission and chassis

Chassis, steering and brakes
Chassis 4×2 2WD
Steering type Manual
Brakes Disc
Transmission
Transmission manufacturer or model Sundstrand 15
Transmission type Shaft-driven hydrostatic
Gears Infinite forward and reverse
Speed Forward: 12.9 kmh (8 mph)
Reverse: 6.4 kmh (4 mph)
Transmission oil capacity 9.5 L (2.5 US. gal, 2.1 Imp. gal.)

Tires

Tires
Front tires Ag: 18-8.50×8
Rear tires Ag: 26-12.00×12

Rear Hitch

Three-Point Hitch
Category Sleeve hitch (optional)
Control type
Lift capacity (at ends)

PTO (Power take-off shaft)

PTO
Front PTO type with mechanical clutch
Front PTO speed 2000 rpm

Electrical system

Electrical system
Ground Negative
Charging system Alternator
Charging amps 15A
Battery 12V, 45Ah

Attachments

Bolens 54″ mid-mount mower deck
Cutting width 1,370 mm (54 in)
Bolens 54″ front-mount blade
Cutting width 1,370 mm (54 in)
Bolens 42″ front-mount single-stage snow blower
Width 1,060 mm (42 in)
Bolens 46″ front-mount two-stage snow blower
Width 1,160 mm (46 in)
Johnson 14: 48″ loader
Width 1,210 mm (48 in)
Brantly C backhoe

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