Sears lawn tractors

Sears GT/19.9 917.25708

The Sears GT/19.9 is a garden tractor produced from 1978 to 1980 by Roper and distributed by Sears. It features a 19.9 hp Onan N52M 855cc 2-cylinder gasoline engine with an air-cooled horizontal-shaft opposed twin design. The tractor has a 6-speed Peerless belt-driven gear transmission with 6 forward and 2 reverse gears. It is a two-wheel drive with manual steering and mechanical band brakes. The tractor includes an independent front PTO with a mechanical clutch. Dimensions are 68.5 inches long, 36.5 inches wide, and 40 inches high, with a shipping weight of 636 lbs. Tires are 16x6.50-8 front and 23x10.00-12 rear. Electrical system features a 12-volt battery with a 15 amp alternator. Attachments available include 42" and 48" mid-mount mower decks, a 46" front blade, snow blower, and front-end loader.

Power-

Founded-

ModelGT/19.9

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Technical Specifications

Detailed specifications and technical data for Sears GT/19.9 917.25708

Engine

Type	gasoline
Model	Onan N52M
Cooling	air-cooled horizontal-shaft opposed twin
Starter	electric
Cylinders	2-cylinder
Rated RPM	3600
Bore/Stroke	3.5625x2.625 inches (90 x 67 mm)
Displacement	855 cc (52.2 ci)
Oil capacity	1.75 qts (1.7 L)
Power (gross)	19.9 hp (14.8 kW)
Starter volts	12
Compression ratio	6.5:1
Fuel tank capacity	3.25 gal (12.3 L)
Oil change interval	25 h

Overview

Type	Garden tractor
Distributor	Sears
Manufacturer	Roper
Original price	$2,879 in 1979
Production years	1978 - 1980

Electrical

Ground	negative
Battery volts	12
Charging amps	15
Charging system	alternator

Mechanical

Drive	Two-wheel drive
Brakes	Mechanical band brakes
Steering	Manual steering
Operator station	Open operator station

Attachments

Note	Garden tractors are capable of using tillers, plows, or other ground-engaging attachments.
Loader	79 inches height at pin (200 cm), weight 400 lbs (181 kg), bucket width 36 inches (91 cm)
46" Blade	front-mount, 46 inches width (116 cm), 17 inches height (43 cm), 113 lbs (51 kg), manual-lift
Snow blower	front-mount, total width 42 inches (106 cm), weight 253 lbs (114 kg)
42" mid-mount mower deck	42 inches (106 cm) width, total width 58 inches (147 cm), 3-blade, manual lift, right-discharge, cut height 1.5 to 4.5 inch (3 to 11 cm), weight 172 lbs (78 kg)
48" mid-mount mower deck	48 inches (121 cm) width, total width 64 inches (162 cm), 3-blade, manual lift, right-discharge, weight 184 lbs (83 kg)

Transmission

Note	Three gears (1-3) plus reverse (R) in two ranges (low/high).
Type	belt-driven gear
Brand	Peerless
Gears	6 forward and 2 reverse
Clutch	mechanical idler pulley
Oil type	SAE 30
Oil capacity	5 qts (4.7 L)
Oil change interval	480 h