Sears lawn tractors

Sears Suburban 12 917.99420

The Sears Suburban 12 is a garden tractor built by David Bradley and distributed by Sears from 1966 to 1971. It features a 12 hp Tecumseh HH120 453cc 1-cylinder air-cooled gasoline engine, a 6-speed belt-driven gear transmission with 2 reverse gears, and two-wheel drive with manual steering. The tractor weighs 581 lbs (263 kg) and rides on 4.80-8 front and 7.50-12 rear lawn/turf tires. It has mechanical band brakes and an open operator station. Optional attachments include a Sears 3-point tractor hitch and a 42-inch mid-mount mower deck with 3 blades. Electrical system is 12 volts with negative ground.

Power-

Founded-

ModelSuburban 12

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Technical Specifications

Detailed specifications and technical data for Sears Suburban 12 917.99420

Engine

Type	gasoline
Model	Tecumseh HH120
Cooling	air-cooled horizontal-shaft
Starter	electric
Cylinders	1-cylinder
Point gap	0.020 inches (0.508 mm)
Rated RPM	3600
Bore/Stroke	3.50x2.875 inches (89 x 73 mm)
Fuel system	carburetor
Displacement	453 cc (27.66 ci)
Power (gross)	12 hp (8.9 kW)
Sparkplug gap	0.030 inches (0.762 mm)
Starter volts	12
Oil change interval	25 h
Intake valve clearance	0.010 inches (0.254 mm)
Exhaust valve clearance	0.020 inches (0.508 mm)

Features

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

Dimensions

Weight	581 lbs (263 kg)
Rear tire	7.50-12
Front tire	4.80-8

Electrical

Ground	negative
Battery volts	12

Production

Type	Garden tractor
Distributor	Sears
Manufacturer	David Bradley
Original price	$630 in 1966
Years produced	1966 - 1971

Attachments

Tractor hitch	Sears 3-Point Optional
42" mower deck	mid-mount Sears, 3-blade, 42 inches (106 cm) cutting width

Transmission

Type	belt-driven gear
Gears	6 forward and 2 reverse
Notes	Three gears (1-3) plus reverse (R) with two ranges (low-high).
Oil type	SAE 30
Oil capacity	5 qts (4.7 L)
Oil change interval	500 h