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Sears GT16 Twin Technical Data

General Information

Tractor Model ...................... Sears GT-16 502.25704
Tractor Type ...................... Garden tractor
Manufacture Years ...................... 1978-1979
Fuel Type ...................... Gasoline
Attachments ...................... Mower Deck

Sears GT16 Engine

Engine Model ...................... Briggs and Stratton 401707
Engine Type ...................... 4-cycle vertical-shaft L-head two cylinder air-cooled gasoline
Number of Cylinders ...................... 2
Displacement, cu.in (cc) ...................... 40.0 (655)
Engine Bore, in (mm) ...................... 3.44 (87.0)
Engine Stroke, in (mm) ...................... 2.16 (55.0)
Maximum Engine Power, hp (kW) ...................... 16.0 (11.9)
Rated Engine Speed, rpm ...................... 3600
Idle Speed, rpm ...................... 1250-1450
Maximum Torque, Nm (ft-lbs) ...................... 34.8 (25.8)
Torque Speed, rpm ...................... 2700
Fuel System ...................... Carburetor
Governor Type ...................... Mechanical
Lubrication System ...................... Full pressure with oil filter
Air Cleaner Type ...................... Foam
Spark Plug Type ...................... Champion RJ-12
Spark Plug Gap, in (mm) ...................... 0.030 (0.76)
Ignition Point Gap, in (mm) ...................... 0.020 (0.51)
Intake Valve Clearance, in (mm) ...................... 0.004-0.006 (0.10-0.15)
Exhaust Valve Clearance, in (mm) ...................... 0.007-0.009 (0.18-0.23)
Fuel Tank Capacity, gal (L) ...................... 3.0 (11.4)
Oil Capacity, qts (L) ...................... 1.5 (1.4)

Electrical System

Electrical System Rating, Volts ...................... 12
Starter Type ...................... Electric
Number of Batteries ...................... 1
Electric Ground ...................... Negative

Power Take Off

PTO Operational Type ...................... Independent
PTO Clutch ...................... Mechanical
PTO Speed, rpm ...................... 3000

Sears GT16 Transmission

Transmission Type ...................... Belt-driven gear
Gearbox Type ...................... 4F/1R
Number of Forward Gears ...................... 4
Number of Reverse Gears ...................... 1
Maximum Forward Speed, mph (kph) ...................... 5.5 (8.8)
Maximum Reverse Speed, mph (kph) ...................... 2.0 (3.2)

Wheels and Tires

Drive Wheels ...................... 2WD 4x2
Steering Configuration ...................... Front steer
Steering System ...................... Manual
Front Tire Size ...................... 16x5.50x8
Rear Tire Size ...................... 22x7.50x12

Dimensions and Weight

Wheelbase, in (mm) ...................... 47 (1190)
Length, in (mm) ...................... 65 (1650)
Height, in (mm) ...................... 41 (1040)
Overall Width, in (mm) ...................... 37 (930)
Weight, lb (kg) ...................... 590 (267)

Sears GT16 Attachments

42" Mower Deck

Mower Deck Model ...................... Sears 25362
Mower Deck Type ...................... Mid-mount
Number of Blades ...................... 3
Cutting Width, in (mm) ...................... 42 (1060)
Cutting Height, in (mm) ...................... 1.5-4.0 (38-102)
Deck Drive ...................... Belt
Lift System ...................... Mechanical
Weight, lb (kg) ...................... 86 (40)