________________________________________________________________________________

Sears ST16 Technical Data

General Information

Tractor Model ...................... Sears ST-16 917.25940
Tractor Type ...................... Garden tractor
Manufacture Years ...................... 1973-1976
Fuel Type ...................... Gasoline
Attachments ...................... Mower Deck, Blade and Snowblower

Sears ST16 Engine

Engine Model ...................... Tecumseh OH160
Engine Type ...................... 4-cycle single-cylinder OVH air-cooled gasoline engine
Number of Cylinders ...................... 1
Displacement, cu.in (cc) ...................... 27.66 (453.4)
Cylinder Bore, in (mm) ...................... 3.50 (88.9)
Piston Stroke, in (mm) ...................... 2.88 (73.0)
Rated Engine Power, hp (kW) ...................... 16.0 (11.9)
Rated Engine Speed, rpm ...................... 3600
Maximum Torque, Nm (ft-lbs) ...................... 33.9 (25.1)
Torque Speed, rpm ...................... 2800
Compression Ratio ...................... 8.7:1
Crankshaft ...................... Iron alloy
Cylinder ...................... Cast iron alloy
Fuel System Type ...................... Carburetor
Carburetor Type ...................... Float, adjustable jet
Governor Type ...................... Mechanical
Lubrication System ...................... Splash type
Air Cleaner ...................... Paper element
Cooling System ...................... Forced air
Ignition System ...................... Solid state magneto
Spark Plug Type ...................... Champion RL82C
Spark Plug Gap, in (mm) ...................... 0.030 (0.762)
Intake Valve Clearance, in (mm) ...................... 0.005-0.010 (0.13-0.25)
Exhaust Valve Clearance, in (mm) ...................... 0.005-0.010 (0.13-0.25)
Fuel Tank Capacity, gal (L) ...................... 1.8 (6.6)
Oil Capacity, qts (L) ...................... 1.65 (1.56)

Electrical System

Electrical System Rating, Volts ...................... 12
Charging System ...................... Alternator
Alternator Rating, Amps ...................... 20
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 ST16 Transmission

Transmission Type ...................... Belt-driven gear
Gearbox Type ...................... 6F/2R
Number of Forward Gears ...................... 6
Number of Reverse Gears ...................... 2
Maximum Forward Speed, mph (kph) ...................... 6.5 (10.5)
Maximum Reverse Speed, mph (kph) ...................... 2.5 (4.0)

Wheels and Tires

Drive Wheels ...................... 2WD 4x2
Steering Configuration ...................... Front steer
Steering System ...................... Manual
Front Tire Size ...................... 16x5.50x8
Rear Tire Size ...................... 23x9.50x12

Dimensions and Weight

Wheelbase, in (mm) ...................... 43.5 (1100)
Length, in (mm) ...................... 66 (1670)
Height, in (mm) ...................... 40 (1010)
Overall Width, in (mm) ...................... 36.5 (925)
Weight, lb (kg) ...................... 670 (303)

Sears ST16 Attachments

42" Mower Deck

Mower Deck Type ...................... Mid-mount
Number of Blades ...................... 3
Cutting Width, in (mm) ...................... 42 (1060)
Cutting Height, in (mm) ...................... 1.5-4.5 (38-114)
Deck Drive ...................... Belt
Lift System ...................... Mechanical
Weight, lb (kg) ...................... 169 (76)

48" Mower Deck

Mower Deck Type ...................... Mid-mount
Number of Blades ...................... 3
Cutting Width, in (mm) ...................... 48 (1215)
Cutting Height, in (mm) ...................... 1.5-4.5 (38-114)
Deck Drive ...................... Belt
Lift System ...................... Mechanical
Weight, lb (kg) ...................... 182 (82)

42" Snow Blower

Snowblower Type ...................... Front-mount
Clearing Width, in (mm) ...................... 42 (1060)
Lift System ...................... Mechanical

Front Blade

Blade Type ...................... Front-mount
Width, in (mm) ...................... 46 (1160)
Height, in (mm) ...................... 17 (430)
Lift System ...................... Mechanical
Angle ...................... Manual