General Information
Tractor Model …………………. Sears SS-16 917.25750
Tractor Type …………………. Garden tractor
Manufacture Years …………………. 1973-1976
Fuel Type …………………. Gasoline
Attachments …………………. Mower Deck, Blade and Snowblower
Sears SS16 Engine
Engine Model …………………. Onan BF-MS
Engine Type …………………. 4-cycle two cylinder air-cooled horizontal-shaft gasoline
Number of Cylinders …………………. 2
Displacement, cu.in (cc) …………………. 40.3 (659)
Engine Bore, in (mm) …………………. 3.13 (79.0)
Engine Stroke, in (mm) …………………. 2.63 (67.0)
Rated Engine Power, hp (kW) …………………. 16.0 (11.9)
Rated Engine Speed, rpm …………………. 3600
Idle Speed, rpm …………………. 1200
Compression …………………. 7.0:1
Fuel System Type …………………. Carburetor
Carburetor Type …………………. Adjustable main jet
Fuel Pump Type …………………. Mechanical
Air Cleaner Type …………………. Paper element
Spark Plug Type …………………. Champion H8
Spark Plug Gap, in (mm) …………………. 0.025 (0.63)
Breaker Point Gap, in (mm) …………………. 0.020 (0.51)
Intake Valve Clearance, in (mm) …………………. 0.007-0.009 (0.18-0.23)
Exhaust Valve Clearance, in (mm) …………………. 0.012-0.014 (0.30-0.35)
Fuel Tank Capacity, gal (L) …………………. 3.0 (11.5)
Oil Capacity, qt (L) …………………. 2.0 (1.9)
Electrical System
Electrical System Rating, Volts …………………. 12
Charging System …………………. Flywheel alternator
Charging System Rating, Amps …………………. 15
Starter Type …………………. Electric
Number of Batteries …………………. 1
Battery AH …………………. 39
Electric Ground …………………. Negative
Power Take Off
PTO Operational Type …………………. Independent
PTO Clutch …………………. Mechanical
PTO Speed, rpm …………………. 2000
Sears SS16 Transmission
Transmission Type …………………. Belt-driven gear
Gearbox Type …………………. 6F/2R
Number of Forward Gears …………………. 6
Number of Reverse Gears …………………. 2
Oil Capacity, qt (L) …………………. 5.0 (4.7)
Maximum Forward Speed, mph (kph) …………………. 6.5 (10.5)
Maximum Reverse Speed, mph (kph) …………………. 2.5 (4.0)
Wheels and Tires
Drive Wheels …………………. 2WD 4×2
Steering Configuration …………………. Front steer
Steering System …………………. Manual
Front Tire Size …………………. 16×6.50×8
Rear Tire Size …………………. 23×9.50×12
Dimensions and Weight
Wheelbase, in (mm) …………………. 47 (1190)
Length, in (mm) …………………. 69 (1745)
Height, in (mm) …………………. 44 (1115)
Overall Width, in (mm) …………………. 36.5 (920)
Weight, lb (kg) …………………. 708 (320)
Sears SS16 Attachments
42″ Mower Deck
Mower Deck Type …………………. Mid-mount, right-discharge
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) …………………. 180 (81)
48″ Mower Deck
Mower Deck Type …………………. Mid-mount, right-discharge
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) …………………. 187 (84)
40″ Snow Blower
Snowblower Type …………………. Front-mount
Clearing Width, in (mm) …………………. 40 (1010)
Lift System …………………. Mechanical
Front Blade
Blade Type …………………. Front-mount
Width, in (mm) …………………. 46 (1160)
Height, in (mm) …………………. 17 (430)
Lift System …………………. Mechanical
Angle …………………. Manual