Tecumseh OH160

Tecumseh OH160The Tecumseh OH160 is a 453 cc (27.6 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine, manufactured by Tecumseh.

The Tecumseh OH160 (the first model year was designated as an HH160) engine has an overhead valve (OHV) design, horizontal PTO shaft, cast-iron cylinder block. This engine is equipped with the Walbro carburetor and solid-state ignition system.

The cylinder bore is 88.9 mm (3.5 in) and the piston stroke is 69.8 mm (2.75 in). This engine produced 16.2 PS (11.9 kW; 16.0 HP) at 3,600 rpm horsepower.

The breakdown of the engine code is as follows:

  • OH – Horizontal-Heavy Duty with valve-in-head design
  • 160 – 16.0 HP

General information

Engine Specifications
Model OH160
Type 4-stroke, OHV, single cylinder
Displacement 453 cm3 (27.6 cu-in)
Max. horsepower 16.2 PS (11.9 kW; 16.0 HP) at 3,600 rpm
Max. torque (crank PTO) –
Fuel system Walbro carburetor
Cooling system Forced-air
Ignition system Solid-state ignition system
Lubricating system Splash type
Starting system Recoil or electric starter
Fuel used Gasoline (octane number 86 or higher)
Fuel tank capacity –

Cylinder Block and Head

Cylinder block
Bore x Stroke 88.9 X 69.8 mm (3.50 x 2.75 in)
Sleeve internal diameter 88.9000-88.9250 mm (3.5000-3.5010 in)
Piston skirt outer diameter 88.7730-88.8240 mm (3.4950-3.4970 in)
Number of piston rings (compression / oil): 2 / 1
Ring end gap Top 0.254-0.508 mm (0.010-0.020 in)
Second 0.254-0.508 mm (0.010-0.020 in)
Piston pin outer diameter 17.465-17.475 mm (0.6876-0.688 in)
Cylinder Head
Valve Arrangement: OHV (overhead valve)
Valves: 2
Valve spring free length: 50.292 mm (1.98 in)

Service Information

Valve clearance
Intake valve clearance 0.127 mm (0.005 in)
Exhaust valve clearance 0.254 mm (0.010 in)
Oil system
Oil type API SF or SE
Recommended oil Summer 30 or 10W-30,
Winter 5W-30, 10W
Oil capacity 1.5 L (1.59 US. qt, 1.32 Imp. qt.)
Ignition system
Spark plug Champion L-82C, L-85
Spark plug gap 0.7-0.8 mm (0.0276-0.0315 in
Fuel system
Carburetor Walbro
High spped adjustment screw 1 turn
Idle adjustment screw 1 turn
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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5 Comments

  1. On this engine spec sheet, you show a piston skirt diameter of 88.7730-88.8240 mm (3.495-3.497 in) but a sleeve ID of 84.125-84.150 mm (3.312-3.313 in). Is this engine sleeved?

    Reply

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