Tecumseh HH160

The Tecumseh HH160 is a 453 cc (27.6 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine, manufactured by Tecumseh.

The Tecumseh 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:

• HH – Horizontal-Heavy Duty
• 160 – 16.0 HP

General information

Engine Specifications
Model	HH160
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		88.900-88.925 mm (3.5000-3.5010 in)
Piston skirt outer diameter		88.773-88.824 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