Tecumseh HH160

Tecumseh HH160The Tecumseh HH160 is a 453 cc, (27.6 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft, manufactured by Tecumseh for general-purpose applications.

It has an 88.9 mm (3.5 in) cylinder bore and 69.8 mm (2.75 in) piston stroke. The Tecumseh HH160 engine produced 16.2 PS (11.9 kW; 16 HP) at 3,600 rpm of maximum output power.

The Tecumseh HH160 features:

  • Cast-iron cylinder block
  • OHV (overhead valve) design
  • Solid-state ignition system
  • Walbro carburetor
  • Splash type lubrication system
  • Forced air cooling system
  • Recoil or electric starter

General information

Engine Specifications
Engine model HH160
Engine type 4-stroke, OHV, single-cylinder
Displacement 453 cm3, (27.64 cu·in)
Max. horsepower 16.2 PS (11.9 kW; 16.0 HP) at 3,600 rpm
Max. torque
Cooling system Forced air
Lubricating system Splash
Ignition system Solid-state
Fuel system Walbro carburetor
Fuel used Gasoline (octane number 86 or higher)
Starting system Recoil or electric starter
PTO shaft rotation Counterclockwise (from PTO shaft side)
Dimensions (L x W X H)
Dry weight

Cylinder Block and Head

Cylinder block
Compression ratio:
Cylinder bore: 88.9 mm (3.5 in)
Piston stroke: 69.8 mm (2.75 in)
Cylinder internal diameter (standard): 88.9000-88.9250 mm (3.5-3.501 in)
Piston skirt outer diameter (standard): 88.7730-88.8240 mm (3.495-3.497 in)
Number of piston rings (compression / oil): 2/1
Piston pin diameter: 17.4650-17.4750 mm (0.6876-0.688 in)
Side clearance ring groove (Top): 0.038-0.089 mm (0.0015-0.0035 in)
Side clearance ring groove (Second): 0.038-0.089 mm (0.0015-0.0035 in)
Ring end gap (Top): 0.254-0.508 mm (0.01-0.02 in)
Ring end gap (Top): 0.254-0.508 mm (0.01-0.02 in)
Crankpin journal diameter: 34.925-34.938 mm (1.375-1.3755 in)
Carnkshaft seat diameter for roller bearings: 30.137-30.150 mm (1.186-1.187 in)
Crankshaft center distance: 34.9 mm (1.375 in)
Cylinder head
Valve arrangement: OHV, gear driven
Valves: 2
Valve seat angle: 46°
Valve seat width: 1.067-1.321 mm (0.0420-0.052 in)
Valve face angle: 45°
Valve lip width: 1.524 mm (0.060 in)
Valve face width: 3.378 mm (0.1330 in)
Valve spring free length (INTAKE): 50.292 mm (1.98 in)
Valve spring free length (EXHAUST): 50.292 mm (1.98 in)

Service Data

Valve clearance
Intake valve clearance: 0.127 mm (0.005 in)
Exhaust valve clearance: 0.2540 mm (0.010 in)
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.)
Fuel system
Type: Walbro carburetor
Ignition system
Type: Solid-state
Spark plug: Champion L-82C, L-85
Spark plug gap: 0.7-0.8 mm (0.0276-0.0315 in)
Ignition coil air gap 0.152-0.254 mm (0.006-0.01 in)

Tightening torque

Tightening torque specs
Connecting rod screw or nut 20.3-27.1 Nm (15.0-20.1 ft-lbs)
Mounting flange cylinder cover screw 9.7-12.4 Nm (7.2-9.2 ft-lbs)
Cylinder cover flywheel end 11.3-14.7 Nm (8.4-10.9 ft-lbs)
Flywheel nut 13.6-18.1 Nm (10.1-13.4 ft-lbs)
PTO shaft to flywheel 67.8-74.6 Nm (50.2-55.3 ft-lbs)
Spark plug 11.3-14.1 Nm (8.4-10.4 ft-lbs)
Intake pipe to cylinder 24.9-31.6 Nm (18.4-23.4 ft-lbs)
Carburetor to intake pipe 8.1-10.9 Nm (6.0-8.1 ft-lbs)
Air cleaner elbow to carburetor 5.4-8.1 Nm (4.0-6.0 ft-lbs)
Air cleaner bracket to elbow 2.8-4.0 Nm (2.1-3.0 ft-lbs)
Air cleaner bracket to carburetor 1.7-2.8 Nm (1.3-2.1 ft-lbs)
Tank bracket to cylinder (5/16′ lower) 1.7-2.8 Nm (1.3-2.1 ft-lbs)
Tank bracket to cylinder (1/4′) 17.0-22.6 Nm (12.6-16.7 ft-lbs)
Starter-recoil-top mount 10.9-13.6 Nm (8.1-10.1 ft-lbs)
Starter-electric-straight drive 4-5-6.8 Nm (3.0-4.1 ft-lbs)
Rope start pulley mounting screws 15.8-19.2 Nm (11.7-14.2 ft-lbs)
Rocker arm box to cylinder head 6.8-8.5 Nm (4.1-6.3 ft-lbs)
Rocker arm cover and breather (screw to stud) 9.0-10.2 Nm (6.7-7.6 ft-lbs)
Rocker arm adjusting screw lock nut 1.7-2.3 Nm (1.3-1.7 ft-lbs)
Magneto stator mounting screw 2.3-3.4 Nm (1.7-2.5 ft-lbs)
Blower housing to baffle or cylinder 8.1-10.9 Nm (6.0-8.1 ft-lbs)
Housing baffle to cylinder 5.4-8.1 Nm (4.0-6.0 ft-lbs)
Blower housing extension to cylinder 8.1-10.9 Nm (6.0-8.1 ft-lbs)
Governor rod clamp to rod (screw and nut) 8.1-10.9 Nm (6.0-8.1 ft-lbs)
Governor rod clamp to lever (screw and nut) 1.7-2.8 Nm (1.3-2.1 ft-lbs)
Ground wire to terminal 1.7-2.3 Nm (1.3-1.7 ft-lbs)
Toggle stop switch nut 0.6-1.1 Nm (0.4-0.8 ft-lbs)
Oil drain plug 3/8-18 1.1-1.7 Nm (0.8-1.3 ft-lbs)
Oil drain cap 9.0-11.3 Nm (6.7-8.3 ft-lbs)


Manufacturer or Brand Models
Lawn tractors
Wheel Horse C-160
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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We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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