Tecumseh V50

Tecumseh V50The Tecumseh V50 is a 200 cc, (12.2 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine, from the V-series (Vertical shaft), manufactured by Tecumseh for general-purpose applications.

It has an 66.67 mm (2.62 in) cylinder bore and 57.15 mm (2.25 in) piston stroke. Compression ratio rating is 5.67:1. The Tecumseh V50 engine produced 5.0 PS (3.7 KW; 5.0 HP) at 3,600 rpm of maximum output power.

The Tecumseh V50 features:

  • Aluminum cylinder block
  • L-head (sidevalve) design
  • Magneto ignition system
  • Float type carburetor
  • Pressurized lubrication system
  • Forced air cooling system
  • Recoil or electric starter

General information

Engine Specifications
Engine modelV50
Engine type4-stroke, L-head, single-cylinder
Displacement200 cm3, (12.18 cu·in)
Max. horsepower5.0 PS (3.7 KW; 5.0 HP) at 3,600 rpm
Max. torque
Cooling systemForced air
Lubricating systemPressurized
Ignition systemMagneto ignition
Fuel systemFloat type carburetor
Fuel usedGasoline (octane number 86 or higher)
Starting systemRecoil or electric starter
PTO shaft rotationCounterclockwise (from PTO shaft side)
Dimensions (L x W X H)
Dry weight

Cylinder Block and Head

Cylinder block
Compression ratio:5.67:1
Cylinder bore:66.67 mm (2.62 in)
Piston stroke:57.15 mm (2.25 in)
Cylinder internal diameter (standard):66.675-66.700 mm (2.6250-2.6260 in)
Piston skirt outer diameter (standard):66.573-66.586 mm (2.6210-2.6215 in)
Number of piston rings (compression / oil):2/1
Piston pin diameter:
Side clearance ring groove (Top):0.051-0.102 mm (0.002-0.004 in)
Side clearance ring groove (Second):0.051-0.102 mm (0.002-0.004 in)
Side clearance ring groove (Oil):0.051-0.102 mm (0.002-0.004 in)
Ring end gap (Top):0.051-0.102 mm (0.002-0.004 in)
Ring end gap (Top):0.254-0.508 mm (0.01-0.02 in)
Crankpin journal diameter:26.962-26.975 mm (1.0615-1.0620 in)
Carnkshaft seat diameter for roller bearings:25.362-25.375 mm (0.9985-0.9990 in)
Cylinder head
Valve arrangement:L-head, gear driven
Valve seat angle:46°
Valve seat width:1.067-1.321 mm (0.042-0.052 in)
Camshaft bearing:15.824-15.837 mm (0.6230-0.6235 in)

Service Data

Valve clearance
Intake valve clearance:0.203 mm (0.008 in)
Exhaust valve clearance:0.305 mm (0.012 in)
Oil type:API SF or SE
Recommended oil: Summer 30 or 10W-30,
Winter 5W-30, 10W
Oil capacity:0.81 liters (0.86 US.qts, 0.71 Imp. qts)
Fuel system
Type:Float type carburetor
Ignition system
Type:Magneto ignition
Spark plug:Champion RJ8C
Spark plug gap:0.7-0.8 mm (0.0276-0.0315 in)

Tightening torque

Tightening torque specs
Cylinder head bolts22.5 Nm (2.3 kgf·m; 16.6 ft·lb)
Connecting rod bolts24.0 Nm (2.4 kgf·m; 17.7 ft·lb)
Cylinder cover or flange13.0 Nm (1.3 kgf·m; 9.6 ft·lb)
Flywheel nut54.0 Nm (5.5 kgf·m; 39.9 ft·lb)
Spark plug28.5 Nm (2.9 kgf·m; 21 ft·lb)
Ignition mounting (to stud)5.0 Nm (0.5 kgf·m; 3.7 ft·lb)
Intake pipe to cylinder13.5 Nm (1.4 kgf·m; 10 ft·lb)
Carburetor to intake pipe8.0 Nm (0.8 kgf·m; 5.9 ft·lb)
Muffler mounting13.0 Nm (1.3 kgf·m; 9.6 ft·lb)
Muffler mounting flanged9.0 Nm (0.9 kgf·m; 6.6 ft·lb)
Magneto stator to cylinder7.5 Nm (0.8 kgf·m; 5.5 ft·lb)
Recoil starter (Top mount)5.5 Nm (0.6 kgf·m; 4.1 ft·lb)
Electric starter to cylinder 7.5 Nm (0.8 kgf·m; 5.5 ft·lb)
11.0 Nm (1.1 kgf·m; 8.1 ft·lb)


Manufacturer or BrandModels
Lawn tractors
John Deere55
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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