Briggs and Stratton 294447

Briggs and Stratton 294447The Briggs and Stratton 294447 Vanguard is a 480 cc (29.3 cu·in) V-twin air-cooled four-stroke internal combustion gasoline engine, manufactured by Briggs and Stratton.

The B&S 294447 engine has an OHV (over-head valve) design and a horizontal PTO shaft. This engine is equipped with float type, down-draft carburetor and an electronic ignition system. The B&S 294447 engine used dual element air cleaner.

The cylinder bore is 68.0 mm (2.68 in) and the piston stroke is 66.0 mm (2.6 in). This engine produced 14.1 PS (10.4 kW; 14.0 HP) at 3,600 rpm of horsepower.

The breakdown of the engine code is as follows:

  • 29 – Displacement
  • 4 – Basic design series
  • 4 – Horizontal PTO-shaft
  • 4 – Ball bearing, flange mounting, pressure lubrication
  • 7 – Electric starter

General information

Engine Specifications
ModelB&S 294447 Vanguard
Type4-stroke, L-head, V-twin
Displacement480 cm 3 (29.3 cu-in)
Max. horsepower14.1 PS (10.4 kW; 14.0 HP) at 3,600 rpm
Max. torque
Fuel systemFloat type, down-draft carburetor
Cooling systemForced-air
Ignition systemElectronic
Lubricating systemFull pressure with oil pump
Starting systemElectric starter
Fuel usedGasoline
Fuel tank capacity

Cylinder Block and Head

Cylinder block
Compression ratio:
Bore x Stroke68.0 mm X 66.0 mm (2.68 x 2.60 in)
Sleeve internal diameter68.000-68.030 mm (2.6772-2.6783 in)
Number of piston rings (compression / oil):2 / 1
Side clearanceTop0.045-0.076 mm (0.0018-0.003 in)
Second0.045-0.076 mm (0.0018-0.003 in)
Oil0.110-0.150 mm (0.0043-0.0059 in)
Ring end gapTop0.200-0.400 mm (0.0079-0.0157 in)
Second0.200-0.400 mm (0.0079-0.0157 in)
Oil0.200-0.400 mm (0.0079-0.0157 in)
Connecting rod small end ID17.090-17.100 mm (0.6728-0.6732 in)
Piston pin outer diameter17.070-17.080 mm (0.672-0.6724 in)
Cylinder Head
Valve Arrangement:OHV
Valves:4 (2 per cylinder)
Valve steam diameterINTAKE5.950-5.960 mm (0.2343-0.2346 in)
EXHAUST5.940-5.950 mm (0.2339-0.2343 in)

Tightening torque

Tightening torque specs
Air cleaner base7.0 Nm; 5.2 ft·lb
Air cleaner support bracket7.0 Nm; 5.2 ft·lb
Alternator2.0 Nm; 1.5 ft·lb
Armature3.0 Nm; 2.2 ft·lb
Blower housings7.0 Nm; 5.2 ft·lb
Back plate7.0 Nm; 5.2 ft·lb
Breather3.0 Nm; 2.2 ft·lb
Carburetor to manifold7.0 Nm; 5.2 ft·lb
Connecting rod19.0 Nm; 9.6 ft·lb
Crankcase cover17.0 Nm; 12.6 ft·lb
Cylinder head19.0 Nm; 14.1 ft·lb
Cylinder shield7.0 Nm; 5.2 ft·lb
Exhaust manifold17.0 Nm; 12.6 ft·lb
Flywheel nut175.0 Nm; 129.6 ft·lb
Fan Retainer17.0 Nm; 12.6 ft·lb
Governor lever nut8.0 Nm; 5.9 ft·lb
Governor control bracket16.0 Nm; 11.9 ft·lb
Intake manifold to cylinder head16.0 Nm; 11.9 ft·lb
Oil pump7.0 Nm; 5.2 ft·lb
Rewind starter (to blower housing)7.0 Nm; 5.2 ft·lb
Rocker arm lock nut11.0 Nm; 8.2 ft·lb
Starter motor16.0 Nm; 11.9 ft·lb
Starter motor thru bolts6.0 Nm; 4.4 ft·lb
Valve cover3.0 Nm; 2.2 ft·lb

Service Information

Engine
Max speed3,600 rpm
Valve clearance
Intake valve clearance0.10-0.15 mm (0.004-0.006 in)
Exhaust valve clearance0.10-0.15 mm (0.004-0.006 in)
Oil system
Oil typeAPI SF, SG, SH, SJ or higher
Recommended oil Summer: SAE 30, 10W-30
Winter: SAE 5W-30
Oil capacity (with filter)1.53 L (1.62 US. qt, 1.35 Imp. qt.)
Ignition system
Spark plugChampion RC12YC
Spark plug gap0.7-0.8 mm (0.0276-0.0315 in)
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

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