Briggs and Stratton 289707

Briggs and Stratton 289707The Briggs and Stratton 289707 is a 465 cc (28.38 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine, manufactured by Briggs and Stratton.

The B&S 289707 engine has an L-head (side valve) design and a vertical PTO shaft. This engine is equipped with float type carburetor and an electronic ignition system. The B&S 286707 engine used a paper air filter with a foam pre-cleaner.

The cylinder bore is 87.30 mm (3.44 in) and the piston stroke is 77.7 mm (3.06 in). This engine produced 12.6 PS (9.3 kW; 12.5 HP) at 3,600 rpm of horsepower.

The breakdown of the engine code is as follows:

  • 28 – Displacement
  • 9 – Basic design series
  • 7 – Vertical PTO-shaft
  • 0 – Plain bearing
  • 7 – Electric starter

General information

Engine Specifications
ModelB&S 289707
Type4-stroke, L-head, single-cylinder
Displacement465 cm 3 (28.38 cu-in)
Max. horsepower12.6 PS (9.3 kW; 12.5 HP) at 3,600 rpm
Max. torque
Fuel systemCarburetor
Cooling systemForced-air
Ignition systemElectronic
Lubricating systemFull pressure
Starting systemElectric starter
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel tank capacity

Cylinder Block and Head

Cylinder block
Compression ratio:
Bore x Stroke87.3 mm X 77.7 mm (3.44 x 3.06 in)
Sleeve internal diameter87.300-87.400 mm (3.437-3.4409 in)
Number of piston rings (compression / oil):2 / 1
Side clearanceTop0.05-0.12 mm (0.002-0.0047 in)
Second0.05-0.12 mm (0.002-0.0047 in)
Oil0.05-0.12 mm (0.002-0.0047 in)
Ring end gapTop0.15-0.23 mm (0.0059-0.0091 in)
Second0.35-0.45 mm (0.0138-0.0177 in)
Oil0.15-0.25 mm (0.0059-0.0098 in)
Connecting rod small end ID20.330-20.370 mm (0.8004-0.802 in)
Piston pin outer diameter20.290-20.310 mm (0.7988-0.7996 in)
Cylinder Head
Valve Arrangement:L-head (sidevalve)
Valve steam diameterINTAKE5.920-5.970 mm (0.233-0.235 in)
EXHAUST5.920-5.970 mm (0.233-0.235 in)

Tightening torque specs

Tightening torque specs
Air cleaner base6.0 Nm; 4.4 ft·lb
Alternator2.0 Nm; 1.5 ft·lb
Armature3.0 Nm; 2.2 ft·lb
Blower housings10.0 Nm; 7.4 ft·lb
Blower housing brackets10.0 Nm; 7.4 ft·lb
Breather3.0 Nm; 2.2 ft·lb
Carburetor to intake manifold8.0 Nm; 5.9 ft·lb
Carburetor solenoid5.0 Nm; 3.7 ft·lb
Connecting rod17.0 Nm; 12.6 ft·lb
Control bracket3.0 Nm; 2.2 ft·lb
Crankcase cover25.0 Nm; 18.5 ft·lb
Cylinder head25.0 Nm; 18.5 ft·lb
Cylinder shield5.0 Nm; 3.7 ft·lb
Exhaust manifold / adapter19.0 Nm; 14.0 ft·lb
Flywheel nut135.0 Nm; 100.0 ft·lb
Flywheel fan16.0 Nm; 11.9 ft·lb
Fuel pump10.0 Nm; 7.4 ft·lb
Governor lever nut5.0 Nm; 3.7 ft·lb
Intake manifold to cylinder head10.0 Nm; 7.4 ft·lb
Muffler10.0 Nm; 7.4 ft·lb
Oil drain plug11.0 Nm; 8.1 ft·lb
Oil fill tube10.0 Nm; 7.4 ft·lb
Oil pump cover10.0 Nm; 7.4 ft·lb
Regulator / rectifier5.0 Nm; 3.7 ft·lb
Rewind starter3.0 Nm; 2.2 ft·lb
Rocker ball set screw or nut5.0 Nm; 3.7 ft·lb
Starter clutch88.0 Nm; 65.2 ft·lb
Starter motor16.0 Nm; 11.9 ft·lb
Rocker cover7.0 Nm; 5.2 ft·lb

Service Information

Max speed3,600 rpm
Valve clearance
Intake valve clearance0.08-0.13 mm (0.003-0.005 in)
Exhaust valve clearance0.13-0.18 mm (0.005-0.007 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)1.42 L (1.5 US. qt, 1.25 Imp. qt.)
Ignition system
Spark plugChampion RJ-19LM
Spark plug gap0.7-0.8 mm (0.0276-0.0315 in)
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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    • Basically any B&S 12-16 HP with electric start and gravity feed carb.

      I did replace one with a Kohler 17 HP, though it was “bolt in” it did require hood modification (too high and too long), rewiring the charge circuit, and redoing the throttle body. For most people just sticking with a same type B&S is the best bet. Carroll Stream probably has the most reasonable prices.

  1. I this model engine Briggs 12.5 hp 289707 code 9311304E Type 011301 I am wondering if this engine has a voltage regulator and so far I have not found one. Thanks

    • Search on e-replacements for the tri-circuit. Here is the thing, if your flywheel is really stuck on, you can nuke the whole engine with hammering. I ended removing my flywheel eventually with a heat gun (be careful of the plastic ring gear), impact wrench, and $130 OTC bearing puller (used the H adapter). The engine failed shortly after the flywheel replacement. I really should have just gone with an external alternator instead of ruining a good running engine to replace the bad stator.

  2. Hallo. Mein Motor geht nach ca. 15s aus. Kann sofort wieder starten mit Choke, geht wieder nach 15s aus. Ich habe alle Filter, den Vergaser, öl gewechselt. Keine Änderung. Hat der Motor eine Ölmängel Sicherung? Vielen Dank. Mfg rh

  3. Bonjour je recherche un moteur moteur BRIGGS ET STRATTON Reference 286707 /type 1185-E1 / CODE 020430ZD

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