Briggs and Stratton engines

Briggs and Stratton general-purpose engines model decode:

Example: 3-0-3-4-4-7

SymbolModifications
30Cubic inch displacement:
30 – 30 cu.in
3Basic design series:
0-9
A-Z
4Crankshaft orientation:
0-4 – Horizontal shaft
5-9 – Vertical shaft
A-G – Horizontal shaft
H-Z – Vertical shaft
4PTO bearing, reduction gear, auxiliary drive, lubrication:
0 – Plain bearing/DU, Non-flange mount
1 – Plain bearing, Flange mounting
2 – Sleeve bearing, Flange mounting, Splash lubrication
3 – Ball bearing, Flange mounting, Splash lubrication
4 – Ball bearing, Flange mounting, Pressure lubrication
5 – Plain bearing, Gear reduction (6 to 1) CCW Rotation, Flange mounting
6 – Ball bearing, Gear reduction (2 to 1) CCW Rotation
7 – Plain bearing, Pressure lubrication
8 – Plain bearing, Auxiliary drive (PTO) perpendicular to crankshaft
9 – Plain bearing, Auxiliary drive parallel to crankshaft
A – Plain bearing, Pressure lubrication w/o oil filter
4Type of starter:
0 – Without starter
1 – Rope starter
2 – Rewind starter
3 – Electric starter only (110V or 230V), Gear drive
4 – Electric starter (110V or 230V), Gear drive with alternator
5 – Electric starter only (12V or 24V), Gear drive
6 – Alternator only
7 – Electric starter (12V or 24V), Gear drive with alternator
8 – Vertical pull starter or side pull starter
9 – Mechanical starter
A – Electric starter (12V or 24V), Gear drive with alternator and inverter
EngineDisplacementPower output (max.)
Single-cylinder
252707399 cc (24.35 cu.in.)11.0 HP at 3,600 rpm
253707399 cc (24.35 cu.in.)11.0 HP at 3,600 rpm
281707465 cc (28.4 cu.in.)12.0 HP at 3,600 rpm
282707465 cc (28.4 cu.in.)12.0 HP at 3,600 rpm
286707465 cc (28.4 cu.in.)12.5 HP at 3,600 rpm
289707465 cc (28.4 cu.in.)12.5 HP at 3,600 rpm
28M707465 cc (28.4 cu.in.)13.0 HP at 3,300 rpm
28N707465 cc (28.4 cu.in.)15.5 HP at 3,300 rpm
28Q777465 cc (28.4 cu.in.)15.5 HP at 3,300 rpm
28R707465 cc (28.4 cu.in.)13.5 HP at 3,300 rpm
28S777465 cc (28.4 cu.in.)13.5 HP at 3,300 rpm
310707501 cc (30.6 cu.in.)16.5 HP at 3,600 rpm
311707501 cc (30.6 cu.in.)16.5 HP at 3,600 rpm
311777501 cc (30.6 cu.in.)17.0 HP at 3,600 rpm
31A607501 cc (30.6 cu.in.)15.5 HP at 3,600 rpm
31C707501 cc (30.6 cu.in.)17.5 HP at 3,600 rpm
31E777501 cc (30.6 cu.in.)16.0 HP at 3,600 rpm
31F707501 cc (30.6 cu.in.)17.0 HP at 3,600 rpm
31G777501 cc (30.6 cu.in.)17.5 HP at 3,300 rpm
31H777501 cc (30.6 cu.in.)18.0 HP at 3,600 rpm
31N707501 cc (30.6 cu.in.)18.5 HP at 3,600 rpm
31P777501 cc (30.6 cu.in.)18.5 HP at 3,600 rpm
31P977501 cc (30.6 cu.in.)20.0 HP at 3,600 rpm
31Q777501 cc (30.6 cu.in.)18.5 HP at 3,300 rpm
31R777501 cc (30.6 cu.in.)15.5 HP at 3,300 rpm
31R977501 cc (30.6 cu.in.)17.5 HP at 3,600 rpm
331777540 cc (32.9 cu.in.)20.0 HP at 3,600 rpm
331877540 cc (32.9 cu.in.)21.0 HP at 3,600 rpm
Two-cylinder
294447480 cc (29.3 cu.in.)14.0 HP at 3,600 rpm
303447495 cc (30.2 cu.in.)16.0 HP at 3,600 rpm
303777495 cc (30.2 cu.in.)16.0 HP at 3,600 rpm
350447570 cc (34.8 cu.in.)18.0 HP at 3,600 rpm
350777570 cc (34.8 cu.in.)18.0 HP at 3,600 rpm
351777570 cc (34.8 cu.in.)20.0 HP at 3,600 rpm
386447627 cc (38.2 cu.in.)23.0 HP at 3,600 rpm
386777627 cc (38.2 cu.in.)23.0 HP at 3,600 rpm
400707655 cc (40.0 cu.in.)16.0 HP at 3,600 rpm
402437655 cc (40.0 cu.in.)16.0 HP at 3,600 rpm
402707655 cc (40.0 cu.in.)16.0 HP at 3,600 rpm
40G777656 cc (40.0 cu.in.)20.0 HP at 3,600 rpm
40H777656 cc (40.0 cu.in.)22.0 HP at 3,600 rpm
422447694 cc (42.3 cu.in.)18.0 HP at 3,600 rpm
422707694 cc (42.3 cu.in.)18.0 HP at 3,600 rpm
42A707694 cc (42.3 cu.in.)18.0 HP at 3,600 rpm
44P777724 cc (44.2 cu.in.)26.0 HP at 3,600 rpm
49M877810 cc (48.4 cu.in.)30.0 HP at 3,600 rpm