its manufactured July 29, 1991. HP was around 4.5 but Briggs didn't post those specs.

SKU 121702-0185-01
Technical Specifications

Model Series 1217
Engine Series 600
Displacement 205
Oil Capacity 20 oz (0.6 l)
Valve Configuration L-head
Flywheel Torque 55 lb/ft (74.5 Nm)
Governor Arm Torque 40 lb/in (4.5 Nm)
Carb Mount 40 lb/in (4.5 Nm)
Plug Gap 0.02 in (0.50 mm)
Intake Valve .005-.007 in (.13-.18 mm)
Exhaust Valve .007-.009 in (.18-.23 mm)
Idle Speed 1750
Air Gap .006-.010 in (.15-.25 mm)
Flywheel Puller Part 19069
Flywheel Holder Part 19433
Connecting Rod Torque 100 lb/in (11.5 Nm)
Sump Torque 85 lb/in (9.5 Nm)
Head Torque 140 lb/in (16.0 N