1976 Johnson 2HP 2R76 Outboard Motor Service Manual, Page 9Get this manual
SPECIFICATIONS
Model Numbers 2R76 Horsepower (B.I.Acertified) HP at 4500 rpm Full throttle operating range 4200 to 4800 RPM Test tank with test wheel 3900 RPM Test wheel Part Number 316021 Engine typeSingle cylinder, cycle Bore and stroke 1-916" bore 1-38" stroke Piston displacement 2.64 cubic inches Piston ring sets (2 per set) standard Part Number 383920 .030" oversize Part Number 384312 Diameter of ring 1.563 in(standard) Width of ring .0625.0615 inLbscompression recommended when compressed 1.3 to 2.8 lbsPiston and ringsstandard Part Number 384651 .030" oversize piston less rings Part Number 384666 Crankshaft size Top journal .7502.7497 inBottom journal.7502.7497 inConnecting rod crank pin .6690.6685 inCarburetion Single barrel float feed, with high and low-speed adjustments Float level setting Flush with casting Inlet needle seat.050.053 Use #55 drill as gage COOling system Vari-volume pump Propeller gear ratio 12:25 Propeller drive pin Part Number 316558 Propeller 7-14 4-12 Speed control Single lever, synchronized throttle and spark Weight 23 lbsFuel capacity Gravity feed integral tank qtstarter Manual self rewinding Ignition Flywheel magneto Spark plug AC-M44C, Champion J6J14mm Spark plug gap .030 inch Spark plug torque 17-1220-12 foot-pounds Breaker point gap.020 inch Condenser Part Number 580321 Capacity .18 to .22 MfdCoil Part No580971