1975 Evinrude 2HP Model 2502 Full Factory Service Manual, Page 9Get this manual
SPECIFICATIONS
Model Numbers 2502 "Horsepower (B.I.A-certified) HP at 4500 rpm Full throttle operating range 4200 to 4800 RPM Test tank with test wheel 3900 RPM est wheel Part Number 316021 Engine type Single cylinder2 cycle Bore and str oke 1- 9 16" bore 1-3 8" stroke Piston displacement2.64 cubic inches Piston ring sets (2 per set) standard Part Number 383920 .030" oversize part Nu mber 384312 Diameter of ring 1563 in(standard) Width of ring .0625.0615 inLbscompression recomme nded when compressed 1.3 to 2.8 lbsPiston and ringsstandard Part NUmber 384651
.030" oversize piston ess rings Part Number 384666
Crankshaft size Top journal .7502.7497 inBottom journal .7502.7497 inConnecting rod crank pin .6690.6685 inCarburetion Single barrel fioat feedwith high and
low- speed adjustments
Float level setting Flush with casting Inlet needle seat .050.053 Use 1155 dr ill as gage Cooling system Centri- matic pump Propeller gear ratio 12:25 Propeller drive pin Part Number 316558 ropeller 7-1 4- 1 Speed control Single leversyncllronized tllrottle and spark Weight 24 IbsFuel capaCity Gravity feed integral tank qtstarter Manual self rewinding Ignition lywheel magneto Spark plug ACM44CChampion J6J14mm Spark plug gap .030 inch Spark plug torque 17120- 1 foot- pounds Breaker point gap .020 inch CondenserPart Number 580321 Capacity.18 to .22 MIdCoil Part No580971