I have a 1969 Johnson 1.5 hp that i have recently been given to tune up. Have replaced the coil, points, plug wire etc and am ready to test it. However the shearpin has broken and am a few hundred miles from the nearest Johndon dealer. Is there soemnthing I can use in place of this just to test start it until i order a new pin, (will test it in a drum). Is the pin necessary just to fire it up?<br /><br />Thanks gang