1988-1995 Mercury Force 5HP Outboards Service Manual, 90-823263 793, Page 105Get this manual
9 Check breaker point tension Tension must be 16 to 32 ozmeasured at right angles to surface at center of contactToo little tension: Allows breaker points to bounce, causing ignition advance to vary and leading to premature power head failureToo much tension: Causes premature pOint follower wear, which leads to poor performance