Re: 1963 Gale
I'm not exactly familiar with the Gale but I've got a RX-10 (Johnson 28hp 1962) which I'm guessing is the Gale's twin brother. Anyway, here's a couple tests you might want to try:<br /><br />1) The two small black wires coming from the armature plate kill ignition on the top or bottom cyl. when grounded. One should lead to a pressure cutout switch (round thing with a hose connected to the manifold). If you have one and it's malfunctioning it could be killing the spark on one cylinder when your sparkplugs are in. You might want to test for spark with the sparkplugs in place.<br /><br />2) If you've got a DMM (Digital Multi Meter), disconnect each black wire from the armature plate and test the resistance of each armature plate wire to ground. As you *slowly* rotate the flywheel, the resistance should drop *very slightly* to 0 as the mark on the flyweel aligns between the marks on the armature plate. There are two marks on the flywheel for top & bottom (180 deg. appart). This will tell you if the points are set correctly (.020 gap when wide open). You could also check this with a timming light.<br /><br />3) To check the timming between the carb and the spark advance (rotation of armature plate - your armature plate *does* rotate with the throttle doesn't it?!? These do get stuck..) open the throttle until the throttle plate *just* begins to move. At this point the mark on the brass cam attached to the armature plate should align with the pointer (thing sticking up) on the intake manifold. This can be adjusted from the doey where the carb's plate is attached to the linkage. <br /><br />4) Perhaps 0?? Make sure the correct plug lead is on the correct spark plug! Try getting it to fire with the wires swapped. Alternatively, you could trace one of the sparkplug wires to where it enters through the armature plate. Then find the magnetic part of the flywheel (one of the indents on the flywheel just below the shiny cog part should attract a screwdriver). Align these two points and check the depth of each piston by sticking a screwdriver through the spark plug hole. The piston closest to the spark plug hole should be attached to the sparkplug wire you traced. <br /><br />I hope this helps!