Hi WaterlooJohn, I’ve set Boyer
on 70 Tiger. If it has 70 flywheel it has 2 notches for tdc tool. TDC & 38B. End of day you should own this tool.
I’ve been burned a few times where in real life hash mark lined up to pointer is not actually 38B. Rotor slipped on center. Even so production tolerances can give 1-2 deg error. This is very common.
Easiest way is remove plugs, put in top gear, bike on center stand. Rotate motor looking in spark plug hole to tdc. Stick tool in flywheel & zig zag rear wheel until rod drops into slot. That’s tdc. Again piston will be all the way up. Memorize how it looks. Pull rod up & backwards turn wheel letting rod gently drag on flywheel until it drops into 38B groove.
Practice this a few times to get a feel for it.
With tool rod in 48 slot look at rotor. Hash mark should line up with pointer. Spot on is the ideal. Usually not though. If you’re within 3/32” or so. Scribe a line & use that as the real 38 line. If your hash mark is way off, rotor has slipped on its center, keyway bad or the like. Remove rotor & inspect. If key/ keyway are good, rotor has slipped on center. This is a failure. Needs new rotor. Verify/remark new rotor line. Don’t think it’s good!
Once you learn the true 38 & mark, use the mark & pointer to set timing. Back up motor 3/8” if so. Gently go forward & stop at 38 line. This compensates for backlash in timing gears.
Now set the Boyer
pick up plate lining up bottom hole with paint dot as you were doing.
Start motor & strobe time. 4000rpm.
Motor gets hot fast strobe timing. Put fan in front of motor.
With points full advance was 2000. With Boyer
it’s 3500rpm. You’ll see the line stops moving at full advance. I go a bit more rpm to be sure. Thus the 4000.
Should you run out of slot on pick up plate, you have to move rotor in cam shaft. The direction you need more slot. Then star all over with aligning white dot & strobe timing.
If... you verify 38. Move motor forwards to 38 line. Center slots on pick up plate, Then lock rotor into cam. Back up motor, forwards to 38 line. Verify dot center of hole, you’ll find strobe timing will be easy & you won’t run out of slot.
None of this is complicated. It’s a step by step process that starts with verifying 38B mark is actually 38. Skip a step you’re looking for troubles.
Who knows what white line is? If 38 rotor is junk.
Coil wiring is easy. Just follow picture in instructions.
Is your bike positive ground? Make sure you look at positive ground hook up I tape over the incorrect illustrations & instructions so I don’t get confused. A mistake in wiring can smoke the unit.
Some coils are marked 15 & 1. 15 is +, 1 is -.