Topic: Please help identify

[pjandrew99]

Took the cover off and found a washer laying at the bottom. I checked out the parts diagram and can't tell where it came from.
Thanks for the help!
CB750K1

[bryanj]

Looks like a plastic insulating washer from the points bolt to me

[denward17]

Looks like an isolation washer used on the points.  Maybe left over from when the points were changed last ?

[Stev-o]

Looks like a plastic insulating washer from the points bolt to me

+1...but doesnt appear like you are missing one. Maybe from the last time you [or PO] changed the points?

[pjandrew99]

Thanks Guys.
That's a new assembly that I put in last year. I guess it may have come from the old one at one point.
Much appreciated.

[Deltarider]

Save it. Judging by the size, it looks like the insulator that's supposed to sit in the center (hidden) to insulate that tiny bolt from the rest of the breaker. In theory the breaker could have been fit without it and that, just by sheer luck, the little bolt doesn't contact the rest of the breaker. Anyway if that breaker begins to make ground, you know where to look.

[pjandrew99]

Save it. Judging by the size, it looks like the insulator that's supposed to sit in the center (hidden) to insulate that tiny bolt from the rest of the breaker. In theory the breaker could have been fit without it and that, just by sheer luck, the little bolt doesn't contact the rest of the breaker. Anyway if that breaker begins to make ground, you know where to look.

Is this what you are referring to? I see it on both breakers. Maybe it was an extra left in there by mistake when assembled. I can't imagine how else it could have got there. That is, if I'm looking at the correct insulator.
Bike has been running poorly so I am a bit suspicious. Thanks!

[Deltarider]

That's also possible, but not very likely. I'd compare your insulator to the smallest in the pic. Maybe yours is bigger than the tiny one I mean. It cannot be seen from outside. It's deep inside where that tiny bolt goes through the breaker. Below the same pic but in inches. Just measures yours.

[pjandrew99]

Yes, its the smallest one in the picture.
No idea how it could get where I found it. Very strange.

[Tracksnblades1]

Looks like a plastic insulating washer from the points bolt to me

+1…

Do you have a mechanic buddy playing a joke on you…
It’s a classic first timer one…😁

[C317414]

The screw that the points wire connector is insulated from the metal body of the point assembly by three fiber washers: two on the outside of the flange, one under the screw head and one under the nut, plus a small washer with the ID the same as the screw, and the OD, the same as the hole on the flange.  I believe this is what Deltarider mentioned initially.

I had a situation on a car where this washer was cracked.  This resulted in acceptable running at low RPM, but an intermittent miss at high RPM.

In the photo below, the small washer would go in the hole in the flange with the arrow on it:

[Don R]

 You may be a little vibration away from a set of points going to ground. Or it might work forever.

[Kevin D]

It keeps the bolt centered where it passes through the points frame, a necessary part PJ.
The path is from the wires through the bolt to the spring, and not to the grounded points frame.
You can’t see it when assembled.

[pjandrew99]

Thanks guys.
If its a joke it is very cruel! lol And a good one.
I did some very rudimentary continuity testing on the points and both sets were similar. Put it back together and will go from there. Dissecting the points or new ones is an option if the bike continues to run poorly. Looking at everything.
This insulator is an absolute mystery.

[Stev-o]

I did some very rudimentary continuity testing on the points and both sets were similar.

What brand of points are you running?  I ask since you said you are having an issue. Some are known to be defective.

[pjandrew99]

I did some very rudimentary continuity testing on the points and both sets were similar.

What brand of points are you running?  I ask since you said you are having an issue. Some are known to be defective.

I believe they are TEC. They came with the Honda Assembly/ plate, points and condensers.