Topica Loopframe_Guzzi Archive


Subject: Re: Neutral sensor

Author: Hunter Jones

Date: Mar 23, 2001, 9:24 PM

Post ID: 1706014550



Hi Paul,

I think I can help your neutral light woes.
The neutral light switch consists of two basic parts:
1) a highly sophisticated straight piece of brass with a little bend at the
end and
2) a bump.
The bump is on the shift drum that controls the shift forks that bang all
the expensive steel bits into each other at the riders whim.
The deal is this: If you happen to get the bike into neutral (I learned
eventually) the bump on the shift drum should be in the one and only spot
that will allow it to contact the...uhhhh...contact. This grounds the
neutral light circuit and the lamp comes on (I have a green one).
I learned as you have (the hard way) that when you go screwin' around with
the connector there on the transmission the whole plan heads down Anarchy
Avenue to get a beer. What happened is that when the nut on the stud is
disturbed on the thirty-ish year old transmission the stud gets turned out
of position. The contact is a wide flat beast and if not in PERFECT
alignment with the shift drum (as well as a couple of the moons around
Jupiter) then neutral becomes a game of clutch fanning and stalled engines.
The fix: Just take it out. No, not permanently! It is no big deal. Remove
the two bolts there and pull. It has a gasket under it, but since they all
weep there, why worry about that? Look in the hole at the shift drum with
the transmission in neutral. See the bump? Now turn the contact back to the
correct orientation. The bend at the end should turn away from the drum.
Have all the wires on it, if possible, and put it back in the transmission.
Give it a try. Better? No!?! Do it again.
Don't be disheartened if it takes a couplathree tries to find the best
spot. You can actually turn the contact (that's what caused this in the
first place) without removing the assembly BUT sometimes the problem is the
angle of the contact relative to the shift drum. Too close and it's on all
the time. Too far away and no light ever. Try it, look at it, learn it.
I'm thinking of adding some more bumps to my shift drum. Each gear on my
Eldo has at least 2 neutrals. ;-)

Hunter

I'll be glad to help further if you need it. Seriously.


At 05:00 AM 3/23/2001 -0800, you wrote:
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All
I removed the wire from the sensor last night to do some re routing and
after re attaching, the neutral light does not come on in neutral. I
worked on it for over an hour and cant seem to get it adjusted. Sometimes
it shows neutral in 1,2 and neutral. Sometimes neutral in neutral and 2nd
gear.
Anyone have any tips, ideas from your own experience??
Thanks
Pete
71 Ambo

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