Throttle Sticking

[ddebonis]

I've not had the chance to solve the sticky throttle, but I have a related issue.

The new cables seem to be settling in... They've become looser at the carbs (From 1mm to 3mm). I tightened them and will have to re-balance the carbs. I am running out of space on the right side carb to take up slack. I should be able to adjust the screw on 1-to-2 splitter to help eliminate slack.

1) Any idea on how long it takes new cables to settle and/or stretch out?

Secondly, is the throttle cable supposed to be secured to the frame at any point? The old one wasn't and I hear older BMW's have a rubber block with holes drilled out to secure cables.

This is their current path: From the carbs, the two cables meet at the splitter which sits on the engine and flops around a bit. Then the single throttle cable goes through the left side of the steering head (passing behind the steering lock) before taking a right turn towards the throttle grip.

2) Does that sound correct?

[montmil]

Did you align the microscopically small line on the throttle tube with the mark on the upper gear before replacing the top cover?

[Bob_Roller]

After you get the splitter reassembled, adjust the adjuster on the splitter before you adjust the two cables that go to the carbs .

You need to adjust the single cable until you have 1-2 mm of freeplay on the cable at the splitter .

There were no mounting or securing points on the throttle cables from the factory .

I've never had any cable stretch issues wth new cables .

The only remote possibility I can think of, is the plastic block or plug that the cables slide into inside the splitter .

Unless it's broken and the slots the cable ends fit into are the same depth, I don't know what else to look for there .

[ddebonis]

Thanks. I'll redo the slack in that order.

Montmil, I did not see a line on the gear or throttle tube.

However, finally I did notice moderate wear on the gears. I had to remove a lot of grease first. There are some burrs, but hopefully after I remove those and add new grease it will be fixed.

[ddebonis]

I de-burred and re-greased worm gear with Lucas Red and Tacky #2 (NLGI) ...and the throttle sticks more than before...

Any ideas?

And Montmil, I found the marks you talked about. Thanks.

[montmil]

I de-burred and re-greased worm gear with Lucas Red and Tacky #2 (NLGI) ...and the throttle sticks more than before...

That's good grease you've used. Perfect for output spline lubricant but a tad heavy for the throttle. Maybe wipe off and leave just a wee bit or use something lighter like a Lubriplate white grease. Remember the old men's hair grease commercial? "Just a touch can do so much"