Speedster Carb Cable Adjustments

[Jnz]

Any tips or tricks when installing carbs on each motor and having to adjust the throttle cables and oil pump cable? I have the manual just wondering if there's any other tips to make things easier. Twin 787s

 

[Dr Honda]

OK..........


1) push the throttle to full.

2) Adjust the cable length on the MAG side carb, (using the 2 stop nuts at the carb) so the throttle arm, on the carb, JUST misses the physical stop on the carb body. This is important !! If you have it hitting the stop... then you will wind up breaking the cable, because of stress, when pushing the throttle handle.

3) Adjust the link between the carbs so the butterflies are at the same position.

4) bring it to the idle position, and verify that the butterflies are still in alignment. (should be as long as the carb bolts are tight)

5) Repeat on the second engine.


NEXT...

6) With the throttles at idle...

7) adjust the cable at the oil pump, so that the line on the arm, is in-line with the scribe mark on the pump body. It's not easy to see, and you will probably need a little mirror.



At that point... you are properly adjusted.


With that all said.... there is a VERY small chance that both engines will be at the exact same RPM when holding the throttle handles side by side. Some people try to adjust the cables to "FIX" this supposed problem... but DO NOT do that. The reason they give you 2 throttle levers is so you can set them separately, while at cruse.

 

[MLars]

Also to help see things pick up one of those cheap led extendable mirrors. I couldn't have done mine without it. And take off the airbox and everything until you get to the carb, this will give you much easier access to the cables.

 

[Jnz]

Thank you, I was just concerned as I seen in the manual adjustments may have to be made at the carbs and at the shifter lever. Was hoping to find a good starting point so I don't have to go back and forth with the adjustments.

 

[MLars]

When I did mine I just set the shifter one directly in the middle, then adjusted the carb one and was all set

 

[Jnz]

Where are the oil alignment lines?

 

[Jnz]

Do these arrows look like the marks i'm looking for?

 

[MLars]

Yes. The lines on the arm and that little metal circle should line up

 

[Jnz]

Got it together and all adjusted. The steering throttle may need some adjusting as it seems to only work one direction at the dock. Some other issues, but I'll create a new thread as I don't think its related to the cable adjustments.