Where is the adjustment on the throttles to stiffen them up? I am losing rpms while hitting waves. 99 42 Lightning 500 efi Thanks Daryl

Look thru the rubber boot for an allen head screw. You may have to move the throttle up to see it. Turning it in will increase the spring pressure to the piston which will increase the friction.

I had one of the spring break so if you can not obtain the fell you want check for a broken spring.

Gig

Thanks I'll Check Wednesday.

The set screws were the ticket Thanks! Now what is the correct way to adjust the throttles to keep them even, level at same rpm.