First time wing owner, so not a whole lotta experience with these things…
Thx in advance!
Thx in advance!
I'd say either the throttle, "pull" cable", or carb linkage was binding a bit, OR the throttle return spring may not have been strong enough. While all my bikes work fine with the one cable, there is a possibility that the manufacturer made the spring weaker when they use 2 cables, or an old spring could be worn, and possibly about to break. On my '64 Fairlane I replaced the throttle spring a one a lot stronger. Made it harder to push on the pedal, but no worries about the throttle not closing. I like things simple (see signature) so anytime I can safely simplify things, I usually doBack in 'the old days' when I used to race my CB750 at Willow Springs I thought I'd run with only the 'pull' cable. First time on the track I noticed that when I would let off the throttle the rpm's wouldn't drop down…. they sort of hung up and made shifting very difficult.
So I reinstalled the 'push' cable and the shifting and rpm's returned to normal. In my case the answer was YES the push cable was required.
I wonder if Toyota wishes they had a cable at all. All their problems seem to have been caused by their "fly by wire" system, where there is no direct mechanical linkage of any kind between the throttle and fuel injection system. Cables and rod linkage systems can be visually inspected and maintained, computers cannot.
Have you ever seen the throttle return spring on a K2 CB750?? It could be used as a clutch spring on a Chevy 4 speed. It was plenty strong enough….. remember… I was RACING this bike on a track. Throttle cable(s) are checked for proper return during tech inspection. The pull cable was needed on this bike…. it helped the rpm to return.I'd say either the throttle, "pull" cable", or carb linkage was binding a bit, OR the throttle return spring may not have been strong enough.