Throttle hard to turn

[pasteurized]

Ever since I have had my '77 750 (2 years) it has had a very resistive throttle. I know a lot of this is the return spring on the carbs but if I replace it with a lighter one, it isn't strong enough to return the slides on the VM carbs to idle. I have not replaced/lubed the throttle cable, which I assume should help a bit. I don't think it would have that much effect on it though. Getting on any of my friends' more modern bikes (92,94,00, etc) I have to be WAY careful with my throttle control or else I will wheelie any of their bikes with the same effort it takes to just get mine up to speed.

Is this normal? Also, any ride longer than about 20 miles or so my right hand/arm feels like it is going to fall off from having to try so hard.

[Dink]

Sounds like some sort of binding in the carb itself.
Might be time to dis-assemble the rack and investigate, maybe hardened o-rings causing binding.

Dink

[Tarbash 27]

you can be suprised how much it will help by lubing the cable and greasing the throttle. definately do that. it made a huge difference on my bike.

[bradleymaynar]

I'll second both sentiments. Start simple and lube the cable first. A replacement might even be in order. If that doesn't fix it, then I'd be prepared to rebuild the carbs.

Brad tt

[pasteurized]

Cool, I'll do those things then. I know it isn't the carbs because this is the second rack that has been on this bike (first set was actually off of a KZ650!) and I did an amazingly thorough rebuild on the current set. I noticed no change in throttle heaviness between the 2 sets of carbs.