Carb Spring Mod

Not sure how to do what you are talking about, but this is what I did.

I took the thumb lever out of the housing. Put it in a vise up to the notch where it starts to bend. I then took a Map Gas torch and heated it up a little bit and gave a few small hits with a hammer. Installed, removed and did it over a couple times, until I found a much better leverage position. I have smaller hands and this greatly reduced the effort required to reach/ push the throttle. I also removed the spring from the housing. I have the ebay carb spring in another carb, just have to swap it over, but I can tell a huge difference, stock position with ebay spring, vs. bent lever and no ebay spring. Once I install the spring i should have no issues at all.

Just a idea.

i think this is it sorry if im wrong..

http://yfz450.theatvchannel.com/invision/i...=42612&st=0

i would do what you said mudd, but i like TORS and still have it.

QUOTE (Joester @ Mar 17 2009, 09:12 PM) index.php?act=findpost&pid=758905

i would do what you said mudd, but i like TORS and still have it.[/b]

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Maybe I am not understanding or something. What I did has no effect on anything, just changing the leverage ratio of the thumb throttle lever. Makes so I don't have to reach as far, moves it closer to the bar is it, which in turn makes it easier to push. The movement goes a little further forward now, but the amount of travel is still the same.

removing the spring from the housing makes the little gold thing not press the TORS limit switch and shuts down the quad. at least im pretty sure thats what is is.

QUOTE (Joester @ Mar 17 2009, 09:47 PM) index.php?act=findpost&pid=758942

removing the spring from the housing makes the little gold thing not press the TORS limit switch and shuts down the quad. at least im pretty sure thats what is is.[/b]

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Oh ok. Well I could put it back in and I don't think it would make much of a difference. Like I say it is just a more comfortable leverage position for my smaller hands.

is your TORS removed?

just buy the spring off ebay. did wonders for me, my thumb doesnt give out nearly as quick while on the track.

if you feel like you need better ergonomics then switch to a honda thumb throttle, they are supposedly much easier on your hand. I dont recommend bending yours lol, but hey if it works more power to you

i have -$45 due to a severely bent tie rod yesterday. its on the wall of shame now. i would like something free until i get a summer job (im 17) and just bought my YFZ which obviously put a dent in my "pocketbook" aka box in my room. lol

QUOTE (Stix1107 @ Mar 17 2009, 10:19 PM) index.php?act=findpost&pid=758967

just buy the spring off ebay. did wonders for me, my thumb doesnt give out nearly as quick while on the track.

if you feel like you need better ergonomics then switch to a honda thumb throttle, they are supposedly much easier on your hand. I dont recommend bending yours lol, but hey if it works more power to you[/b]

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The spring on ebay is about $25 shipped.

I have a Honda throttle, and it didn't really seem like it did anything. I have a 04. My cousin has a 06 and his stock throttle was still softer than my Honda throttle, with the ebay spring, I don't know why, but it is.

Also since I have a Honda throttle, yes the TORS is disconnected.

i bought the spring off ebay as well, just installed it, and it made it about half as heavy to push. didn't change the location of it at all.

Hey, shouldn't you have lots of money. After all, you ARE a college teacher at the worlds most reputable english schools ever, right ? : )

teaching doesnt pay well, plus no one likes english.

http://www.yfztech.com/forum/index.php?showtopic=18888

this how i did mine all u need is a dremel and about 20 min LOL!!