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Post by afficial247 on Jul 20, 2015 19:42:38 GMT -5
Well, to start I'm Alex in SC. I bought a 2010 Taotao 49cc about 2 weeks ago, sadly it's been down for the last week. It used to go about 45 on a flat but since been put up it only does 30 on a flat. I couldn't get the throttle to respond on the last 1/4. The carburetor has a 72 main jet with an accelerator pump, I took the carburetor apart 3 times before I figured out that there was a diaphragm underneath the throttle cable bracket. I pulled it out and seen it was torn. I sealed it with copper rtv and put it back together and tried to turn it over it wouldn't run but gas was leaking out the accelerator pump so I created a gasket. I figure it had so much pressure after being sealed it burst out somewhere. I bought a new belt today and it's so good it can't just slip on, lol "till tomorrow". It hit about 110 in SC today. I tried taking off the pulley I had to c-clamp it then apply resistance with my tire iron I was using a 12 point 17mm and almost stripped it, I'm gonna try to use a 6 point tomorrow. I just want to know am I on the right track?
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I NEED HELP!
by: geh3333 - Jul 20, 2015 19:46:29 GMT -5
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Post by geh3333 on Jul 20, 2015 19:46:29 GMT -5
You need to buy a new diaphragm . to remove the variator , its best to use an impact. This is how most of us get it off. After you install a new diaphragm you will need to do a good carb tuning.
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Post by afficial247 on Jul 20, 2015 20:44:10 GMT -5
I ordered on today, I'm just hoping the belt is the problem.
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Post by afficial247 on Jul 20, 2015 20:45:36 GMT -5
If I get an impact do I still need to clamp the pulley?
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I NEED HELP!
by: murkyapricot - Jul 20, 2015 21:08:50 GMT -5
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Post by murkyapricot on Jul 20, 2015 21:08:50 GMT -5
I just invested in an impact wrench and it was def worth it, it was only like 50 or 60.from harbor freight and they always have coupons
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I NEED HELP!
by: geh3333 - Jul 20, 2015 21:19:53 GMT -5
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Post by geh3333 on Jul 20, 2015 21:19:53 GMT -5
If I get an impact do I still need to clamp the pulley? Nope, just the impact. Make sure you don't buy a 1/4 inch impact. I bought an electric 8amp 1\2 inch craftsman impact. Most 1/2 inch battery powered ones work good. You just hold the drive face with you hand and use the impact. |
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Post by lain on Jul 21, 2015 0:33:02 GMT -5
You put copper rtv on a diaphram in your carb!? You shouldn't use any kind of gasket maker or anything like that on the carb, take the carb out and clean it out fully before you install the new diaphragm. Belts do not make you suddenly lose 15mph, especially when the scooter is still new. Try cleaning out the carb and then tune the a/f mix screw. I tuned my carb first in 50 degree weather, and had the same issue the past few days where it has been  +, I tuned my carb now I'm back to speeding around, not guaranteed to be the solution but it sounds like the problem may be related to your carb. Hot weather can be a cause for issues if not tuned for it. The accelerator pump only effects the scooter when you add throttle or take throttle, and only for a very brief moment like not even a second so I would not expect it to take your topend down it has no effect on it really, you can move that metal bar above the butterfly on the carb to adjust when and how much the accelerator pump pumps, you can even move it so it doesn't touch at all taking it out of the equation. |
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I NEED HELP!
by: geh3333 - Jul 21, 2015 4:00:15 GMT -5
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Post by geh3333 on Jul 21, 2015 4:00:15 GMT -5
The only way a new belt may make you loose mph, is if your old belt was glazed causing the need to up the roller weights so your rpms don't sky rocket. Then when adding the new belt , the weights will now be too heavy causing too low of rpms and a loss of mph.
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Post by tvnacman on Jul 21, 2015 4:57:18 GMT -5
you don't get a stable carb adjustment with misadjusted valves. Riding in high heat would be the time for valve lash to go off, if you under 2000 miles on the engine. If you have not ever checked valve lash now is the time.
John
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I NEED HELP!
by: cyborg - Jul 21, 2015 14:57:06 GMT -5
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Post by cyborg on Jul 21, 2015 14:57:06 GMT -5
Agree with tvnac
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Post by afficial247 on Jul 21, 2015 18:45:21 GMT -5
Well, today I tried again with the belt, then called east coast scooters and asked them if they were sure my 669 18.1 was the right belt and they told me what I thought was right I needed a 729 17.7. I went and exchanged it for the right one, came home and put it on with no problems. I have no loss of power anymore and for all of you wondering about the rtv. The gasoline sets on the opposite side of the diaphragm, no problem there! I don't even know how, the person I bought the moped from, put the wrong belt on. With the 12in. rim comes the 729! What I'm wondering is(I work on automobiles for a living) when I set my rocker arms on a motor there always tight, but everyone says to have a gap on a motorcycle's rocker arms, I don't like that tapping just sounds like it's weakening my rocker arms! So, I set them where they wiggle but don't tap, BEAUTIFUL!
THNX,
Alex
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Post by afficial247 on Jul 21, 2015 18:48:04 GMT -5
THNX geh for the future reference if I need to pull the crank!
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I NEED HELP!
by: JoeyBee - Jul 21, 2015 19:32:51 GMT -5
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Post by JoeyBee on Jul 21, 2015 19:32:51 GMT -5
What I'm wondering is(I work on automobiles for a living) when I set my rocker arms on a motor there always tight, but everyone says to have a gap on a motorcycle's rocker arms, I don't like that tapping just sounds like it's weakening my rocker arms! So, I set them where they wiggle but don't tap, BEAUTIFUL! THNX, Alex What did you set the lash at? |
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Post by afficial247 on Jul 21, 2015 19:36:47 GMT -5
IDK probably .007...lol!
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Post by afficial247 on Jul 21, 2015 19:45:43 GMT -5
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+, I tuned my carb now I'm back to speeding around, not guaranteed to be the solution but it sounds like the problem may be related to your carb. Hot weather can be a cause for issues if not tuned for it. 
