i need help with scooter engine

[acid21]

i have recently added a new silencer exhurst to my speedfight and it started playing up it loses power up hilles and just has really bad pull of speed (i have to run with it for about 100 meters before it starts to go ) and i got some new rollers but i dunno how to fit them mine is a water cooled engine if any of you can help i really need it

thank you

[binge]

Right, Is it a speedfight 50 or 100cc?


As for the bad pull away, Its a number of things. A Make/modle of exhaust would help us diagnose the problem.


The Most common thing with aftermarket pipes is that they dont work without changing the rollers. 2 strokes rely on a good exhaust to run well...

if you dont know how to change the rollers, then I would get someone who does to help you for the first time. but its a case of removing the transmition case (The big thing on the side where the kickstart is). and then locate the "Variator". Its the Hub at the front. (Front pully).

You need to hold it still while you undo the central Nut. I use a chain wrench for this. But theres LOADS of ways to do it, you just have to use your imagination because the correct tool costs Money!


Take the variator apart, and take all the rollers out, clean it all up. and replace the New Rollers.

Put it back together, and your sorted.


It also could be a case of the clutch springs. My speedfight 70 was tuned for fast pull away, So it had really tight clutch springs meaning the revs had to be really high before the clutch engaged.

<|Ben|>

[acid21]

ok ty for your help i tryed to do that but the nuts are stuck on the big gray thing with the kick start on it i have a tecnigas silencer and i have recently had a engine rebuild but it worked fine up till i put the exhurst on

[Biker-Kev]

Would you not have to also re-jet for a new silencer or is thid just for a full system?
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