I have Yamaha Jog RR 2004 (Liquid Cooled) and past month i have buyed Leovince Sprinter... Scooter have good acceleration to about 40km/h then there is "hole" in it and after 55km/h he accelerates slightly better... top speed is 65km/h sometimes 70 LOL when i drive 60km/h and i brake to 20-30 scooter wont accelerate even on full throttle Now i have 5,6gram rollers and serial belt with 16000km lol and serial central spring... i tryed with blue malossi central spring but then is even worst, i tryed with 6,5 gram rollers and 5,2 but still nothing... can please someone help me... i can't do 100m wheelie anymore What should i do? Should i change small springs in clutch? HEEEELP ME PLEEEEAAASEEE!

you HAVE TO change a belt immediately
serial belt holds about 7-8 kkm and then becomes to expand
and in your case it could burst and damage your crankshaft
and i think that you have to put lighter rollers
what weight of rollers did you get with sprinter?

bad_dac wrote (View Post): › you HAVE TO change a belt immediately serial belt holds about 7-8 kkm and then becomes to expand and in your case it could burst and damage your crankshaft and i think that you have to put lighter rollers what weight of rollers did you get with sprinter?

I didn't get any rollers because sprinter is not new, it is used

Neno wrote (View Post): › bad_dac wrote (View Post): › you HAVE TO change a belt immediately serial belt holds about 7-8 kkm and then becomes to expand and in your case it could burst and damage your crankshaft and i think that you have to put lighter rollers what weight of rollers did you get with sprinter? I didn't get any rollers because sprinter is not new, it is used

go to (or call) ing kart, bencony or any other scooter shop with leo vince exhausts and ask wich rollers and springs come with sprinter for minarelli lc
and then buy them, and belt
and your scooter will go just like new (80+ on scooter celler)

i suppose that you need about 4-4.5gr rollers

Change the belt! It's too many kilometers for belt!

bad_dac wrote (View Post): › you HAVE TO change a belt immediately serial belt holds about 7-8 kkm and then becomes to expand and in your case it could burst and damage your crankshaft and i think that you have to put lighter rollers what weight of rollers did you get with sprinter?

definitly you have to change belt, I could you explain this problem much better but only in croatian

Question: when you open throttle are there any squeaking noises? I think that the belt is to blame. Same happened to my friend, only he had the cpi hussar...

Change first the belt, and put new central spring
malossi white or yellow.

And a bit lighter rolls

Leo sprinter comes with 3.5 gr rollers