Hi mark ,
I remove the pulley and clutch part.There is a cylindric rubber.Is it these part i must remove ??
can you say me which vario rollers you have ?

 

the clutch and pulley has to come apart. there is a large nut on the pulley. put that nut in a vise and turn the pullet counter clockwise with a large pipe wrench or large set of channel lock pliers and they will screw apart. be careful as when thay come apart they will spring apart as the large torque spring is between them. when you get them apart you will see the 3 clutch shoe springs, take them off and swing the shoes out as thay are attached on one end, under each clutch shoe is a small rubber donut that youi remove.

Mark

 

Sorry but I find it intreging that a french women is on here looking for advice on clutch work for her son/daughters predator 90 that she's doing herself. That's awesome!!
I'll keep it clean, this is a kids atv discussion after all. But I feel funny.

Anyway, 5.5 gram molossi rollers are what most people use. and yes that rubber cylindric thingy is what you remove. Good luck

 

don't forget about drilling the clutch for more stall speed and putting in red shoe springs, I have a method to getting them on because it is not easy. There is a lot to this, are you sure you don't want to call Hetrick racing for a clutch kit? They will know everything you need.

 

i use a scratch awl to remove and put on the clutch springs. it works great and i can change springs in just a couple of minutes. the 5.5 rollers are the most common used but the rollers are all according to rider weight. we use a lot heavier rollers in our stroker motors. rich hetrick is a knowledgable guy but shes not getting too shabby of advice from me since i turn wrenches on mini motors every day for WRH racing.

Mark

 

Mark,
Does WRH have a single throttle cable for a stock carb for a pred 90. If so, do you like them or are they heavier than the stock cable?
thanks
hunt

 

yes we have the single cable for the stock carb, it makes the thumb throttle much easier to push so the kids thumbs dont get tired so easy.

Mark

 

The WRH throttle cable is great!!! Alot easier on the thumb and it is far better than the stock junk that is on there now. Call WRHRACING for all your racing needs.

j'smom

 

I hear Justin'smom has a Hot Seat too!

 

Thank you every body ,
For Biscuit , I m not French woman , I m a man but my wife has the same hair and I find this funny.I 'm the mechanic boyand it is my son who race. He is 10 and it is his first year.
1 _ What would you say by "drilling the clutch "??
For the weight rollers , there is a lot of choice in Malossi parts for scooter in France ;I 'll find after this rollers .
2 _ For the springs , I have the stock one .Can you say me the "hard" of red one for trying to find the same in France ?