Problem clutch

[adumas]

Hi... I'm new to the forum and hope someone can help.

I have a 2 month old 50cc dax motor - it had been running great until a couple of days ago. We noticed that from a cold start, we had to pedal about 30 yards to finally turn over the motor. A couple of days ago, a new problem arose - we pedaled and the motor didn't turn over at all. There was almost almost equal resistance with or without the clutch engaged.

I opened the clutch cover (see attached pic) and watched as I pedaled. The inner part of the large gear moves freely forward and back. The little gear occasionally engaged with the outer gear - but not much. If I disengage the clutch and move the bike back and forth by hand, I eventually get resistance - almost to the point of where the motor tries to turn over. Each time I disengage / engage the clutch, the same thing happens - no resistance and then resistance.

The resistance is still not enough to turn over the motor. I can pedal for 30 yards and it doesn't turn over.

It seems like it is something is slipping...

Any help? things for me to test?

[Bikeguy Joe]

Try this- First, spray some brake cleaner in the clutch assembly with the lever locked in.
If that doesn't do it, take off the plate (count the turns of the "flower" or "star nut" when you remove it) and scuff up the clutch pucks with some 60 grit paper.

Once back together, turn the flower IN a half turn extra, it will give a bit more pressure on the plate.

[adumas]

Thanks for answering...

How do I take off the plate? Do I need a special tool? What is it called? Is it something I can pick up at the hardware store?

I'm not sure what the clutch pucks are.

Sorry, but I'm new at this - love to learn though..

[Bikeguy Joe]

Take off the little phillips head screw and then unscrew the "star" nut. the rest will come off and you'll see what I'm talking about.

[Bikeguy Joe]

It looks like your star nut is almost unscrewed in the photo, maybe you will want to take out the phillips and turn the star in a few turns then replace the screw first.

[Bikeguy Joe]

No special tools required. Pull the clutch in and lock it first.

[wjose]

HELLO,

I Briefly got my new bike to run and noticed the clutch slipping going up a small hill, my kit is also a 50CC Kit. I'm baffled the other day it actually fired up and ran and today no go there is no spark, anybody has an idea on what ohm check to use on the magneto and coil, does the coil have to make contact with the frame.
Will

[Bikeguy Joe]

Check the connections on the plug wire, sometimes the cap will fall apart internally, or the wire is not screwed into the CDI all the way.

[adumas]

Hi... I got the star nut to turn with some pliers - it was pretty tough to turn - the pliers kept slipping. Is there a tool I can get to do this? I have 4 HT motors and want to service all of them - and I don't want to damage the star nut...

By the way, when I removed the plate, I noticed that all of the pads seemed to have grease on them. Is this normal?

[Bikeguy Joe]

If you pull in the clutch and lock it, the star nut will turn easier.

No, the grease it the reason it's slipping. Clean it with brake cleaner, then re-assemble.