Mini bike screeching sound

[spitviper]

My mini bike makes a loud screeching sound when I accelerate. I'm pretty sure the problem is the clutch, but it is a fairly new clutch, any body know what's happening?

 

[MDMike]

I had a simular problem on a cart I have, it was the pull start clutch.

 

[spitviper]

I had a simular problem on a cart I have, it was the pull start clutch.

How would I fix that?

 

[MDMike]

I replaced the clutch,
take the pull start shroud off, its the shaft that goes into the pull start.

 

[oscaryu1]

I had a simular problem on a cart I have, it was the pull start clutch.

That's generally on Briggs & Stratton engines. IIRC, he has a Robin engine. Probably with the newer style starter cup.

 

[spitviper]

That's generally on Briggs & Stratton engines. IIRC, he has a Robin engine. Probably with the newer style starter cup.

Yeah I have a robin engine, I'm a noob at this...

 

[MDMike]

well I guess that changes everything :-D
Thanks for clearing that up Oscaryu1

 

[oscaryu1]

No problem. At idle it runs fine. With his clutch off, it still screeches, but a bit less.

Main bearing?

 

[MDMike]

to diagnoise the sound by describing is VERY hard, it could be a bearing.....
Post a audio of it if you can might help narrow it down

 

[spitviper]

to diagnoise the sound by describing is VERY hard, it could be a bearing.....
Post a audio of it if you can might help narrow it down

That's what I tried to do, The camera doesnt pick up the noise well, but i'll post anyway, let me upload it upto photobucket

 

[spitviper]

http://s126.photobucket.com/albums/p83/spitviper/?action=view&current=IMG_0001-4.flv

 

[MDMike]

That's what I tried to do, The camera doesnt pick up the noise well, but i'll post anyway, let me upload it upto photobucket

You're right cant hear it, try taking it out of the shed first

 

[spitviper]

You're right cant hear it, try taking it out of the shed first

It's been raining for the last 3 days, still is.. or else i would have

 

[847]

def sounds like something is in the starter housing. are all the bolts on it? i'm sure they are ... i'm just throwing stuff out there.... on the vid, it sounds more like a grind than a screech tho. but you said ur cam sucks at sound ...

 

[sayre315]

on briggs engines you dont have to replace the clutch
just sand the shaft and put some light oil in there

 

[Kenny_McCormic]

If it has a starter cup setup and the clutch isnt it its probably a bearing in the motor, try to isolate it with a stethoscope. If anything its probably the PTO side crank bearing.

 

[2or3wheels]

take schroud off and take some WD and spray it inside. DONE. if it still makes noise well i dunno.

 

[spitviper]

def sounds like something is in the starter housing. are all the bolts on it? i'm sure they are ... i'm just throwing stuff out there.... on the vid, it sounds more like a grind than a screech tho. but you said ur cam sucks at sound ...

I guess you could say it's more of a grind.

 

[oscaryu1]

Pull the sidecover and take a look at the bearing.

 

[Russ2251]

High probability recoil clutch is culprit.

on briggs engines you dont have to replace the clutch
just sand the shaft and put some light oil in there

Agreed, however, 400 grit emery cloth or an abrasive stone will work better than sandpaper.