Engine help

[markb]

Bought a cheap stock blaster last week Had seen on a couple of threads on here before i bought it there quite noisey engines,so i went and seen it had a drive on it etc...
The problem is it makes a knocking noise when its idleing,the noise go's as soon as you give it a rev it has loads of power compresion etc
Another thing i took the oil cap off and i can move the flywheel side to side Think its time for a rebuild?

 

[brandoz28]

yes, the crank bearings are shot, time to split the cases and go through the thing. new bearings/seals throughout

 

[markb]

Thanks,
Wheres the best place to get new crank bearings etc because blasters are alot rarer over here than over in your neck of the woods,plus parts are much cheaper

 

[jrn2786]

Ebay check this out
Wiseco Crankshaft Crank Kit Yamaha YFS200 Blaster 87-06: eBay Motors (item 320543184212 end time Oct-31-10 14:02:26 PDT)

 

[fsuroxu]

I want to know how you could move the flywheel through the hole where you put oil!

 

[Blaner]

haha must have really thin fingers

 

[brandoz28]

holy crap i need to read closer lol


you were probably moving the clutch basket, that's not good either....



time to tear her down and check it out

 

[royalt67]

Moving clutch basket? Eeek. Immediate inspection required.

As for the knocking sound...is it a knocking or a ticking?

 

[markb]

Sorry i just thought it was the flywheel it has the ring gear on it for the kickstart,i can turn it ever so slightly with me finger

 

[markb]

Infact it just sounds like every other blaster video online

 

[fsuroxu]

ok. Now I understand. Your either missing a spacer or washer on the clutch side or it is not torqued down and the nut is coming off. Your weird sound might be that clutch assembly moving while you are riding.

 

[Yamahafan88]

Someone else already posted asking about the knocking sounds. My guess is your just not used to the sound of these 2 strokes. Take a look at this video and let us know if yours sounds the alike.

 

[royalt67]

Infact it just sounds like every other blaster video online

Ah, kinda my point. These things click and tick and whirr and ....

 

[markb]

Yes guys its slightly noiser but not much cheers again to every one thats helped me!