'06 YBR 125 front sprocket/chain buggered

[Tierbirdy]

So, because Im a wanker Ive cocked everything up.

I noticed the chain is skipping a little. Give it a poke and its VERY loose. Its pissing down with rain, just got off a 14 hour shift and I CBA to do anything about it, will do it after work the next day because the forecast is a bit nicer! I limp it to the work, just about making it there. Park it up and think I'll sort it later, its a 2 minute job and Ill borrow the spanners from the workshop guys when my shift is over.

My shift finishes at 6pm, the workshop guys go home at 5pm. Cock. Typically nobody on the station has even a basic toolkit. With no other option I try and limp it home. Get about half a mile down the road and the chain ties itself in a knot around the rear sprocket.

Removing the sprocket cover reveals this... something seems to be missing. Chiefly the front sprocket! Fucked if I know where its gone!

https://i57.tinypic.com/30xiphl.jpg

So Ive ordered a chain & sprocket kit, but then realised it didnt say wether it included fittings or not...

The only bit left behind was this

https://i59.tinypic.com/2gvlwd5.png

Dunno what its called, but from what I gather its the bit that holds the sprocket onto the shaft, and it needs 2 bolts to join to the sprocket which I dont have and dont know if the kit will come with.

So question for those out there wiser than me, whats the chances of the kit coming with bolts? If not any idea what size bolts I need? Can I bodge it with any bolt that fits the hole and holds it in place? Finally and most importantly, does anything in those pics look fucked? I dont know what it looked like before hand so dont know if Im missing anything thats supposed to be there (other than the sprocket!) or if theres anything else broken?

Lesson learnt here: Do your weekly checks and tighten the damn chain! If I hadnt been such a lazy wanker this probably wouldnt have happened!

[monkeybiker]

When you do fit a new one use thread lock. Quite possible the bolts have wobbled out.

[Pigeon]

Looks like your just missing the two bolts

https://i1329.photobucket.com/albums/w559/pigeon35/Random/20130621_214040resized_zpseb6c6cd3.jpg


Search for parts:
https://parts.yamaha-motor.co.uk/ypec_b2c/

Looks like:
BOLT FLANGE - 9502N-06010

[Tierbirdy]

[Pigeon]

Sorry fella,

Click this, then click the button 2/3 the way down marked "Yamaha Parts Catalogue"
https://www.yamaha-motor.eu/uk/services/online-parts-catalogue/index.aspx

[alt tab]

Weld it

[Tierbirdy]

[Pigeon]

You should try and get the bolts separately. Very unlikely to come with the sprocket.

[Tierbirdy]

Kit turned up today, bloody fast that was!

Bolts didnt come with it, nor a new sprocket retainer (not that I needed one thankfully) but its pretty annoying, when something is listed as "full sprocket kit!" Id expect it to have everything you need, oh well.

Looks like a fairly easy job to do, now just need the bolts and a few hours of it not raining! God I miss having a garage!

[Commuter_Tim]

[serlant]

As said, the retaining plate and bolts are not servicable items and aren't expected to be replaced when the chain and sprocket are replaced or if say, someone is unable to maintain they're vehicle and so bits start fucking off, i'm surprised that you managed to find the retainer. just put 2 cap head bolts and some red loctite on it?
____________________
04 CBR1000RR, 1995 Husqvarna TE410, 1998 VTR1000(Sold), 1990 XJ600(sold), 1996 KH125(dead and sold)

[Tierbirdy]