Xt660r

[Billy Bunter]

Hi guys and girls,
i am in Quagadougou in Burkina Faso and a really nice local guy has seen my working on my bike, 800GS (soorry!) and thinks i know all about bikes, hhis english is very limited.

Can anyone help with this, he cant get the front sprocket off which needs changing... any hints please would be appreciated as soon as cos i leave here tomorrow. Does it undo counter clockwise?

Many thanks for any assistance.

[edteamslr]

I have not taken the front sprocket off my XT660R but the microfiche doesn't indicate that the nut is unusual in any way (it's breakerbar-time: clockwise 120Nm to tighten; or 85ftlb).

I take it you have spotted the lock-washer? Hard to miss but you never know....

[edteamslr]

by the way - there's a bike 'shop' in Ouaga that can help...

I think I included the GPS coordinates of the place on the Brighton2Capetown website...follow my signature and it should be there somewhere.

[BlackDogZulu]

The sprocket comes off in the normal way. As edteamslr points out, it is held in place by a lock washer. Once the lock washer is off, the nut unscrews anticlockwise. Put the bike in gear and hold the rear brake on (or jam the rear wheel spokes with a broom handle or something) before you start. It is VERY tight (and needs to be). If there is a problem with working the sprocket off with the chain wrapped round it, loosen the rear axle and move the rear wheel forward as far as it will go. This will give you some slack to work with.

[BlackDogZulu]

I replied thinking, from the thread title, that this was a query about an XT660R. If the bike is a BMW, my comments are invalid, sorry.

[Billy Bunter]

for the straight forward answers, will 'chat' to him tomorrow in the morning before i go... if he still looks lost, will point him in the direction of the bike shop mentioned. Sorry for any confusion, it is an XT660R that needs the sprocket changing, just mentioned in my original question that i was working on my bike, 800GS, when he approached me. Anyway, many thanks guys it is appreciated.