Front sprocket tab washer - what's the secret for removal?

[pete376403]

The hook and cutaway look like spring preload adjuster C spanner.
I found one of those spanners up in Karipoti ages ago, doesn't fit the axle nuts on the KLR so its in the box of not-quite-useless-bits. Maybe time to dig it out and see if it fits the sprocket nut

[dmoo1790]

The hook and cutaway look like spring preload adjuster C spanner.

You could be right although I don't believe it's possible to get at the shock on the 690 with a tool that chunky without removing it.

I found one of those spanners up in Karipoti ages ago, doesn't fit the axle nuts on the KLR so its in the box of not-quite-useless-bits. Maybe time to dig it out and see if it fits the sprocket nut

The spanner sizes are 27 and 32 mm on my tool.

[Crisis management]

Unless KTM have upped the tool material spec from mild steel I don't fancy your chances undoing the sprocket, that's a huge force to apply with such a short moment arm, good to know if it's your last resort but not something I would undertake regularly.
Video is clearly required, we will critique your methodology with absolutely no bias...... lots of laughter, but no bias!

[clint640]

On the 640 I have easily removed a properly torqued front sprocket nut with a 27mm ring ended tyre lever, a stylish yoga pose & a well placed boot.

I re use the nut & washer 2 or 3 times then replace. Same with rear axle nut. Torque wrench essential.

If the 690 clutch is anything like the 640, treat it like your liver: it is evil & must be punished I've been abusing the my clutch for 120 000 km & it's still mint, measured up the plates at new spec at 95K km. Someone at KTM should be shot for making the 690 6 speed a narrower range than the 640 5 speed though.

Cheers
Clint