Serviced my Ten this morning and whilst changing the oil etc thought I would check the valve clearances.

Inlet ones were not too bad to get to and check.

The exhaust ones were an nightmare, got 3 of the cover bolts out but the upper one on the inside i could not get out. Struggled for an hour with various Allen keys and just could not get it to move or even get enough access.

I only way to get in other than the way i tried (from the side after removing the plastic bits) was to remove the rad, but the bolt also seemed up against a frame tube.

Am I missing something - the rest of the service went well following the forum instructions.

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XT660z NO MORE.