Valve clearances

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Andre01

Pack Dog
Joined
Apr 15, 2012
Messages
224
Reaction score
49
Location
Malmesbury
Bike
Honda CRF-1000L Africa Twin
My Dakar is running very smooth

No hard starting
No surging or any flat spots.

BUT... lately fuel consumption is starting to increase by 15-20%.  The air filter is clean.

I am going to replace the fuel filter/pressure regulator as the bike is currently standing on ±85 000km and it was never done before.

Now, my question.  When should I suspect valve clearances "out of spec"? What is it symptoms of bad (out of spec) valve clearances on our 650s?
 
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