FZS600 valve train noise/camchain

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Hi,


[size=1em]"[/size]reset it by putting the bike in gear and turning the rear wheel backwards half a turn, this turn the engine backwards and [size=1em]creates enough slack in the chain to allow the tensioner to move to the next tooth"[/size]
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[size=1em]I put the bike in 1st gear and tried to push the bike backwards it just stopped and no amount of pulling on bars would turn the engine backwards...[/size]
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My Fazer has just clocked over 50k miles and has a rattle which i expect it's cam chain. I am not worried just thought this simple reset of the adjuster would be easy but far from it.
Am I missing anything...