Chap, superior friend using hands (8)

I believe the answer is:

manually

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'chap superior friend using hands' is the definition.
I can't judge whether this defines the answer.

'chap superior friend' is the wordplay.
'chap' becomes 'Man' (chap can mean a man).
'superior' becomes 'u' (I've seen this in other clues).
'friend' becomes 'ally' (an ally is a friend or supporter).
'man'+'u'+'ally'='MANUALLY'

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(Another definition for manually that I've seen is " By hand".)

I've seen this clue in The Guardian.

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