Implement to push to the left (6)
I believe the answer is:
shovel
'implement' is the definition.
(shovel is a kind of implement)
'push to the left' is the wordplay.
'push' becomes 'shove' (shove is a kind of push**).
'to the left' becomes 'l' (common abbreviation).
'shove'+'l'='SHOVEL'
'to' is the link.
(Other definitions for shovel that I've seen before include "Old clerical hat" , "Scooper" , "Dig" , "Digging tool" , "Scoop for lifting and carrying" .)