Can you quote the procedure for leaning from the flight manual?
I suppose you are referring to the bit in the After Start section that says
NOTE: (Helicopters with fuel injected engine-HIO-360-G1A)Leaning is not permitted
or the bit in the Cruise section that says
CAUTION....(HELICOPTERS WITH FUEL INJECTED ENGINE -HIO-360-G1A.) DO NOT LEAN.