BKDOSS: Re-read your SUP PRO's again!
For a manual start the fuel MAY BE put in at 22%N2 or MAX MOTORING.
ie. if it is possible to achieve a higher N2 speed on the starter then do that before the fuel is added. This may help with an engine that is prone to over temp. By the same token with an air source that is a bit weak you may not even achieve 22%N2
Do you understand now why MAN STARTs may be used?