Lol....
There is no 'Maximum', but asking loads and loads of time only makes you seem like a leach just relying solely on free handouts... Requesting a mod over and over is frowned upon on Bully-Board.
And yes, if your posts consist of just requests, then you will look like a leach... Sorry if this seems mean, but there have been multiple problems caused by leeching and leechers.
Point is, HGHGHGHGHGHGHGHGHGHG, you will need to learn these things by yourself, asking for help is fine, asking for a load of mods so you don't have to do zip is another... You have to be willing to mod, if you're willing and ready to learn, then you won't be looked at as a 'Leecher'