Have pocket Dirt bike

Ok have what i think is a 47cc pocket dirt bike... Have a small boy 11 weights 75 lbs "at most" he rides it in the yard or will be.. this is a used bike.. want to know what modes can be done to give it move take off in the grass.. seems to have to give it a bit of a push if he needs to go up a hill... keep in mind this in in cut grass.. looking at cluth and springs?

I know this is not a racing question but was hopeing that with the expecance here that someone would be willing to give advice to help out with some feed back on what could be done to add some low end power to the wheel. any advice would be nice... Thanks in advance.

It has the same engine as a cag. There is alot of info on these, so do not hesitate to search. This forum is huge and has alot, i mean alot of useful information.

get a bigger sprocket

There is a whole bunch of upgrades since it has the same engine as a cag all those parts can fit except for the exhaust.

...fast, simple, cheap=larger rear sprocket...