I have a basic theory question of why my 175 Sport Jet (or most outboards for that matter) need a primer bulb. My previous boat (merc 140 i/o) didn't have one, but seems like all outboards do.<br /><br />Why can't they just get rid of it, since it seems like a source of a lot of problems?<br /><br />Don't the floats in the carb hold enough fuel to get the engine running, if it's been sitting for a while? <br /><br />Thanks,<br />Tom