Help.....picked up a cheap 93 sea doo "sp" i think....not sure what it is......has a long single seat...580 engine......wasn't working.....gas lines bad.....cleaned carb....filters...and fires up......and runs great.....but only if i hold the button with the lightning bolt under it.....start button is fine.....revs very nice.....low hrs......but what the heck is the button with the bolt for.....ordered a manual.....but in the mean time would love to get it running......my 97 gti doesn't have one.....it's left of the starter button