thunderbolt 500 Stalls

en2nash

Cadet
Joined
Jun 30, 2004
Messages
10
I have a thunderbolt 500, don't really know the year. Serial # 3482148. The problem doesn't happen alot, just everynow and then. When I start up in the water, after running for a while,I'll put into gear to take off, and it will die. It will do this about 3 to 4 times before actually getting up and going. I just got the boat recently. It was a hand me down from my father. He just had carb. work done. Like i said before, it doesn't happen alot, and when it gets up and goes, you could never tell anything was wrong. <br /><br /><br /> Thanks Jeremy
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: thunderbolt 500 Stalls

Jeremy,<br /><br />Sounds like the idle mixtures are set just a tad too lean. The year of the motor is 1973.<br /><br />Chris..............
 

en2nash

Cadet
Joined
Jun 30, 2004
Messages
10
Re: thunderbolt 500 Stalls

I'm guessing the adjustments are on the carbs. Do I adjust the top screw or both(bottom and top). Thanks for the Info. Jeremy
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: thunderbolt 500 Stalls

2 carbs, one mixture screw on each.
 

en2nash

Cadet
Joined
Jun 30, 2004
Messages
10
Re: thunderbolt 500 Stalls

Thanks, I'll give it a try<br /><br /><br />Jeremy
 

luv fishing

Cadet
Joined
Jul 3, 2004
Messages
9
Re: thunderbolt 500 Stalls

helow mine has done that every now and then. seems like i had to reprime bulb or keep trying to start 2 or 3 times. if all elese failes next time see if bulb needs reprimed.
 

bucksaw

Seaman Apprentice
Joined
Aug 28, 2002
Messages
43
Re: thunderbolt 500 Stalls

My Thunderbolt was doing the same thing, just had to turn the Idle up a little. Worked fine since. :p
 
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