Jetting for a 2003 mercury 200Hp

badbass

Seaman Apprentice
Joined
Dec 6, 2004
Messages
43
Hi,

We were servicing my friends 2003 model Mercury 200Hp this weekend and I noticed something weird with his carb setup.

Serial No. OT921473

His main jets were all different sizes and ranged from
3X .80 Jets
2X .82
1X .84

Could someone please clear this out for me and tell me why you should have different jet sizes for different carb's and if the Jetting is fine for altitude of a 1700m.

Thanks
Rudie
 

JUSTINTIME

Captain
Joined
Sep 2, 2006
Messages
3,284
Re: Jetting for a 2003 mercury 200Hp

i hope u remembered where the carbs went!
they were designed that way
it idles off the top 2!

I'll look up mañana
 

clanton

Rear Admiral
Joined
Jul 9, 2001
Messages
4,876
Re: Jetting for a 2003 mercury 200Hp

You should reinstall the carbs and jets, just like they came off the engine. If you mixed them an OEM manual will show you which jet goes in which carb. It came from the factory like that.
 
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