Mercury 20hp-25hp


Old 01-25-10, 05:37 PM
Thread Starter
Join Date: Sep 2004
Location: Saskatchewan
Posts: 175
Mercury 20hp-25hp

I have been told the only difference in a merc 20 horse and a 25 horse is the jetting in the carbs.Is this true?
Sponsored Links
Old 01-25-10, 06:20 PM
Join Date: Mar 2005
Location: USA
Posts: 6,126
Some motors are just de-rated to allow use in waters with a hp limit. Even a 1990 my Merc was available in an 18 hp version to comply with the less than 20 hp limit. There may have been a very minor difference. Some people just bought different decals. That sort of explains the old Johnson and Evinrude motors that were 9.9 hp when they could have been sold as 10 hp models, but the "less than 10 hp" was common on smaller lakes and in remote, protected lakes.


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes