Is there any inexpensive ways to tweak the 6hp Mariner to safely achieve higher RPMs/hp. I'm interested in hearing any ideas. Thanks to all in advance.<br /><br />Chuck
well one thing to do is get a carb off an 8or a 9.9.the 6,8,9.9. all are the same block only the 15 was different.1999 the 9.9 was the start of the 9.9 using the 15 block
