John McFarlane
Petty Officer 2nd Class
- Joined
- Jan 14, 2005
- Messages
- 116
Hi all. How critical to engine power and lubrication is engine jetting please. I operate a 4.3m runabout powered by an 78 Evinrude 70hp 2 stroke at both sea level one week then at 4000 feet the next, and am mildly concerned/curious.