Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 35Get this manual
High Altitude Jet Chart Engine Operating Elevation (Above Sea Level)
High Speed Jet Size 0.002 in sma ller (than std jet(0.05mm0.004 in smaller (than std jet) (0.10mm) 0.006 in sma ller (than std jet)
2Loosen screw (a) and pu ll th rottle wire (b) from throttle arm of ca rbu retor3Disconnect choke link rod (e) from ca rburetor
2500 ft- 5000 ft(762m1524m)
5000 It- 7500 It(1 S24m228Sm)
7500 Itand Up