1971 Evinrude Fisherman 6HP outboards Service Manual, Page 18Get this manual
F OAT VA VE SSEMBLY
CARB RETOR
cCheck the needle valve seat with magnifying glassif the seat is nicked, scratched, or worn outof-round, it will not give satisfactory service See Figure 3-11 The valve seat and needle are matched set; if either is worn, both parts must be replaced Use new sealing washer when reinstalling the needle seat
HI NGE WOR IN "" ;:::',al_F LOA ARM UT
O IFICE PLUG
Figure 3-10 Inlet Needle Valve Wear
-SCREW PLUG