Mercury 40 Service Manual page 181

CARBURETOR
NOTE: Measure float height with carb. scale, replace float if height is not within specification
[0.39 " 0.02 in. (10.0 " 0.5mm )] . Take measurements at the mid-line of the float opposite its
pivot side. After installing, check for smooth movement of the float.
4. Install cover and seal.
a -
b -
c -
5. Install float bowl.
a -
b -
Page 3B-30
b
c
Screws (2)
Cover
Seal
a
Screw (4)
Float Bowl
28380
a
b
53674
90-828631R3 MARCH 1999