Installation manual

4-11
90-898305
NOTE: Before driving the check valve pin into the retainer, support the pump
housing on the opposite side, directly below the check valve retainer using a
socket or spacer. This will prevent distortion or cracking of the pump housing.
CORRECT INCORRECT
a) Check Valve Retainer
b) Check Valve
The new plastic check valve started in production at the serial numbers listed
below:
MERCURY/MARINER USA BELGIUM
200-225 HP, 3.0L Carb/EFI/OptiMax 0G925400
135-200 HP, 2.0/2.5L Carb/EFI/OptiMax 0G912213
75-125 HP, 65 Jet 0G923899 0P054758
40-60 HP 0G919929 0P054357
30-40 HP 0G919618 0P054357