Chrysler 70, 75 and 85 HP Outboard Motors Service Manual OB 3438, Page 31Get this manual
DisassemblyTo disassemble the prime bulb proceed as follows :
1Place prime bulb in hot water (180 to 200 F) (82 to 93 C) until hose becomes soft and pliable2Pull hose and ferrule from each end of bulb3Pull check valve assembly from prime bulb 4Remove valve check ball retainer and allow ball to rolloutCleaning and InspectionInspect all parts for damage and clean in suitable solventDamage to check valve will require replacement of prime bulb assemblyReassemblyTo reassemble the prime bulb proceed as follows :
poppet contacts the bottom O-ring When couple is connected to motor or tank the poppet is pushed in separating it from the O-ring and allowing fuel to pass throughThe top O-ring serves to seal the fuel flow between the coupler and the bushing it is connected to (either on the tank or support plate of motor) Figure 3DisassemblyThe O-ring seals can be obtained as replacement parts The poppet and poppet spring can only be replaced by obtaining new coupler
To disassemble the coupler proceed as follows1Remove top O-ring seal by hooking it with suitable instrument