1988-1995 Mercury Force 5HP Outboards Service Manual, 90-823263 793, Page 25Get this manual
IREPLACING PRIMER BULB 1Place the primer bulb (A) in hot water (180 to 200 degrees F) until hose (8) becomes soft and pliable2Pull hose and ferrule (C) from each end of bulb3Inspect ferrules and replace if necessary4Reheat and push hose and ferrule onto each end of primer bulb
NOTE: Make sure the primer bulb is installed with the end marked TANK oriented toward the tank5Flush hose with clean fuel before connecting it to the motor