Re: 1981 Chrysler 55 HP
Yes you need to replace the impeller in the waterpump. The waterpump is located in the lower leg of the motor. You first need to remove the lower unit, then you will find the waterpump housing sitting atop, it is usually black and the driveshaft runs through it. In the top of this forum you will find a FAQ, click on this as there should be a step by step explanation thread in it. Removing the lower on your particular motor can be a pain due to the shift linkage. There are two ways you can disconnect this, but on my 55 I like to unbolt the lower almost completely, seperate it just enough from the main leg to gain access to the shiftrod coupler. From here you will remove the cotter pin that holds the rod in place with needlenose pliers, and then you can slide the lower unit the rest of the way off.