Response to Hi there, The motors can be swapped with no problem. The difference between a 48Y frame motor and 56Y is that the 48Y has a smaller barrel (i.e. is smaller in diameter). You can put the smaller 48Y frame motor on the pump base. The 48Y frame motors come with a rubber spacer to make up for the smaller circumference. If I'm not mistaken, most of the Sta-Rite pumps should be 48Y frame motors. If you have a 56Y on there, you may want to check the pump base/bracket. Sometimes when going from a 48Y to a 56Y, the base has to be cut to fit the larger motor. As for the impeller screw, the newer motors don't need it. You can simply thread on the impeller and you do not need the impeller screw. As far as I know, only the OEM branded motors would come with the opening in the shaft for the impeller screw. Here is a good article on the topic Do I Need a Impeller Screw For My Pool Pump Motor.
An image is worth 1,000 words! Add an image or two to your comment to help ensure it is understood accurately.
Yes, please email me exclusive discounts, swimming pool tips and helpful how to guides.
This comment may be posted on a public site. Do not include: HTML, references to other retailers, pricing, personal information, or any profane, inflammatory language.