Spring weight stamped as 4Y

Question

I believe that I will need the tandem set up using 15-087 and 15-086. The spring has a stamp of 4Y, is this a 4 lb spring?
When I install the the two coil housing, I assume that I hook them together and then pull the spring out and run one on top of the other up to the clip.
Thanks you.

Paul · Accepted Answer

You are correct in choosing the 15-086 coil housing and 15-087 coil housing pivot. You are also correct in needing a 4 lb. sash for your coil spring. For that, see our S180-4. You will run one spring over the other and hook both of them to the 16-024 clip. Review all the parts and let us know if you have any further questions.