Polaris 280 Hose keeps coming off

[unmanifest]

Not sure it's a great idea to resurrect old threads. But thought it's better than starting a similar duplicate.

Nabin - how did you finally resolve this?

I recently rebuilt my Polaris 380 and it was working fine for a couple of weeks and suddenly now the wall disconnect keeps popping off (from the wall).

TFP Experts - what might have changed suddenly?

I don't seem to have a red or blue restrictor and I haven't checked the 380's RPM after the rebuild. What could have caused it to fail suddenly?

 

[Mayorb]

Generally the blue restrictor does the job if there is too much pressure.
You are looking for about 30 RPMs on the Polaris wheels while holding it under water.