If you can loosen the coupler on the switch, perhaps the pot shaft can rotate? That might narrow it down.
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On 7/31/2020 6:04 PM, Richard P via groups.io wrote:
Thanks, all. I really don’t know if it’s the pot, or the combined switch, that is frozen. One or the other. I can get spray into the pot, but it still won’t move. The rotary switch on the back, however, is sealed tightly. I will continue to attempt to get spray into the fool switches. There are two of these combined pot/switches in the 453. Stay tuned.