Hi, it's Allie from Crucial Vacuum!
Replacing your Shark Floor Nozzle Hose is very easy. Start by unplugging your unit to avoid any safety hazards. The floor nozzle hose's side that attached to the floor base of your Navigator can easily be pulled away. The other side of the floor nozzle hose has two tabs that can be pushed in while pulling it away from the base.
When installing, connect the floor nozzle hose to the canister first by pressing both side tabs while placing it until it click in its place. Then connect the hose to the floor base.
You can purchase direct your replacement hose and filters from Crucial Vacuum with free shipping and an exclusive 10% coupon for Fixya.com readers, use code: FIXYA10
http://www.crucialvacuum.com/catalogsearch/result/?q=NV352
I hope this was helpful. If you would like further assistance, please feel free to give us a call at 877.750.9239. We have helpful and friendly customer care representatives on the line ready to assist you.
Alejandra (Allie) Sepulveda-Rivera
Crucial Vacuum Customer Care
http://www.crucialvacuum.com
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