Yes, this hole is intended to be there. There is nothing wrong with the unit. It is designed to prevent difficult push/pull and not allow debris to affect the nozzle.

The neck of the power nozzle must either be flat down (180 degree from nozzle) or at a straight angle (90 degrees) to ensure it is locked in place. Push firmly until a click is head. Attach the hose beforehand to prevent it getting squeezed on wheel

If a user needs to increase suction when using the crevice tool, simply cover one or both the holes to iincrease the suction. Always test suction level BEFORE covering the holes as it is very strong by default.

Wheels are not replaceable. The entire power nozzle will be required

That is the Brush Roll Indicator. That will glow RED when something is blocking the brush roll. Shoudl that happen, you will need to turn off the machine and check the brush roll.

Rinse filters under running tap water until the water runs clear. Squeeze filters and let air dry for 24 hours before replacing. Do not wash in dishwasher or washing machine.

These parts last the life of the product and are covered under normal use for the 5 year warranty. "Lifetime Belt" - Shark Navigator's intelligent electronic system will shut off the power nozzle motor to avoid belt wear if you block the brush roll with a large object such as a sock or carpet edge. Simply turn off the power, remove the obstruction, and then return to vacuuming, with no belt maintenance or replacement costs to worry about! "Lifetime Filters" - Shark Navigator"s filter system will last the life of your vacuum, with minimal maintenance and no replacement filter costs required. Your filters will discolor over time but will not lose their effectiveness.

The Shark Navigator Deluxe Upright is manufactured by our high-quality vacuum manufacturing partners in China.

For optimal performance, wash pre-motor foam and felt filters every month under normal use. For optimal performance, wash post-motor filter every 12 months under normal use.

Regrettably, no. At this time, the Shark Navigator Deluxe Upright is not offered with a HEPA filter. However, the combination of pre-motor and post motor filters will help protect you from allergens with only minimal maintenace.

Yes, you can order parts on the phone with us or on-line at www.sharkclean.com

A redisgned dustcup has wtice the capacity of the orignal Shark Navigator, the handle has been redesigned to improve ease of use, and the Shark Navigator Deluxe Upright has more accessories included with your purchase ( for example, the 24" crevice tool is included with all models)

2.6 dry quarts to the MAX FILL line

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