Can't get blades off bolts very tight unsure which way to losen

This may seem daft but have you put the blades on correctly, they turn in opposite directions and the curved part should be pointing upwards!
Looking from above and facing towards the front the left blade turns clockwise & the right anticlockwise (the right hand one has a left hand thread holding it on, as i now realise after hacksawing it off!!)

If it runs, make sure the oil level is correct and continue to run the mower.
The blade should be a little tight, you are turning the engine.

Gary

Remove blade bolt by turning counterclockwise.

You can get the manual on the links below. page 45

http://www.husqvarna.com/ddoc/HUSO/HUSO2005_USen/HUSO2005_USen_O0503013_.pdf

http://www.husqvarna.com/us/homeowner/support/download-manuals/?query=z4822&types=O

The blade bolts have a normal right-handed thread orientation. But remember, when you are installing a blade bolt, the bolt is facing UP from the ground, not DOWN to the ground; hence the confusion.

First, you need to make sure you have the right tools for the job. You'll need a wrench, work gloves, mower blade clamp, drain pan and fresh fuel. Check your owner's manual for the correct belt to your specific lawn mower. Belts that are not specifically designed for your mower will not fit properly and may wear down prematurely. Next, remove the spark plug wire. This is a safety precaution to prevent the mower from accidentally starting.
Now you can remove the screws that secure the drive cover to the mower deck. Once you've taken off the drive cover, loosen the screw that holds the belt tension spring to the transmission. As the screw is loosened, tension on the belt is released allowing you to remove the belt off of the front transmission pulley.
At this point you'll need to turn your mower on its side to take off the mower blade. Be sure to use a work glove to protect your hand when removing the mower blade. You can use a lawn mower blade clamp over the blade to secure it. Unscrew the bolt to remove the blade and then the engine baffle. Once the pulley unit is exposed, you can remove the entire drive belt. Insert the new drive belt and place one end on the rear pulley and re-attach the engine baffle. Then, place the mower blade back (making sure it's facing the correct way with bottom of the blade facing the ground) and tighten the bolt. Remove the clamp and return the mower to its upright position so you can place the other end of the belt to the front pulley. Remember to tighten the screw to the tension spring.
Put the front drive cover back on, tighten the screw that secures the cover to the deck and reconnect the spark plug wire. Add new fuel to your mower and you're done!

all most every blade mount bolt turns out in a counter clock wise rotation facing the bolt head

I think either the bolt holding the left blade onto the spindle is loose, or the cup washers under that bolt are flattened or missing. As a result, the blade is slipping on the shaft and probably making a squeal or squawk. Take off the deck, flip it over, and remove the blades. Note if the bolts seem tight. And look at the washers stacked under the bolts. Replace any missing washers, or flattened cup washer. Make sure the cup washer faces the right way (hollow side toward the blade). Tighten things back up securely - it takes a hefty pull on the end of a 2 foot long wrench to get enough torque.

It will loosen as a normal bolt, left to loosen. but sometimes you will have to use a better force to break the tightness, such as a rubber mallet. Use something to lock the blade down from moving while taking the bolt off. Just don't lock it down against the mandrel or blade pulley.

Yes it's the right direction but because of so much heating and cooling those bolts get really tight.Spray alot of penetrating oil (WD-40) on and around the bolts.You may even want to tap the wrench on the bolts in the opposite direction slightly (tighten) to help loosen their adherence,then try the right way to losen them.Dont use a torch! It'll melt the "O" ring on the caliper piston.Take your time

check your front tire air pressures