Running a Husqvarna chainsaw can be a pleasurable experience, due to its light weight and fast chain-blade. Occasionally, the chain blade may become loose and be thrown off of the chain's guide bar. Putting the chain blade back on a Husqvarna chainsaw is a fast and easy operation.
Using the 3-inch-wide paintbrush, clean any loose sawdust and debris from the saw and bar. This will make the job easier.
Put the leather gloves on your hands to protect them from the sharp edges of the bar and chain-blade teeth. Use the chainsaw bar wrench to loosen to the two bar nuts. Then, use the slotted blade end of the wrench to loosen the tension screw located below the bar nuts. This will relieve the tension on the bar.
Remove the bar nuts and the plastic housing. Take the paintbrush and clean the inside of the housing and the clutch area of any remaining sawdust. Remove the bar and clean with the brush. Inspect the bar for any damage or gouges in the running groove area of the chain-blade guide.
Replace the bar on the stud bolts, being sure the blade tension stud is in the bar's guide hole. Feed the new chain blade behind the clutch onto the drive teeth, then slide the chain blade's socket teeth into the bar's guide groove.
Replace the plastic cover over the stud bolts and tighten the nuts by hand until the cover is seated firmly to the main case of the saw. Using the slotted screwdriver end of the bar wrench, slowly turn the tension screw to tighten the chain blade. Use one hand to slide the chain blade while tightening the tension screw.
Use the bar wrench to tighten the stud bolts to firmly hold the case against the bar. Check the tension again of the chain blade once everything is tight. Start the chain saw and give it a few revs. Shut the saw off and test the tension of the chain blade. If it is still okay, you are ready to cut. If not, re-tension the chain blade and re-tighten the stud nuts.