Question about Husqvarna 450 e-series 18" Chain Saw
The 450E is a tooless system, make sure the brake is off by pulling the handgurd fully back to the top handle, flip up the lever on the big grey fixing nut, undo counter clockwise, wind the grey knurled adjuster wheel facing out of the cover fully back, remove the chainbrake side cover, push the guide bar fully back toward the sprocket, you now have enough rome to replace the chain onto the guide bar rails, now re fit the side cover, make sure the adjuster pawl in the cove aligns with the adjuster hole in the bar, re fit the big fixing nut finger tight, wind the adjuster wheel down to re tention the chain, when the chain is snug all the way around the bar tighten the nut fully.
Posted on May 30, 2011
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Posted on Jan 02, 2017
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The side plate on most chainsaws will be held on by two nuts. Loosen the blade adjustment screw (a pin that is usually driven by a screw and pushes the blade out from the chainsaw to keep the chain tension tight).
The old chain is ready to be removed now that the sprocket plate is off of the saw. Pull the nose of the chainsaw's bar away from the chainsaw to release it from the tensioner.
Remove the old chainsaw chain.
The chain will easily remove from the guide bar with all that slack in it. Note the orientation of the cutting edges of the chain so you put the new one on the same way.
Pull the drive links out of the guide bar and slip the other end of the chain around the clutch drum.
Carefully thread your new or recently sharpened chainsaw chain around the chainsaw's clutch drum, making sure that the drive links engage in the sprocket.
Thread the rest of the drive links into the guide bar and around its nose, making sure all links are in the guide bar slot.
With the chain properly threaded along the clutch drum and guide bar, put some tension into it by pulling on the nose of the guide bar away from the chainsaw.
While pulling the guide bar, make sure to seat it onto the saw's adjustment pin.
Replace the side plate.
The side plate is ready to go back on as long as the guide bar is properly positioned beneath.
Replace the plate and the nuts that hold it into position, but do not tighten the nuts down all the way yet. The guide bar must be allowed to move a little while the chain is tightened to the correct tension.
Finish tightening the side plate nuts.
The chainsaw chain replacement is now complete.
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