Chainsaw Repair

I am new to the forum and I have read alot of information on chainsaws. I have a 450e Husqvarna runing low grade unleaded fuel in the saw. Its been runing crappie. I am going to change out the fuel line attached to the filter. The question,I have the replacement OEM fuel line looks different than the line that is currently installed in the 450e saw. There are two lines on the right side of the carburator the front line looks to be the line to replace because of the length and the rear line appears to be the return fuel line? What is the best approach to install the new replacement line with minimal problems?  Advice greatly appreciated. Thanks.

The original part number for the line is 544 12 86-01 it changed to 523 05 52-01, this is a formed line.  Do not use the old style line.

The easiest way is remove screws from tank but you do not need to remove the tank just get it down about an inch or so.

There was a change on the original line, a problem with it kinking the new line is made just a bit different, takes less than 15 mins to replace the line.

Sorry never been in one to date. 

Husqvarna  450 450e   IPL  http://m.husqvarna.com/ddoc/HUSI/HUSI2011_AAaa/HUSI2011_AAaa__55.pdf

Thanks for the Husqvarna 450e web site.I have downloaded and printed the manual. Information much appreciated!!

page 24-26 show mounts on the IPL