How do you install ignition chip on homelite xl12 chainsaw

SOURCE: IGNITION PROBLEM

Give Sam a call @ Hawkins and Milnor in Selbina Mo. Have you UT number handy, and on some homlites they used Wico ignition and some used Prestolite. The UT number should clear that up. They will have either set on hand and get them right out. Great people to work with.

SOURCE: I need to know the procedure for replacing the fuel line

The procedure is logic and common sense buoyed up with as much information as you can obtain.

This is a typical fuel system and a tip or two:
http://www.fixya.com/support/r3706813-2_cycle_fuel_system_repair

The IPL (exploded parts list) for your saw is the only detail for fuel line routing and it is sketchy at best; components are listed but may be on different illustrations. (About 30 XL-12s; I defer to you)
Homelite/Ryobi.com (authorized parts supplier)
https://www.gardnerinc.com/recons/disclaimer-lg.php - Agree; Choose “Product Line”; “Select OEM” & “Select Catalog” both to “Homelite Consumer Products”. A drop down list appears; self explanatory from here.
The numbers Homelite & Ryobi use do not match the numbers everyone posts. A careful inspection of your saw should find something that matches. Good Luck. HTH
Lou

Testimonial: "Although I didn't get model specific help the solution was very helpful with the general ideas and is the reason my saw is fixed now. Thanx A hole lot"

SOURCE: set carb homelite chainsaw mod ut 10939

No response to CR.

SOURCE: Homelite 10540 chainsaw 35CC chainsaw won't start when hot

Go to: http://www.drystacked com for a 12 page article on Walbro carburetor theory and troubleshooting. Check particularly, the position of the gasket in the lower chamber. Check the spark plug for blue, snappy spark when the engine is hot. If ok, place a small amount of fuel mix in the cylinder and try for start. If it pops several times, look to the fuel system. Check the fuel filter, air filter, and muffler for plugging. Does the primer bulb fill with fuel after several pumps? Check the fuel lines for decay or other damage. When the engine is hot, try not using the choke, but set the fast idle. Hope some of this helps!

SOURCE: Chain Saw Motor will not start.

Yes it is very important i would recommend also putting in a new spark plug. Thanks for asking and I hope it helps