You need certain things to be correct for the engine to run, clean fuel getting to the cylinder, a spark ( occurring at the correct time ) and the machine to be mechanically sound.
So remove the spark plug, is it wet? if not remove the hose and filter from inside the fuel tank, remove the filter and replace, if the plug is wet, then place the plug against the cylinder ( away from the open plug hole ) crank the engine, is there a spark? if not replace the ignition unit, if there is a spark, remove the muffler and check the condition of the piston face through the open port, any signs of scuffing or melting the saw has seized and will require stripping to assess the condition.
SOURCE: weak spark on 55 rancher chain saw/ airgap on magneto
the air gap is .010 to .012 inches,hope this helps, if not contact me and i'll help you with anything i can
SOURCE: Husqvarna ranger 55 chainsaw starts but quits
I too have a rancher 55 and had what sounds like the same problem this week. It would start fine but run for only a few seconds at a time. I took it all apart today and found the problem - a cracked fuel line. In the places where I could see the hose it looked fine, but it wasn't until I removed the fuel tank that I found the crack...right where it exits the tank and then goes thru the housing above it. You don't need to remove the tank to replace the hose but it is easier that way. You do have to push it thru a grommet at the top of the tank. I read some other posts about checking the tank vent to see that it's not plugged up. Mine was ok so I knew it had to be something else. The vent is in a hole about the size of a pencil and is recessed about an inch into the tank on the upper right side. Its partially covered by a plastic cap that's part of the vibration damper, which can be removed to gain access to the vent. The vent tube can then be pushed out from inside the tank with the use of long needle nose pliers, but be gentle. I just loosened it then pushed it out with a finger. I put it all back together with a new hose and its running like new again!
SOURCE: Husqvarna chainsaw model 359 will not restart after refuel
Make sure you use the highest octane unleaded fuel you can buy. Make sure your mixture is exactly as prescribed, even the slightest deviation can be a problem. My Husgavarna 359 had the problem just like yours when it was new, new. I would have to take the spark plug out and let it dry out or blow it out with air. It would then run like a top.
SOURCE: I have a Husky 55 Rancher, was sawing a tree and
Yes. this checks both. Change the plug first <$5 plug >$50 coil.
Ignition Coil Test by SmallEng.com
http://www.youtube.com/watch?v=L7WNBDRG4C4
You may need to use a jumper wire between the threaded part of the plug and the cooling fins. You do not have to bend up the electrode.
Ignition module gap
Place a business or index card between the fly wheel and coil, rotate until the magnetic attraction pulls everything tight together. Tighten the coil screws, rotate the flywheel until the attraction eases and remove the card. Ensure nothing contacts when flywheel is rotated.
Ignition Coil Test by SmallEng.com
http://www.youtube.com/watch?v=L7WNBDRG4C4
You may need to use a jumper wire between the threaded part of the plug and the cooling fins. You do not have to bend up the electrode.
Ignition module gap
Place a business or index card between the fly wheel and coil, rotate until the magnetic attraction pulls everything tight together. Tighten the coil screws, rotate the flywheel until the attraction eases and remove the card. Ensure nothing contacts when flywheel is rotated.
HusqvarnaUSA.com
http://www.husqvarna.com/us/homeowner/support/download-manuals/
Enter the 3 digit model number (no XPs, Es, just the numbers)
Serial number decode – useful when downloading IPLs and Manuals
06 1500198
06 = year produced – 2006 (single digit before 2000; please contact Husqvarna for single digit clarification http://www.husqvarna.com/us/homeowner/support/customer-support/)
15 = week produced – March
00198 = 198th unit Husky produced that week
If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou
SOURCE: Husqavarna rancher 55 repairs
R² Drive Link Outboard Clutch by Drivelink.blogspot.com
http://www.youtube.com/watch?v=cdqkIuVNUQc
• I suggest a length of nylon rope (nothing left behind) be used instead of the piston stop (retain 6" ± so you can remove it).
• Make certain the piston is near the top of the cylinder before feeding the cord or it can fall through the exhaust port and damage the piston as it rises.
If you have more questions or need additional help please reply below and I will get back to you. HTH & Good Luck.
Lou
Thank You for using FixYa.
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