Husqvarna , No.455 Rancher, 20" Gas - Powered Chainsaw Logo
Posted on Feb 21, 2010
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I need to set carb on a husqvarna 455 back to factory

I need to set the carb on my husqvarna back to factory setting

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  • Posted on Feb 21, 2010
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Joined: Sep 02, 2009
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Start with "H" and "L" 1 turn CCW from lightly seated. Then tune for performance like this.
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm
CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
There are 2 wav (sound - idle & full – may not be highlighted) files that I find most helpful, I think you will too. HTH
Lou

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Related Questions:

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1answer

What is the adjustment below the H & L supposed to be set at? husqvarna 455 rancher
The carburetor should be set by an authorized Husqvarna dealer. It is ******* to adjust these screws. However, to get the unit "close" and running, turn both H and L screw in until they lightly seat. Then turn them both out 1 1/2 to 2 full turns. This is a baseline and will get the unit running. The dealer should do any final adjustments.
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Setting hi lo on 235 husqvarna
You need a special tool to adjust the mixture screws, i have to say they are not easy to tune, you will also need a rev counter to set the high revs, it is very difficult to give basic settings for the carb as they vary greatly
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Sep 30, 2013 • Husqvarna , No.455 Rancher, 20" Gas -...
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Factory carburetor settings for a husqvarna 455 rancher chainsaw
Walbro carbs are generally (screw right in) then turn anti clockwise out
H 2 & 1/4 to 2 & 1/2
L 2 & 1/4 to 2 & 1/2
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Apr 17, 2013 • Husqvarna Garden
1helpful
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Wher do the two carburator linkages hook up to a husqvarna on a 455 rancher
The throttle wire plasric end sits through the back of the crancase and into the square cut a way into the tank back handle, the hooked wire end drops into the carb throttle spindle on the r/h side of the carb, the blue clip on the spendle then rotated and locks the wire in, the choke pull just pushes into the choke spindle on the l/h side of the carb, it has a bullet style end to stop it popping out again
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Dec 06, 2012 • Husqvarna , No.455 Rancher, 20" Gas -...
1helpful
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Not getting gas to the carb
needle valve could be stuck shut ,gas could be gumed up at carb.
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Oct 20, 2012 • Husqvarna , No.455 Rancher, 20" Gas -...
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Why rapid fuel consumpsion on the husqvrana 455 rancher?
There are only a few reasons, either the saw is running too rich on the carb settings ( i think you would know notice this due too poor engine performance ) or the air filter is blocked ( again this would effect engine performance ) or the the tank is leaking.
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Oct 18, 2012 • Husqvarna , No.455 Rancher, 20" Gas -...
1helpful
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My 455 Rancher Husqvarna 20 inch chainsaw wont stay running while idling. its a brand new saw. don't know if it needed to be adjusted or if its pre adjusted already. Starts and runs fine but just won't...
Carb adjustmwnt requires a special tool and a tacho, the saw is set from the factory for the best emmisions, however it may need a small adjustment, this should be done by a qualified dealer, incorrect adjustments can damage the engine.
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Jan 02, 2011 • Husqvarna , No.455 Rancher, 20" Gas -...
3helpful
1answer

Turning up the bar oil?
An “OM, 455e Rancher, 455 Rancher, 460 Rancher, 2009-09, EN, FR, ES” Follows (may not be your saw):
http://weborder.husqvarna.com/order_static/doc/HOUS/HOUS2009/HOUS2009_1151382-49.pdf
An excerpt from page 38 of the above OM follows (forcing it may render it inoperative):
Adjustment of the oil pump
Adjustments are made by turning the screw using a screwdriver or combination spanner.
The machine is supplied from the factory with the screw set to position 2.
Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow.
Recommended settings:
• Bar 13"-15": Position 1 (full CW)
• Bar 15"-18": Position 2 (center)
• Bar 18"-20": Position (full CCW)
These recommendations apply to Husqvarna’s chain oil, for other chain oils increase the oil flow by one step.
WARNING! The engine must be stopped when making adjustments.

All OMs and IPLs can be found here:
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. HTH & Good Luck.
Lou
Thank You for using FixYa.
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Apr 27, 2010 • Husqvarna , No.455 Rancher, 20" Gas -...
0helpful
1answer

Want start
Read the warm start procedure from the operators manual.
1. Pull choke (sets fast idle)
2. Push in choke (fast idle retained)
3. Make sure ignition is on, pull (usually once on my saw)
4. Advance throttle slightly to release fast idle.
I made the mistake ONCE of not setting the fast idle. My shoulder gets sore thinking about it. HTH
Lou
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Sep 21, 2009 • Husqvarna , No.455 Rancher, 20" Gas -...
0helpful
2answers

455 Husqvarna chainsaw will not run
Remove exhaust , check piston make shore you have a chance,
check ex screen isn't blocked.
check choke isn't stuck on,and half throttle is working. get back to me from there.cheers
Read full answer
Dec 22, 2008 • Husqvarna "Chain Saw - 16" Bar, 3 Hp
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