Question about Husqvarna , No.455 Rancher, 20" Gas - Powered Chainsaw

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How do I release the brake spring with the cover off?

The chain came off-I opened the cover to get it on and now I can't get the cover back on cause can't release the brake spring. How do I release the brake spring with the cover off?

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I had this problem once and it was very tough for me to fix. Maybe there's a tool that makes it easier but I struggled with vise grips and pliers for our until I finally got it flipped back. I had to take off the plastic cover that encloses the spring to do it. It's definitely easier for two people.

Posted on Sep 09, 2009

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You should be able to pull the brake handle back even with the cover off. This should lock the brake in the correct position so you can put it back on the saw. If this does not work there may be wood debris that is causing the brake to get stuck. It may not be allowing free travel of the brake clamp. Inspect cover to see if there is a lot of wood pulp. Clean the cover and try installing it back onto the saw.

Posted on Sep 09, 2009


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Hello. I own a Husqvarna 350 chainsaw. 25 minutes of use and the chain popped-off the bar. After inspecting the chain I noticed that some links were not bending, thus making me believe that the oil...

I have seen something similar on my own saw some time ago. Probably two things have gone wrong. First there is something wrong with the transfer mechanism between the clutch handle and the brake spring. I do not remeber the exact detailsy, but there is a plastic part engaging a metal part in the transfer mechanism between handle and spring, that tends to wear out so that it will not release the spring when moving the brake handle. (look at the engaging mechanism where the handle is turning on its axle/bolt) If you take off the chain guard / cover you should be able to follow or see this mechanism and use a screwdriver and a pair og pliers and try to move the transfer mechanism so that the brake can be set to the released position. Once this is done the brake mechanism/cover can be taken off and you can clearly see what part that needs to be changed (I think it was the handle itself, due to worn out enganging plastic lugs). The brake spring obviously needs to be disengaged when assembling and disassembling.

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Husq 455 rancher chain saw. the chain locking spring in the cover is in the lock position and will not mount on the saw. how do i release the spring tension?

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Oct 12, 2010 | Husqvarna , No.455 Rancher, 20" Gas -...

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Bought a new Husqvarnia 450 chainsaw and folowed the instructions to fit the chain bar. I found it difficult to take off the clutch cover (the brake had not released fully). I cannot get the clutch cover...

I guarantee you are not the first to experience this. In the future if the clutch cover is difficult to remove please do not!
Reset Chain Brake
Immobilize the clutch cover (blocks of wood on a flat surface to protect the finish) in a vise or with a large C-clamp to a work surface.


Use pliers or a crescent wrench and rotate it clockwise until it latches open. This will require some force. A slight modification reported in a testimonial to the above method follows;
" Thanks for the help. I took your answer and modified the fix a little. I placed the cover on loosely and then moved the bar handle into the right position in order to engage the spoked wheel, then rotated the handle back until the cover fit right. Thanks, SG " – NameRemoved

If you have more questions or need additional help please reply below and I will get back to you. HTH & Good Luck.
Thank You for using FixYa.

Jul 14, 2010 | Husqvarna Garden

1 Answer

How do i release the brake spring on a husqvarna

Immobilize the clutch cover (blocks of wood on a flat surface to protect the finish) in a vise or to a work surface,


Use pliers or a crescent wrench and rotate it clockwise until it latches open. This will require some force.

If you have more questions or need additional help please reply below and I will get back to you. HTH & Good Luck.
Thank You for using FixYa.

Jul 01, 2010 | Husqvarna Chain Saw 20" Bar

2 Answers

Is it possible to adjust the chain break & how to do it.

hate to say this,but,there is no way to adjust the tension on the brake band.either the spring is weak or the brake band is broken.either can be changed but it's not easy.spring is under a lot of tension and can fly out when taking it apart or installing,you can get the entire cover as a unit if so desired...hope this helps,let me know

Apr 21, 2009 | Garden

18 Answers


I used applman08's solution. A few pointers:
0. This problem occurs when you take off the side cover while the brake is set. So after you fix this, don't do that again.
1. When removing the clutch, place the screwdriver in the notch next to where it says "off" and tilt the screwdriver down so that when you strike it you are applying a clockwise shock force that is almost horizontal (assuming your 455 is on its side).
2. DO NOT remove the spring! There is a plastic housing that basically holds the brake mechanism in place (secured by 4 screws). If you take that apart, and then take out the spring, you will be learning how the brake works and spending some time compressing that spring and getting it back in. You'll have to come up with something clever to get the spring in depending on tools available.
3. Going back to 1. - get that clutch off, put the side cover back on, getting that brake lever lined up with the very-difficult-to-grab three-toothed mechanism for engaging the spring. Tighten down the side cover, or hold it snug with one hand while you lever the brake handle with the other. You will hear a satisfying snap as the braking mechanism (with the spring I told you not to mess with) resets.
Note: You can probably reset the braking mechanism by manually turning that three toothed gizmo but it's really hard to grab and the brake handle fits it perfectly. The key is you've got to turn that about 60 degrees.
Good luck, this was an annoying problem.

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