Tip & How-To about Garden

Replacing brake band on Husqvarna 357/359/340/345/350/346/445 and many others

Before attempting to repair any chain brake, eye protection should always be worn, these machines all have an out board chain brake, known as a knee link brake due to its actuating mechanism, start by makeing sure the brake is off, by pulling the brake handle fully back to the top handle, now remove the bar securing nuts, remove the brake/side cover, the hand guard stays with the saw, so the cover is quite difficult to hold when removing the spring, so take two 8 mm bolts, clamp the hex heads in a vice, spacing them out the same as the fixing holes in the brake, now fit the brake /cover band up onto the up standing bolts, use the two bar nuts to secure the brake to the bolts, now insert special tool part no. 502522202 into the actuating quadrant and turn to activate the brake ( this will remove much of the spring tention ) if you do not have the tool you can remove the hand guard from the saw and use that, or a sturdy pair of long nose pliers, now remove the cross head screws from the spring cover, edge the back of the spring up enough to insert a suitable screw driver into the end, lever the spring up and onto the screw driver shaft ( this will stop it flying out ) remove the c clip securing the actuating quadrant to the brake cover, gently lever out the roll pin in the anchor end of the band, the band will now lift out of the cover, remove the single cross head screw securing the knee link mechanism to the band. Refit the new band into the knee link and re fit the screw, re fit the quadrant onto the post in the cover and re fit the e clip, press the anchor end of the band back into the cover, insert the spring back onto the knee link spigot, compress the spring and push it back into the cover, the best way to compress the spring is to use a good pair of long nose pliers, push the closed jaws into the end of the spring ( this will stop the spring flying out ) now push the pliers in to compress the spring against the knee link, and back into the cover, refit the spring cover screws, you now need to load the brake before it can be put back onto the saw, use the special tool, or the removed hand guard to do this, it will take a fair amount of force to re load the brake, once loaded re fit to the saw.

Posted by on

Garden Logo

Related Topics:

Related Questions:

1 Answer

How to reassemble chain brake on an Echo CS-350T that jammed and was pulled apart by someone else?


From what I see you will need assemble thing leaving the main spring and brake cover off. Before attempting to put the main back in install a clutch drum inside the brake band. Then you slip on the main spring and pry the end on with a flat blade screw driver. Now install in the cover for the spring and brake. Reset the chain brake and remove the drum.

Now install the chain brake on the saw and test. Do not trip the chain brake without the clutch drum in place. If these are anything like the Husqvarna version after they get worn they will get where it is nearly impossible to reset.

Echo CS 350T Chainsaw CS350T Parts Diagram Page 7

Jan 12, 2015 | Echo Garden

1 Answer

I still need help with this.


Some models of top load washers use a clutch assembly to drive the wash basket during the spin cycle. A burning smell in your washing machine can be a result of a worn clutch, and your machine will likely be making a loud scraping noise during the spin cycle. Another common sign of a worn clutch is brake dust or shavings found underneath the washing machine. If your machine displays any of these symptoms, the clutch may need to be replaced. The clutch is normally located at the input to the basket drive and you will need to remove the cabinet and motor assembly to gain access. Clutch assemblies are often under spring tension and you should always wear protective clothing and remove power from the appliance when attempting this repair. hope this helps

May 29, 2017 | Washing Machines

2 Answers

What are the steps to getting the chain saw started and idling? What are next steps to cut tree limbs and oil the chain? This chain saw was given to me without a manual.


If you are a complete novice you should seek some training before attempting to use the machine, as you do not say what model this is we will go through basic starting procedures, fill the fuel tank with fresh fuel mixed with two stroke oil at 25-1, fill the chain oil tank with a non fling chain oil, switch the ignition switch to on, pull the choke fully out, push in the deco valve if fitted, place the machine on the ground, with the tip of the bar away from any obstructions, put your right foot through the back handle to hold the saw down, place your straightened left arm and hand onto the top handle again to hold the machine, now with your right hand crank the engine until it fires once, at this point push the choke fully back in, crank the engine once again until it fires up, flick the trigger to dissengage the part throttle , the machine should now idle.
Be carefull.

Jun 05, 2011 | Poulan Garden

1 Answer

How do you pull the chain break apart on a poulan chainsaw 2150 and repair it.


The brake is a saftey item on the saw and should only be repaired by a quailified fitter, however if you should decide to do it yourslf that is down to you, the brake is a so called knee link brake, start by removing the brake from the saw, once removed activate the brake by pushing the hand guard forward untill you hear the brake come on, now remove the allen screw in the hand guard pivot ( do not remove the c clip in the side of the hand guard ), tap the pivot collers out from either side and remove the hand guard, remove the cross head screws securing the spring cover, BE AWARE THERE IS A COMPRESSION SPRING UNDER HERE, eye protection should be worn, with the cover off, pry out the spring, remover the small pin securing the knee link mechanism, using a small punch tap out the roll pin from the other side of the cover that secures the anchor end of the band, it should now come away, remove the cross head screw holding the band to the knee link mechanism. You can now replace the band, refit the the knee link to the new band, re fit to the machine, tap the roll pin back into the cover to secure the anchor end of the band, re fit the knee link pin, re fit the spring ( be carefull ) re fit the spring cover, place the hand guard back on the cover, use a suitable tapperd punch to insert through the hand guard and cover to hold it in place, now pull the hand guard fully back to load the brake, remove the punch and re fit the pivot collers and allen screw. Make sure the brake now functions properley.

Apr 09, 2011 | Poulan Garden

Not finding what you are looking for?

2,892 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Garden Experts

Dennis Key
Dennis Key

Level 3 Expert

2478 Answers

john h

Level 3 Expert

12166 Answers

yadayada
yadayada

Level 3 Expert

76109 Answers

Are you a Garden Expert? Answer questions, earn points and help others

Answer questions

Loading...