2014 660 chain brake almost impossible to engage

[Hats]

Hi guys wondering if anyone's had the same problem with their 660, the other day I was using it and the brake just wouldn't engage unless you really smacked the brake forward, I took it home took it apart, cleaned it out but still same problem. It's still under warrenty and honey bros said they would fix it but it's just a pain in the arse to send it away so I wana try sort it myself first. Many thanks H

[wisecobandit]

When you say you cleaned it did you remove the cover/plate above the clutch and clean the mechanism and spring area? That's where they get gunked up normally.

[Hats]

Yep sure did and it all looks in order

[mendiplogs]

Yep sure did and it all looks in order

 

Hi hats take it back mate to the shop mate thanks Jon

[scotspine1]

try a little WD40 on all moving components of the brake, then wipe down, don't flood the place with it, seen it work on the same problem with a MS461.

[dan494]

I assume they fixed the newer ones but we've got one about ten years old and the chain break plastic melted from the exhaust heat

[mendiplogs]

I assume they fixed the newer ones but we've got one about ten years old and the chain break plastic melted from the exhaust heat

 

Hi DAN mines ok it a 2014 660 thanks Jon

[Hats]

Will do wd never hurt no one

[Wolfie]

If the brake works fine when the saw is cold but becomes impossible to engage when hot then it's the same as mine and I believe is a common problem with the 660.

As said earlier, it's the exhaust heat that causes the plastic handle to lose rigidity.

I've put a duel port muffler on mine, had the exhaust outlet adapted and also put so reflective adhesive on the handle. It's helped but it's still a problem.

[Mark Bolam]

I had the same with mine, about 2008 model.

Exhaust heat used to affect the plastic.

It sorted itself out after a month or two.

 

It was dangerous because the temptation was to push the brake forward with your right hand to make it engage, which is a very bad idea.

 

 

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