2014 660 chain brake almost impossible to engage

[mendiplogs]

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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Hi mark if you ring STIHL up they will fix it on your saw they offerd me that on a old 660 like yours thanks Jon

[Mark Bolam]

Been fixed for years mate.

 

I think it was one of the first models fitted with the 'auto-self-fixing' chainbrake.

 

I think the manifold melted enough plastic after a while that it didn't catch any more.

 

 

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[Ian C]

Hi mark if you ring STIHL up they will fix it on your saw they offerd me that on a old 660 like yours thanks Jon

 

The one you sold me jon did the same and developed a rubber brake handle :sly:

[outsider]

Had the same problem with mine, it was about 3y ago. Engineers from stijl germany came tot solve the problemen. It was due tot a faulty brake rim. They had a bas lot of brakes.

[spudulike]

If he handle melts you have a number of issues, a plastic that melts at too low a temperature, a handle that should have steel reinforcement where it gets hot and exhaust gasses that can rise on to the handle when in a deep cut.

 

Having said that, I have seen some of the maintenance or lack of it that you give your saws safety systems.

 

I reckon one in ten Ms200Ts I get in have a decent chain catcher in place and one in twenty actually have a clean chain brake mechanism!

 

The last one had trashed clutch springs but what does that matter, the chain brake stops the chain spinning - the only issue is the clutch catches the clutch drum all the time and builds up heat that melts the cover.......

 

Had to mill out the damaged plastic with a carbide burr:001_rolleyes:

[Coletti]

Friend of mine had the same problem the other day but only when it gets hot, it's fine when completely cold. The issue is shoddy plastic/lack of heat shielding from the exhaust. Common fault with all the 660's I've used

[mendiplogs]

The one you sold me jon did the same and developed a rubber brake handle :sly:

 

HI IAN ring STIHL it not that old of saw thanks jon

[mendiplogs]

Friend of mine had the same problem the other day but only when it gets hot, it's fine when completely cold. The issue is shoddy plastic/lack of heat shielding from the exhaust. Common fault with all the 660's I've used

 

HI MATE A DAUL PORT MUFFLER helps loads thanks jon