Help with top handle chain running constantly.

[jfc]

Hi folks,

 

I was dismantling a tree yesterday when my Stihl 200 cut out, when restarted the chain was running constantly with the chain brake off. Also seemed to be ticking over very fast. This all happened mid-air without altering any settings on the saw.

 

I came down the tree, took off the side cover and cleaned all round the chain break etc but still idling fast and chain running as soon as the brake was off.

 

Any suggestions as to what's wrong, before I take it in to the local repair shop?

 

Thanks.

[Peter]

Could be an air leak in thefuel line, 200T are prone to them.

[Mick Dempsey]

Yes, crank seals as well, I had similar problems with the last of my many 200s, never did resolve it, ended up spending half the price of a new saw without sorting it out.

Check your clutch springs as well, just in case.

[jfc]

Cheers guys , both those sound like a trip to the repair shop, but I will check the springs. I love that saw so hope it's not terminal/financially not viable repair.

 

jan.

[TTP]

Was it running out of fuel my 200t can rev higher when not much fuel left.

[Peter]

As with any fault finding, be methodical and check the easy stuff first. Most of the time it's something simple.

 

Chain tension.

 

Fuel level

 

Clutch springs

 

Fuel lines

[woody paul]

As said above but check clutch bearing is OK and that nothing else is jamming clutch to crank shaft ( small bits of wire or string can do this)

[Maxnaggle]

if the problem just happened without any graduation i would check the linkages between the trigger and the carb, sounds like something not closing or returning properly.

[Stubby]

I'm with the air leak guys . Impulse line maybe .

[treequip]

I'm with the air leak guys . Impulse line maybe .

 

My money is also on air leak