Stilh 009

[Simon16]

After getting advice from earlier my saw runs past the 15 min mark now. Fuel filter was blocked.

Now after an hour of use or when new fuel is added it is a bugger to start.

Could it be the mixer screws that need to be adjusted 

Thanks advice appreciated 

[Macpherson]

Hi, it seems that your heading in the right direction, probably worth stripping and cleaning the carb, not difficult.... but if you've not done it before take pics of each stage with your phone just to make reassembly easier, try not to damage the gaskets [ sometimes they stick to both faces and can get torn ] a stanley blade can help with this. 

 

When you find the needle valve there should be a very fine mesh filter in the hole on the other side of the casting from it where the fuel feeds in .... need to watch you don't lose it or blow it away.

 

If you just want try an adjustment, the starting point for both L and H screws is 1 turn out according to the manual I sent you.

.. it makes sense to take note of where they're at before you start by screwing each one home while counting how much it turns... this way you can always get back to your starting point.

 

Make sure the saw's warmed up before you start fiddling and also it's good practice to only make 1 adjustment at a time so you get an understanding of what's going on. The ' L ' screw is your first port of call,  generally speaking you want to adjust it to the point at which the engine runs fastest and then turn it in just a touch while adjusting the tickover to suit, also make sure the air filter is clean before you start.... it's primitive on these old saw's and I've found that it clogs quickly sometimes..... good luck.

[bmp01]

48 minutes ago, Macpherson said:

The ' L ' screw is your first port of call,  generally speaking you want to adjust it to the point at which the engine runs fastest and then turn it in just a touch while adjusting the tickover to suit, ...

...turn it OUT just a touch.... ?

 

Better pick up if it's a tiny bit rich. 

Nice ' how to'  though. 

 

[Macpherson]

2 hours ago, bmp01 said:

..turn it OUT just a touch.... ?

 

Better pick up if it's a tiny bit rich. 

Nice ' how to'  though. 

 

Yeah thanks...... I meant just turn it back a touch from the point that it becomes overly rich to just when you get good pick up when jagging the throttle with as little lag as possible.   cheers

[Simon16]

1 hour ago, Macpherson said:

 

Yeah thanks...... I meant just turn it back a touch from the point that it becomes overly rich to just when you get good pick up when jagging the throttle with as little lag as possible.   cheers

Thanks guy's will give it a go tomorrow 

Cheers

[bmp01]

21 hours ago, Simon16 said:

After getting advice from earlier my saw runs past the 15 min mark now. Fuel filter was blocked.

Now after an hour of use or when new fuel is added it is a bugger to start.

Could it be the mixer screws that need to be adjusted 

Thanks advice appreciated 

Have a look at my post in your other thread ..... I suspect you are going to find the same thing in due course. Or you could bite the bullet and overhaul the carb and fuel lines now. The trouble is you can chase your tail backwards and forwards ad-infinitum - if bits of the system are misbehaving.