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Old January 12th 19, 06:05 PM posted to uk.d-i-y
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Default Chainsaw issue


"rick" wrote in message
...
On 12/01/2019 15:06, harry wrote:


Check fuel tank/filter for debris/chippings blocking outlet pipe.



Any idea how to get to that ?

I just took plug out again .. nice biscuit colour so all seems well there.
Used compressed air to blow through carburettor breather pipe back to
tank - all clear.

Carburettor is a Zama W26 .... not sure if it has a diaphragm or not, if
so I suppose that could be suspect.



just had the same thing on a leaf blower
new diaphragm fixed it

-



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Old January 12th 19, 06:39 PM posted to uk.d-i-y
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Default Chainsaw issue



"rick" wrote in message
...
I have a McCulloch 360T
Starts fine .. either hot or cold ... which in itself is a good indicator
that many things are Ok with the saw.

In use ... be cutting fine then revs will die, then get to a point with
chain out of the wood .... tickover is fine, but when I try to rev it
picks up, but after about 20-30% of power then dies off ... often to a
stall.
It can often take 10 or more attempts before it will get to point that
revs will open up .. then it cuts fine ... but a few minutes later it will
start again.

When it is revving it cuts fine with no loss of power.

I have cleaned air filter, checked plug gap, used new fuel, general clean
to get rid of any oil or wood chip build up.

Any tips ?


Sounds like you have something in the carby that moves
around and blocks the jet when you get the loss of power.

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Old January 13th 19, 02:25 PM posted to uk.d-i-y
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Default Chainsaw issue

On 12/01/2019 16:56, Jim K.. wrote:



Need a special tool to remove H & L adjustment screws (mixture) as they
are splined - just ordered one ..... I'll remove and see if any gunk in
them.
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Old January 15th 19, 12:20 PM posted to uk.d-i-y
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Default Chainsaw issue

Tim+ pretended :
newshound Wrote in message:
On 12/01/2019 14:31, Tim+ wrote:
rick wrote:
I have a McCulloch 360T
Starts fine .. either hot or cold ... which in itself is a good
indicator that many things are Ok with the saw.

In use ... be cutting fine then revs will die, then get to a point with
chain out of the wood .... tickover is fine, but when I try to rev it
picks up, but after about 20-30% of power then dies off ... often to a
stall.
It can often take 10 or more attempts before it will get to point that
revs will open up .. then it cuts fine ... but a few minutes later it
will start again.

When it is revving it cuts fine with no loss of power.

I have cleaned air filter, checked plug gap, used new fuel, general
clean to get rid of any oil or wood chip build up.

Any tips ?


Chain jamming or chain brake fault? I presume you?re using the correct
oil/fuel mix and the engine isn?t tightening up? How about the chain oiler?
Is it consuming oil at the expected rate?

Tim

Possibly although my money would be on Chris and Harry's suggestions of
a fuel blockage.


Inclined to agree. ;-)

Tim


I agree - it sounds as if it is running out of fuel, despite fuel in
tank. Check the fuel pickup pipe in the tank - if should be flexible
and have a weight in the end, so gravity keeps it in the fuel.


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