Stihl chainsaw cutting issue

[Dazonit]

Having the same sort of problem with my stihl 024 it bogs down/sticks with very little pressure on it thought it may be the clutch so put a new one in still the same now thinking it might be the sprocket /clutch cover (don't know its name) that is worn or reading the above might need a new bar I dressed the bar after reading the above but still the same any ideas cheers

[TGB]

Worn bar rails.

[Dazonit]

Worn bar rails.

 

Cheers TGB Is there any way to check or is it a case of buy a new one and see as I have already dressed the bar and why do worn rails make the saw stick

Edited October 23, 2014 by Dazonit

[mixedangased]

Cheers TGB Is there any way to check or is it a case of buy a new one and see as I have already dressed the bar

 

Put a square across the rails and look for gap,

Or put some marker pen on the rails and use a bar dresser,when all the marker gone rails are level

Edited October 23, 2014 by mixedangased

[Dazonit]

Put a square across the rails and look for gap,

Or put some marker pen on the rails and use a bar dresser,when all the marker gone rails are level

 

Cheers mate I'll give it a go

[TGB]

Also check the groove's depth against manufacturer's quoted limits. But dress the bar first. If it's less than minimum, it's time for a new bar.

[Stubby]

Also check the groove's depth against manufacturer's quoted limits. But dress the bar first. If it's less than minimum, it's time for a new bar.

 

And round we come again to 3rd post in !

[TGB]

And round we come again to 3rd post in !

Sorry. Didn't mean to reiterate what had already been said by your good self. But pointing the OPer to them having to actually measure depth of groove, after having first dressed the bar.

Edited October 25, 2014 by TGB

[Stubby]

Sorry. Didn't mean to reiterate what had already been said by your good self. But pointing the OPer to them having to actually measure depth of groove, after having first dressed the bar.

 

Only having a larf bud ! No harm meant

[spudulike]

Having the same sort of problem with my stihl 024 it bogs down/sticks with very little pressure on it thought it may be the clutch so put a new one in still the same now thinking it might be the sprocket /clutch cover (don't know its name) that is worn or reading the above might need a new bar I dressed the bar after reading the above but still the same any ideas cheers

 

To me, this sounds like lack of power otput or a slipping clutch - power output being the most likely.

 

It sounds, from your description, that your saw is revving and idling OK but when you go to cut wood, the saw slows and boggs in the cut.

 

If you have bar/chain issues, you usually get the saw revving its nuts off but very little cutting action - a bit different from bogging in the cut.

 

My advice is to ensure your saw has compression, check the piston through the exhaust port (should be smooth with no vertical scores). If this looks good then check the fuel system. It is likely you have a partial blockage - probably the internal gauze strainer under the single screw cover.

 

A sliping clutch would cause the revs to continue or soar as the chain slows in the cut and possible excess heat/smoke from the clutch side. A worn sprocket will cause rough chain rotation but shouldn't cause this issue.

 

Engine wear/partial seizure/ fuel/ bad spark plug are most likely IMO!