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Nose sprocket jamming


HeatherwoldGardener
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I have always greased husky nose sprockets. O:flute:nly ever had one seize this was last winter due to build of snow when cross cutting. Sounds like you may have oiling problems. Its worthwhile to wash out the oil tank. and make sure that the pump is discharging oil. what oil are you using and do you clean the muck out of the guide bar rail groves

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I have had a couple of Stihl bars jam up the nose wheel, sod to clear - just did it, first one quite a few times, no idea why.

 

If it has jammed look at the chain when you drop power it should run down, not stop - if it does stop as it it braked, then it jamming again.

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I always grease a brand new bar on PDI as I think it helps to 'run it in'.

 

They will otherwise get quite hot in the first few minutes before the chain oil gets around.

 

From then on I think the chain oil will lubricate it well enough, and after all those little grease guns are a pain.

 

As for the Stihl with no grease hole, I guess they may be assembled at factory with a good dose of grease for the initial start.

 

I can personally find no logic in the common thought of if you start greasing you have to keep greasing.

 

same here, its not like a bar gets hooked on a good greasing.

 

I have never greased a bar either and never had any trouble.

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Two week old Husky 450e with 18" bar. I grease the nose sprocket with red sprocket grease about every third or fourth fill of fuel and for the second time in two days, the bar nose sprocket is jammed solid after a couple of hours of work.

I have to strip the bar down and dig around the sprocket removing loads of crud before it starts spinning up again.

Never had any issues with my old Stihl (no grease hole so didn't need to grease up)

Was I wrong in following Husky's advice on greasing and shouldn't have bothered?

Or is there something I'm doing wrong here guys?

 

Are you using bio oil? if you are iv'e been told not to mix oils, don't no if it may be afecting grease

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I have never greased any bars but have had a few oregon ones seize up so I only buy Stihl when I can.

 

I think the problem with grease is it attracts crap so unless you purge it regularly you will have bearings surrounded by crap impregnated grease. Which isnt very good.

 

I assume the stihl bearings are designed to be cleaned and lubricated with bar oil.

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