Stihl HT 75 chain not oiling.

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There appears to be a non return valve between the reservoir and chain case, have cleared it but still no oil. It doesn't appear to have a pump, at least if it does I can't see it.

Can anyone help?

Thanks. Peter.
 
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If there is a tiny gear driven pump there, they always block......try running some light oil / paraffin mix through the machine and they usually clear after a while.
John :)
 
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Thanks for the video, normally the first place I look - getting old!

Hi John, thought I might see you, hope you are well and thanks for the info.

Peter
 
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That video was the right one John, only judging by the repairers hands it probably had more sawdust in it when he finished than when he started.:unsure:

Yes that's the pump on your link. The removal instructions on the video were very useful

Peter
 
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Never had a problem with my ordinary Stihl but this one has a different system. I've got the pump out now and it is indeed clogged with sawdust.

Peter
 
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Fixed the oiler but still have a problem. The chain was supposed to be new and it looks it but it only cuts halfway through a branch then smokes trying to cut through the second half and does very little cutting, in fact I have had it stuck in the tree two or three times. I have cut down from the top but about halfway through the branch splits and jams the the chain.

I have an ordinary 12" Stihl saw which I have used for many years, don't have any trouble with that. I have tried sharpening the blade but it doesn't seem to make any difference, I'm using a 5/32" file, 4mm? that sharpens the other saw fine - what am I doing wrong.:(

Peter
 
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7D9DDDEF-7383-41CD-9966-71199CEE7C60.jpeg If the bar jams as the branch splits try cutting away from the trunk as in the lower sketch.
 
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Can I suggest you buy a quality Oregon or War-Tec chain from GHS or similar Peter? Your file should put a keen edge on the chain so something isn’t right.
John :)
 
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Could be that John but I have had all sorts of chains before and not had a problem. The chain looks and feels sharp although it looks different to the chain on my other 12" saw. I wondered if it needs a smaller file, the one I use for the other saw is a bit of a tight fit but I found a couple of thinner ones today so will try that.

The strange thing is it cuts through the first half of a branch OK but seems to object to cutting it all the way through.

Peter
 
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That's curious Peter - unless you have a Powersharp or low profile chain I reckon they are very similar.
Personally I don't find using a slightly larger file makes any difference to the cutting edge - but of course you can't go back to the smaller one!
Is the chain matched to your bar?
Regards
John :)
 
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Well it fits John, otherwise I don't know. I think it said something about a 'pico' chain.

Peter
 
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Picco chain, as far as I know, is favoured by chainsaw carving people....I can't say I've ever had the pleasure!
No experience with this one, I'm afraid.
John :)
 

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