Chainsaw Repair

Ok I had nothing to do this eve so I took it apart.  These saws seem to have a few good qualities.  They are easy to start, they run nice and strong, and they are easy to take apart.
The design sucks, and here is why. The pump gear is not sealed in its own housing, and gets plastered with oil and dust. The clutch bearing are tiny needle bearings but to my delight after I dropped them, are in a plastic cage and dont fall out easy.

I found the pump gear intact, the oil line to the bar clear.  This automatic oiler is only a couple of simple parts, and off ebay they are pretty cheap.

The breather port is covered with a brass screen, it seems clean. I cant really see the in tank screen that well but I will clean all of these parts later and there is no reason it shouldnt oil, with some thinner oil.  It is probably the in tank screen or the breather as the pump shaft, gear, pinion and outlet are clear and not worn out.

The part that drives the pump gear is a metal coil wrapped around a plastic sleeve. Because an all metal oil pump system enclosed in a sealed case to keep it clean would have driven the retail price up by....oh jeeze maybe as much as $3.  which surely would have bankrupted husqvarna.
 

At least I know now, use thinner oil, and take the whole thing apart once a month to clean the built up crud out of it.

Amazing the quality they are willing to sacrifice to save a few pennies per unit in production costs.

But the pump itself is not bad or broken, and if it keeps plugging the breather up I can make a tube insert onto it and run a breather hose up out of the case and stick a filter on it where it can be maintained easier. As it is now you have to take the clutch off to get to the breather port.

Here's a pic of the oil pump system in desperate need of cleaning more, it was packed solid with oily sawdust.  A large chip or shaving in those gears will really make problems, I better go buy an extra pump assembly to keep on hand.