Hello,
this is one for the EMAB-Partner experts.
I have a Partner 385 AV on my bench which puzzles me.
The P385 is as we all know, derived from the Poulan Micro 25 with a few
differences, e.g. different piston pin eye, different carb but basicly it still
is very much a Poulan micro 25.
Chain lubrication on the micro 25 works by building up overpressure inside the oil tank
forcing the chain oil being pressed through the "oil pump" into the bar mouunt's notch.
Because of this working priciple the oil tank doesn't have a vent.
All of my micro 25 based saws (even another EMAB-Partner) are built alike.
Not the current one:
On the upper side of the oil tank (normally covered by the air filter housing) there is a tiny bore and in it
a bent steel wire. The bore doesn't look like being applied belated and the bending of the wire looks machine done.
You can pull the wire about 7 mm outward but not further so there must be a bending at the inside end of it too.
The wire can freely be rotated 360°. It just looks like a factory installed oil tank vent!
But how is the lubrication supposed to work when no no overpressure can build up inside the oil tank?
Just for completeness: The clutch side of the saw looks absolutely normal: Check valve (tested working) in place and the
"oil pump" on the bottom below the bar tensioner.
Any clues anyone?