HOMELITE MODEL XL-925 CHAINSAWS FOR PARTS . THIS IS WHATS LEFT . NOT COMPLETE MISSING PARTS WHAT YOU SEE IS ALL I HAVE.PISTON LOOKS GOOD LOOKING AT EXHAUST PORT. CRANK IS FREE BUT WHEN THE PISTON COMES UP TO THE TOP OF THE CYLINDER IT STOPS BOTH WAY . WILL NOT MAKE A COMPLETE REVOLUTION .SAW IS VERY DIRTY AND HAS BEEN SITTING FOR SEVERAL YEARS.  NO BAR AND CHAIN