Chainsaw Repair

Meteor makes a nice windowed piston for the closed port 266SE/268XP saws.  They also make a non-windowed piston for the open port saws (such as late 268).  Their terminology is somewhat misleading however.  I've seen where they call the non-windowed piston (which should be used in the open port cylinders) a "closed port" piston.  Also seen where they've called the windowed piston (that should be used in a closed port 266SE/XP or 268XP) an "open port" or "open" piston. 

Various sellers (on ebay and elsewhere) further the confusion with their descriptions of the Meteor pistons.  I have seen the non-windowed piston described as "for closed port cylinders" (which it is NOT the right choice for), and have seen the windowed pistons described as "for open port cylinders" (which it is a poor choice for).  Thankfully, they often will show a picture of the piston that they're selling...............so you can still make an informed decision.  If you have a closed port 266/268 jug then buy the slug that looks like a 272XP piston....