I hate to do it but I picked up a 661 and I don't need 2 90cc saws so the 660 is up for sale. I purchased this from a well known seller here and only put 5 tanks thru her. Saw runs great, oils well and is a great saw.
It does have a crack on the top cover and someone else used the chain catch a few times otherwise the saw is flawless.
$700 paypall friends and family or buyer pays fees. Buyer to pay actual shipping cost.
Pm me please, thanks Rye.