Originally Posted by LCR
I know this is old and I think I read everything and have questions
When you say you pulled the jug you mean the fuel tank?
And what ports on the intake are you talking about? on the face of the block or actually inside the intake path?
I only have a PB770 motor sitting around right now and there is only one port when you take the intake off you mention ports plural so not sure if there are multiple on the 266 motor
The piston cylinder is commonly called the jug--when removed, the piston and rings are then out of the cylinder, connected to the rod and crankshaft.
The ports I referred to are probably more properly the transfer ports. Since the small 2-stroke engines do not have valves, they must have some way for fuel/air mix to get into the cylinder. This is accomplished by a transfer port. These transfer ports differ in design for various brands, but accomplish the same thing--allowing fuel into cylinder as the piston goes down. They are the passage way from the crankcase to the cylinder.
The Echo 266 has 2 of these transfer ports (small holes about the size of a Q-tip swab) on each side of the cylinder. These holes were at least 50% plugged, restricting the fuel that could enter the cylinder--essentially the same as holding the throttle half open.
Hope this answers your questions.