An older leaf blower (brown & tan Ryan model) was disassembled for
Here are some pictures showing typical construction of the small 2-stroke weed eater & leaf blower motors.
Single sided crankshaft & counter balance
Single ring on the piston
Steel laminated counterbalance
Note the connecting rod - two stamped steel plates fused together
Caged roller bearings at each end (I assume the top end is) of the con-rod
Piston ring is siezed allowing for a decent amount of blow-by