Crankshaft, power unit, two stroke piston engine, and hand-held power tool

A crankshaft for a crankcase scavenged two stroke piston engine,

• wherein the crankshaft is configured to rotate around a rotation axis during operation, and wherein the crankshaft comprises:
• a crankpin configured to move in a crank plane upon rotation of the crankshaft, and
• a first and a second counterweight arranged on either side of the crank plane,
• wherein the first counterweight has a first outer radius measured from the rotation axis and the second counterweight has a second outer radius measured from the rotation axis,
• wherein the first outer radius is smaller than the second outer radius, and
• wherein the second counterweight comprises a recess at a radially outer portion thereof, and wherein the recess extends in a first angular sector of the second counterweight measured from the rotation axis,
• wherein the second counterweight comprises an axial end portion facing away from the crank plane, and wherein the recess is provided at the axial end portion of the second counterweight.

A crankshaft for a crankcase scavenged two stroke piston engine,

• wherein the crankshaft is configured to rotate around a rotation axis during operation, and wherein the crankshaft comprises:
• a crankpin configured to move in a crank plane upon rotation of the crankshaft, and
• a first and a second counterweight arranged on either side of the crank plane,
• wherein the second counterweight comprises a recess at a radially outer portion thereof, and wherein the recess extends in a first angular sector of the second counterweight measured from the rotation axis, wherein the first angular sector is smaller than a total angular sector occupied by the second counterweight measured from the rotation axis.