The Wenatchee World reports the crash happened Tuesday afternoon after a brief rainstorm.
Joe Ells and Nathan Goforth were nearby and ran to the crash site. Ells says the helicopter landed upside down.
The injured men were taken to a hospital. No information on their condition was immediately available.
Firefighters called utility crews to service the damaged 100,000-volt power line.
Helicopters are routinely called in the blow moisture off cherries after a rainstorm to keep the cherries from splitting open.