The best way is to hose it down with WD-40 then drag a shoe lace thru it, with a knot tied on the end. More .22's are damaged by running a cleaning rod thru it causing excessive wear, more than shooting it would. If you must rod it, make sure to use a .17 cal plastic coated rod.
Daniel Tiger's Neighborhood - 2012 Clean Up Time Neighborhood Clean Up 1-22 was released on: USA: 22 April 2013
Clean Pastures was created on 1937-05-22.
Follow instructions in the owner's manual.
Ask a gunsmith for help
Clean House - 2003 Robinson Family 2-22 was released on: USA: 10 June 2004
Clean House - 2003 The Bunce Family 6-22 was released on: USA: 7 May 2008
Clean Sweep - 2003 Sewing the Seeds of Organization 2-22 was released on: USA: 2005
Clean Pastures - 1937 was released on: USA: 22 May 1937
Follow the instructions in the owner's manual.
With soap and water.
Go to Browning.com and request a owner's manual
Find a gunsmith and ask for a demonstration.