It depends on what kind of pistol and what kind of malfuction.
It depends on the type of "jam". Is it a double feed?
Open the link below and read the section on (REPAIR/SERVICE)
You will need a .177 caliber cleaning rod to push the pellet back into the loading breech from the barrel.
Try to cock it while pushing a cleaning rod down the barrell
Crosman still services this pistol it is best to contact them and tell them what you need, their address is: Crosman Corporation7629 Routes 5 & 20East Bloomfield, NY 144431-800-7AIRGUN (724-7486)
on top of the gun is a little slide panel which should hep unjam -j.p
it's impossible
a long freaking time. it won't unjam until you no longer participate in physical activity
The best way to go about it is to remove the floor plate, then take out the spring and follower. If you're having misfeeds with that magazine, the most likely culprit would be either the follower, spring, or perhaps both, and it may be necessary to replace them.
take it to a gunsmith
Reverse the way you jammed it
You take it to a gunsmith