Try putting it in gear and pulling the bike backwards hard. this will put the cam chain slack on the adjuster side and if it is close the adjuster will move to the next tooth.
How many miles on your bike Jim? There is a measurement to determine if you need a spacer washer added to increase the spring pressure of the adjuster.
It's a lot easier if you park with the bike facing up a slight incline then turn off the motor (of course) put the bike in 2nd gear and just let it roll back slowly and pop out the clutch, let the weight of the bike do the work