2006 Arctic Cat DVX 400 Service Manual, Page 45Get this manual
NOTE: Place clean rag over the cylinder to prevent the piston-pin circlip from dropping into the crankcase 9Using an awl, remove one piston-pin circlip10Push out the piston pin; then remove the pistonAccount for the second piston-pin circlip
7Remove the cam chain guide (3); then remove the remaining two nuts (4) securing the cylinder to the crankcase
AT THIS POINT
To service center crankcase components only, proceed to Separating Crankcase Halves
8Lift the cylinder off the crankcase taking care not to allow the piston to drop against the crankcaseAccount for the gasket and two alignment pins