MX | ROADRACE | KARTING | MOPED
Here we explain some important notes for mounting a VHM piston with special Z-clips.
Small slotted (flat) screwdriver to mount the Z-clips.
First notice the small hole in the pick lock groove. That's were the bended end of the clip must be mounted.
The straight end of the clip must end in the pick lock groove! There are two possible positions of the clip hole.
Position 1: clip hole is on the underside of the clip groove. Then the special Z-clip must be mounted as depicted below.
Position 2: clip hole is on the right side of the clip groove. Then the clip must be mounted like on the image below.
An instruction image for a particular piston can be found on the assembly list of the piston, which is always included in the piston box.
First remove the clips from the piston, using a small slotted srewdriver (flat-head). Then remove the piston pin and piston. Take a new piston and slide the piston pin through. Then correctly mount the circlips on both sides in the grooves.
Use a little bit of oil to grease the piston skirt before mounting the cylinder and cylinder head.