Engine Repair Videos

These Engine Repair video tutorials have been checked over by our Thumpstar mechanics. Click here to view more video tutorials on our youtube channel.

How to adjust your tappets

In this how to video, we are showing you the process for correctly adjusting the engine tappets.

How To Set Cam Timing

Step by step guide in how to set the cam timing for horizontal engines.


Guide in replacing the stator plate on a 110cc pit bike

Gear leaver, YX, GPX, Zongshen

Information on different kinds of Gear Leavers with measurements.

Engines, Zongshen, Lifan, YX, GPX Information

Information on different kinds of engines including Zongshen, YX, GPX, Lifan

Kick Start Information

Information on Kick Starts.