off road motorcycle spontaneous combustion has three main reasons:

One is the gasoline leak, the event could spark ignition spontaneous combustion;

Two motorcycle-car line remodel cause poor contact line. Especially when the battery is bad joints, easy to produce sparks ignite.

Third, improper parking position at a relatively high temperature in a closed environment, plus motorcycle oil spills, but also prone to spontaneous combustion motorcycle on fire. Motorcycle users usually have to check whether the aging pipes, joints are tight, there is no leakage carburetor place.