is a staple in the Chinese power sports industry, primarily known as a parallel twin-cylinder clone of the classic Honda Rebel 250 (CMX250)

Benefits of the 253FMM Service Manual

Service Manual Feature: The 253FMM Maintenance & Overhaul Guide

Step 3: Cylinder Head Nut Sequence

The 253FMM has 4 or 6 head nuts. The manual contains a criss-cross loosening sequence. Loosen them in the reverse order of tightening. Failure to follow this warps the head. The tightening torque is usually 32-38 Nm.