Suzuki DF15 - Power Unit; Cylinder Head

24 DF9.9T/TH/DF15 (Serial No. 110001 and later)
POWER UNIT
CYLINDER HEAD
The thread diameter of the spark plug hole on the cylinder head
has been changed from 14 mm to 10 mm.
NOTE:
Interchangeability:
The new cylinder head can be installed on the early model with
the new cylinder head, spark plug and spark plug cap used
together as a set.