2007-2009 Honda TRX300EX TRX300X service manual, Page 124Get this manual
CYLINDER HEADVALVE
CYLINDER HEAD DISASSEMBLY
Remove the cylinder head (page 7-13) Remove the valve spring cotters using the spring compressorcompress the valve TOOL:
To prevent loss of tension, do not springs more than necessary to remove the cotters
Valve spring compressor
07757-0010000
Mark all the parTs so they can be placed back in their original locations
Remove the following: spring retainer outer and inner valve springs valve stem seal spring seat