1984 Official Honda TRX200 Shop Manual, Page 69Get this manual
c:iif HONDA CYLINDER HEADVALVES VALVE GUIDE REPLACEMENT
Support the cylinder head and drive out the guide from the valve port side with valve guide removerNOTEWhen driving out the guide, be careful not to damage the headVALVE GUIDE REMOVER 07742-0010100 OR 079423290100 ,
Install an Oring on the new valve guide Drive in the gu ide from the top of the headNOTE :
VALVE GUIDE REMOVER 07742-0010100 OR 07942-3290100