1984 Official Honda TRX200 Shop Manual, Page 73Get this manual
CYLINDER HEADVAL VES VALVE SPRING COMPRESSOR 07757-0010000 OR 07957-3290001
Install the valve spring retainers and insta ll the valve cottersCAUTION :
To prevent loss uf tension, do nor compress the valve spring more than necessary
Tap the valve stems gently with plastic hammer to firmly seat the cottersCAUTION ;