TOHATSU BFT115A Service Manual page 435

CYLINDER HEAD
Using an appropriate tool (1), lightly tap the end of each
valve stem (2) two or three times with a plastic hammer
to ensure proper seating of the valve and valve
keepers.
(2)
• Tap the valve stem only along its axis so you do not
bend the stem.
Install the cylinder head (page 14-37).
(1)
14-43