TOHATSU MFS 25D Service Manual page 190

Power Unit
Remove the cylinder head cover 5.
9.
10. Remove the cylinder head bolts in the order shown in the
diagram, and remove the cylinder head assy.
Do not scratch or damage the mating
surfaces of the cylinder head and cylinder
block.
The water jacket insert is on the port side of the
3rd cylinder. Note that it is easy to fall off.
15) Disassembly of Cylinder Head Assy
1. Loosen the rocker arm lock nuts, and loosen the adjusting
screws as much as possible.
Remove the oil pump assembly 1.
2.
Remove the rocker arm shaft 2, rocker arm 3, collars 4,
3.
springs 5, washers 6, and lifter 7.
Pull out while pressing down on other parts.
5-50
CAUTION
4st 25/30 2022