TOHATSU MFS 25D Service Manual page 201

26) Installation of Camshaft
1. Apply 4-stroke engine oil onto the outer circumference
of the new oil seal 1 and install the camshaft with the oil
attachment 2.
Oil Seal Attachment 2:
P/N. 3AC-99820-0
Apply cold-resistant grease to the lip of the oil
seal before installing the camshaft.
2. Apply a sufficient amount of 4-stroke engine oil to the cam
ridges, lifters, and journals of the camshaft 3 and install
it to the cylinder head from the direction shown in the
diagram.
Do not apply 4-stroke engine oil to the driven
pulley installation area a.
27) Installation of Rocker Arm Shaft
1. Apply a sufficient amount of 4-stroke engine oil to the
cam ridges of the camshaft and the outer circumferential
surface of the rocker arm shaft.
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