Inspection Of Water Pump; Inspection Of Water Pipe - TOHATSU MFS 25D Service Manual

Remove the cam rod 0.
4.

5) Inspection of Water Pump

Check the pump case liner 1 and guide plate 2 for
1.
deformation and wear.
Replace if necessary.
Check the pump impeller 3 for cracks, damage, and
2.
wear.
Replace if necessary.
• The impeller may have glossy or melted areas if
rotated with insufficient water.
• E v e n i f t h e i m p e l l e r s h o w s n o s u r f a c e
abnormality, the impeller rubber may be
separated from the impeller center hub.
• If the guide plate has a groove of 0.5 mm or
greater due to wear by the impeller, replace it.
Check the impeller key 4 and key groove for wear.
3.
Replace if necessary.

6) Inspection of Water Pipe

Remove the water pipe 1 from the drive shaft housing.
1.
Refer to "Disassembly of Drive Shaft" in Chapter 7.
2. Check the water pipe 1 for corrosion, deformation, and
clogging.
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