TOHATSU NB-1000 Service Manual page 168

SECTION 6
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12. Remove the pump case bolts (16). Remove the pump
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case (17) and pump impeller (15).
13. Install a water pump repair kit if gearcase has been in service
for any length of time. See Water Pump, this section.
14. Remove the cam (19) and cam rod. Pull them up together
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with the lower pump case (20).
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15. Remove bevel gear B (21) and bevel gear A (22).
6-16
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T1720
9
T1721
T2043
1-/ 2-Cylinder