How do you replace a Johnson 140 outboard water pump?

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1249431

2026-07-18 13:50

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Sorry I couldn't post pictures but this should still help.

1. Remove both sides of the lower plastic housing of the motor (remove tilt switch during this time).

2. Tilt motor (Propeller up)

3. Mark the steering counter tab.

4. Remove steering counter tab to access seventh bolt seen at the left of the bottom left picture.

5. Remove seventh bolt.

6. Tilt motor (Propeller down) until the bottom is close to ground.

7. Remove the six remaining bolts from underneath and allow to drop just enough to access the rubber hose going into bottom.

8. Gently pry hose of plastic housing.

9. Support lower motor and tilt (propeller up) allow lower motor to slide down until both rods clear the motor.

10. Remove 4 water pump bolts.

11. Slide housing and impeller up the shaft.

12. Gently pry metal tab from shaft with screw driver

13. Remove bottom plate and the gasket underneath.

14. Clean and/or sand bottom.

15. Replace new gasket and bottom plate

16. Gently tap new metal tab into shaft

17. Push impeller into housing (note the groove in the middle).

18. Gently slide housing and impeller down shaft making sure to align the tab with impeller groove.

19. Evenly snug housing bolts.

20. Lightly grease shaft fittings.

21. Slide top of small shaft back into top of motor (be sure to center into fitting at top).

22. Place lower unit back under motor while aligning both shafts and tilt motor (propeller down) until you can reconnect hose.

23. Reconnect hose

24. Insert seven retaining bolts until the just catch by hand and tighten evenly with wrench.

25. Reinsert steering counter tab.

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