Installing The Water Pump

WATER PUMP

              Mechanical seal installer                             Impeller shaft tilt limit
               90890-04078                                           0.15 mm (0.006 in)
              Water pump seal installer
               YM-33221-A
              Middle driven shaft bearing driv-
              er
               90890-04058
              Bearing driver 40 mm
               YM-04058
              Yamaha bond No. 1215
               90890-85505
               (Three Bond No.1215®)

                                                           1. Straightedge
                                                           2. Impeller
                                                         5. Install:
                                                          • Impeller “1”
                                                           • Circlip New
                                                     NOTE:
                                                         After installation, check that the impeller shaft ro-
                                                         tates smoothly.
  A. Push down
  4. Mechanical seal installer
  5. Middle driven shaft bearing driver
3. Install:
  • Rubber damper “1” New
  • Rubber damper holder “2” New
NOTE:
Before installing the rubber damper, apply tap
water or coolant onto its outer surface.
                                                         EAS26580

                                                         INSTALLING THE WATER PUMP
                                                         1. Install:
                                                           • O-ring “1” New
                                                           • Water pump assembly “2”
                                                     NOTE:
                                                         • Align the slit “a” on the impeller shaft with the
                                                           projection “b” on the oil pump driven sprocket.
                                                         • Lubricate the O-ring with a thin coat of lithium
                                                           soap base grease.
4. Measure:
 • Impeller shaft tilt
   Out of specification → Repeat steps (3) and
   (4).
ECA14090

CAUTION:
Make sure the rubber damper and rubber
damper holder are flush with the impeller.

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                                                       WATER PUMP

2. Fill:
 • Cooling system
   (with the specified amount of the recom-
   mended coolant)
   Refer to “CHANGING THE COOLANT” on
   page 3-25.
3. Check:
 • Cooling system
   Leaks → Repair or replace any faulty part.
4. Measure:
 • Radiator cap opening pressure
   Below the specified pressure → Replace the
   radiator cap.
   Refer to “CHECKING THE RADIATOR” on
   page 6-3.

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