LOWR Lower unit6-31 69J3D11NOTE:Tighten the universal puller or center boltwhile turning the drive shaft until the driveshaft can no longer be turned.4. Install the backlash indicator onto thedrive shaft (22.4 mm [0.88 in] in diame-ter), then the dial gauge onto the lowerunit.5. Set the lower unit upside down.NOTE:Install the dial gauge so that the plunger acontacts the mark b on the backlash indica-tor.6. Slowly turn the drive shaft clockwise andcounterclockwise and measure the back-lash when the drive shaft stops in eachdirection.7. Add or remove shim(s) if out of specifica-tion.M: Measurement8. Remove the special service tools fromthe propeller shaft.9. Apply a load to the reverse gear byinstalling the propeller 8, the spacer 9(without the washer 0), then the washerA as shown.Bearing housing puller claw L 1:90890-06502Stopper guide plate 2: 90890-06501Center bolt 3: 90890-06504ÉÉBacklash indicator 4: 90890-06706Magnet base plate 5: 90890-07003Dial gauge set 6: 90890-01252Magnet base 7: 90890-06705Forward gear backlash:0.21–0.44 mm (0.008–0.017 in)Forward gearbacklash Shim thicknessLess than0.21 mm (0.008 in)To be decreased by(0.33 – M) × 0.71More than0.44 mm (0.017 in)To be increased by(M – 0.33) × 0.71Available shim thicknesses:0.10, 0.12, 0.15, 0.18, 0.30, 0.40, and0.50 mm
