Backlash (Counter Rotation Model) - SELVA MARINE Blue Whale 250 EFI Service Manual

Shimming (counter rotation model) / Backlash (counter rotation model)
8. Measure the propeller shaft axial free
play. Reselect the propeller shaft shim(s)
(T'4), if out of specification.
Propeller shaft free play:
0.25–0.35 mm (0.0098–0.0138 in)
Magnet base B 0: 90890-06844
Dial gauge set A: 90890-01252
Backlash
(counter rotation model)
Measuring the forward and reverse
gear backlash
1. Remove the water pump assembly.
2. Set the gear shift to the neutral position
at the lower unit.
Shift rod push arm: 90890-06052
3. Install the special service tools so that it
pushes against the propeller shaft.
6P23H11
NOTE:
Tighten the center bolt while turning the drive
shaft until the drive shaft can no longer be
turned.
Bearing housing puller claw L 1:
90890-06502
Stopper guide plate 2: 90890-06501
Center bolt 3: 90890-06504
4. Install the backlash indicator onto the
6
drive shaft (22.4 mm [0.88 in] in diame-
ter), and then install the dial gauge.
NOTE:
Install the dial gauge so that the plunger a
contacts the mark b on the backlash indica-
tor.
Backlash indicator 4: 90890-06706
Magnet base plate 5: 90890-07003
Dial gauge set 6: 90890-01252
Magnet base B 7: 90890-06844
1
2
3
4
5
6
7
8
9
6-60