Backlash (Counter Rotation Model); Counter Rotation Model - Yamaha Z300A Supplementary Service Manual

NOTE:
"P" is the deviation of the lower case dimen-
sion from standard. The "P" mark a is
stamped on the trim tab mounting surface of
the lower case in 0.01 mm units. If the "P"
mark is unreadable, assume that "P" is zero
and check the backlash when the unit is
assembled.
Calculation formula:
Pinion shim thickness (T3) =
82.00 + P/100 – M3 – M4
Example:
If "M3" is 50.75 mm and "M4" is 30.52 mm
and "P" is (–5), then
T3 = 82.00 + (–5)/100 – 50.75 – 30.52 mm
= 82.00 – 0.05 – 50.75 – 30.52 mm
= 0.68 mm
6. Select the pinion shim(s) (T3) as follows.
Calculated numeral
at 1/100 place
1, 2
3, 4, 5
6, 7, 8
9, 10
Available shim thicknesses:
0.10, 0.12, 0.15, 0.18, 0.30, 0.40, and
0.50 mm
Example:
If "T3" is 0.68 mm, then the pinion shim is
0.65 mm.
If "T3" is 0.70 mm, then the pinion shim is
0.68 mm.
6D03F1X
Shimming (counter rotation model) / Backlash (counter rotation model)
Rounded numeral
0
2
5
8
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.
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
drive shaft (22.4 mm [0.88 in] in diame-
ter), then the dial gauge onto the lower
unit.
6
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