Yamaha F25 [246/444] Shimming for usa and canada

6-20

LOWR

SHIMMING (FOR USA AND CANADA)

2. Install:

● Shimming gauge

● Drive shaft

● Drive shaft bearing 1

● Pinion gear shim(s) 2

NOTE:

● Attach the adaptor plate to the gauge

base with four bolts of the appropriate

size.

● Connect the shimming gauge to the drive

shaft so that the drive shaft is centered in

the gauge’s hole.

● If the original shim(s) is unavailable, start

with a 1.5 mm shim.

Gauge block 3:

YB-34432-16

Adaptor plate 4:

YB-34432-10

Gauge base 5:

YB-34432-11

3. Install:

● Pinion gear

● Pinion gear nut

4. Measure:

● Specified measurement (M)

Out of specification → Adjust.

NOTE:

● Measure the clearance between the shim-

ming gauge and the pinion gear as

shown.

● Perform the same measurement at three

points on the pinion gear.

● Find the average of the measurements (M).

Pinion gear nut:

50 Nm (5.0 m • kg, 36 ft • lb)