TOHATSU BFT 250A, Service Manual

Page: 489 / 639

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GEAR CASE (STANDARD ROTATION)
SHIM SELECTION
SHIM POSITION
• Use shims to adjust the position of each gear so that
they engage properly. Perform shim adjustment if
the backlash of a gear is outside the specification or
after replacing the gear case, vertical shaft, propeller
shaft, or bearing with a new one.
REVERSE BEVEL GEAR SHIM
S
p (
S
H
IM
TH
IC
KN
ES
S)
D
H
F
E
C: 214.5 ± 0.15 mm
B: 72.5 ± 0.15 mm
A: 2
23
.0 ±
0.
15
mm
Sf (SHIM THICKNESS)
St (SHIM THICKNESS)
Sr (SHIM THICKNESS)
FLANGE
FORWARD BEVEL GEAR
PROPELLER SHAFT THRUST SHIM
FORWARD BEVEL
GEAR SHIM
TAPER BEARING (60 x 100 x 30 mm)
GEAR CASE
BALL BEARING (55 x 100 x 21 mm)
REVERSE BEVEL GEAR
PINION GEAR
TAPER BEARING (32 x 66 x 49 mm)
VERTICAL SHAFT
PINION GEAR SHIM
PROPELLER SHAFT
INTERNAL
CIRCLIP