Yamaha F400A 2022 - Page 571

A-8
Model F450A/XF450 FL450A/XF450 F400A/XF400 FL400A/XF400
Reverse shims
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50 mm
—
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50 mm
—
Propeller shaft shims
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50/1.00 mm
—
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50/1.00 mm
—
Propeller shaft
Motive torque
0.4–1.0 N·m
(0.04–0.10
kgf·m, 0.3–0.7
lb·ft)
—
0.4–1.0 N·m
(0.04–0.10
kgf·m, 0.3–0.7
lb·ft)
—
Runout
0.02 mm
(0.0008 in)
—
0.02 mm
(0.0008 in)
—
Drive shaft
Motive torque
0.3–3.0 N·m
(0.03–0.31
kgf·m, 0.2–2.2
lb·ft)
—
0.3–3.0 N·m
(0.03–
0.31 kgf·m, 0.2–
2.2 lb·ft)
—
Runout
1.0 mm
(0.039 in)
—
1.0 mm
(0.039 in)
—
* Figures obtained using the special service tools.
Lower unit assembly (counter rotation model)
Lower unit
Holding pressure —
68.6 kPa
(0.69 kgf/cm²,
9.9 psi)
—
68.6 kPa
(0.69 kgf/cm²,
9.9 psi)
Gear backlash
Forward gear backlash —
0.20–0.61 mm
(0.0079–
0.0240 in)
—
0.20–0.61 mm
(0.0079–
0.0240 in)
Reverse gear backlash —
0.40–0.81 mm
(0.0157–
0.0319 in)
—
0.40–0.81 mm
(0.0157–
0.0319 in)
Available shim thicknesses
Pinion shims —
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50 mm
—
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50 mm
Forward shims —
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50 mm
—
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50 mm
Reverse shims —
2.00/2.03/2.06/
2.09/2.12/2.15/
2.18/2.21 mm
—
2.00/2.03/2.06/
2.09/2.12/2.15/
2.18/2.21 mm
Model F450A/XF450 FL450A/XF450 F400A/XF400 FL400A/XF400
Propeller shaft shims —
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50 mm
—
0.10/0.12/0.15/
0.18/0.30/0.40/
0.50 mm
Propeller shaft
Free play —
0.42–0.52 mm
(0.0165–
0.0205 in)
—
0.42–0.52 mm
(0.0165–
0.0205 in)
Runout —
0.02 mm
(0.0008 in)
—
0.02 mm
(0.0008 in)
Drive shaft
Motive torque —
0.3–3.0 N·m
(0.03–0.31
kgf·m, 0.2–2.2
lb·ft)
—
0.3–3.0 N·m
(0.03–0.31
kgf·m, 0.2–2.2
lb·ft)
Runout —
1.0 mm
(0.039 in)
—
1.0 mm
(0.039 in)
* Figures obtained using the special service tools.
Bracket unit technical data
PTT system
Hydraulic pressure
Up 15.00 Mpa (150.0 kgf/cm², 2175.0 psi)
Down 7.70 Mpa (77.0 kgf/cm², 1116.5 psi)
Electric current
Up 69–93 A
Down 43–59 A
Motor
Standard commutator
diameter
28.00 mm (1.1024 in)
Wear limit 27.00 mm (1.0630 in)
Standard commutator
undercut
1.00 mm (0.0394 in)
Wear limit 0.50 mm (0.0197 in)
Standard brush length 12.00 mm (0.4724 in)
Wear limit 4.3 mm (0.17 in)