7-44
Cylinder head
2.
Cut the surface of the valve seat using a
45° cutter by turning the cutter clockwise
until the valve seat face has become
smooth.
Do not overcut the valve seat. To prevent
chatter marks, make sure to turn the cut-
ter evenly using a downward force of
40–50 N (4.0–5.0 kgf, 8.8–11.0 lbf).
a. Slag or rough surface
3.
Adjust the top edge of the valve seat con-
tact width using a 30° cutter.
a. Previous contact width
4.
Adjust the bottom edge of the valve seat
contact width using a 60° cutter.
a. Previous contact width
5.
Adjust the valve seat contact width to
specification using a 45° cutter.
a. Previous contact width
b. Specified contact width
6.
Check the valve seat contact area of the
valve. See “Checking the valve seat” (7-
43).
Valve seat cutter holder: 90890-06316
Intake:
Valve seat cutter 30°: 90890-06327
Valve seat cutter 45°: 90890-06325
Valve seat cutter 60°: 90890-06324
Exhaust:
Valve seat cutter 30°: 90890-06326
Valve seat cutter 45°: 90890-06325
Valve seat cutter 60°: 90890-06324
60
45
30
a
45
˚
30˚
a
60
˚
a
45˚
a
b
Содержание F150A
Страница 1: ...SERVICE MANUAL 63P 28197 3P 12 F150A FL150A F150B FL150B ...
Страница 4: ......
Страница 48: ...2 3 Electronic control system Engine ECM component 2 3 4 6 5 1 8 7 10 9 11 12 14 15 16 13 17 ...
Страница 110: ...3 41 Propeller selection MEMO ...
Страница 129: ...4 18 Outboard motor troubleshooting MEMO ...
Страница 175: ...5 44 PTT system 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Страница 247: ...7 22 Starter motor Terminal nut 3 9 N m 0 9 kgf m 6 6 ft lb ...
Страница 385: ...8 78 Shimming counter rotation model 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Страница 434: ...9 47 PTT cylinder Cylinder end screw wrench 2 90890 06591 Tilt cylinder end screw 1 150 N m 15 0 kgf m 110 6 ft lb 1 2 ...
Страница 449: ...9 62 PTT gear pump 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Страница 474: ...i 8 Index 0 1 2 3 5 6 7 8 9 10 10 A MEMO ...
Страница 475: ......
Страница 476: ...Oct 2011 2 ABE E ...