GEN
INFO
General information
1-25
69J3D11
Stationary condition
When the PTT switch is not pressed, the gear pump will not pump the fluid, the up-main valve and
the down-main valve will remain closed, and the PTT unit in the system remains constant. This will
allow the tilt ram and the trim ram to maintain their positions until the PTT fluid flows through the
system again.
When the outboard hits something in the water
If the lower casing comes in contact with an obstacle while the boat is in operation, a sudden exten-
sion force becomes applied to the tilt ram. This force causes the fluid pressure in the tilt cylinder
upper chamber to increase, and the tilt piston absorber to open and release the fluid pressure into
the space between the tilt piston and the free piston. As a result, the dampening effect of the tilt pis-
ton absorber and the oil lock mechanism prevent the PTT unit from damage, before the tilt piston
comes in contact with the top of the tilt cylinder.
After the collision, a force to return the outboard motor to its original position is generated due to the
weight of the outboard and the thrust of the propeller.
The PTT fluid passes through the shock return valve of the tilt piston, via the free piston, and into
the tilt cylinder upper chamber.
When the tilt piston comes in contact with the free piston, the tilt piston stops.
1
Tilt ram
2
Tilt cylinder
3
Tilt piston absorber
4
Tilt piston
5
Shock return valve
6
Free piston
S69J1450
Содержание F225A
Страница 1: ...SERVICE MANUAL 290435 69J 28197 3D 11 F225A FL225A ...
Страница 73: ...69J3D11 3 20 1 2 3 4 5 6 7 8 9 Lubrication 1 Apply water resistant grease to the areas shown General ...
Страница 78: ...FUEL Fuel system 4 3 69J3D11 Intake silencer fuel filter and fuel pump 4 ...
Страница 80: ...FUEL Fuel system 4 5 69J3D11 Vapor separator 4 ...
Страница 84: ...FUEL Fuel system 4 9 69J3D11 Intake manifold and high pressure fuel line 4 ...
Страница 86: ...FUEL Fuel system 4 11 69J3D11 ...
Страница 88: ...FUEL Fuel system 4 13 69J3D11 Throttle control 4 ...
Страница 100: ...POWR Power unit 5 3 69J3D11 Power unit 5 ...
Страница 102: ...POWR Power unit 5 5 69J3D11 ...
Страница 104: ...POWR Power unit 5 7 69J3D11 ...
Страница 108: ...POWR Power unit 5 11 69J3D11 ...
Страница 126: ...POWR Power unit 5 29 69J3D11 Cylinder head 5 ...
Страница 128: ...POWR Power unit 5 31 69J3D11 ...
Страница 140: ...POWR Power unit 5 43 69J3D11 Cylinder block 5 ...
Страница 142: ...POWR Power unit 5 45 69J3D11 ...
Страница 166: ...LOWR Lower unit 6 5 69J3D11 Lower unit regular rotation model 6 ...
Страница 172: ...LOWR Lower unit 6 11 69J3D11 Propeller shaft housing regular rotation model 6 ...
Страница 178: ...LOWR Lower unit 6 17 69J3D11 Drive shaft and lower case regular rotation model 6 ...
Страница 194: ...LOWR Lower unit 6 33 69J3D11 Lower unit counter rotation model 6 ...
Страница 200: ...LOWR Lower unit 6 39 69J3D11 Propeller shaft housing counter rotation model 6 ...
Страница 206: ...LOWR Lower unit 6 45 69J3D11 Drive shaft and lower case counter rotation model 6 ...
Страница 227: ...69J3D11 7 2 1 2 3 4 5 6 7 8 9 MEMO Special service tools ...
Страница 228: ...BRKT Bracket unit 7 3 69J3D11 Bottom cowling 7 ...
Страница 230: ...BRKT Bracket unit 7 5 69J3D11 ...
Страница 232: ...BRKT Bracket unit 7 7 69J3D11 Upper case steering arm swivel bracket and clamp brackets 7 ...
Страница 234: ...BRKT Bracket unit 7 9 69J3D11 ...
Страница 236: ...BRKT Bracket unit 7 11 69J3D11 ...
Страница 246: ...BRKT Bracket unit 7 21 69J3D11 Power trim and tilt unit 7 ...
Страница 248: ...BRKT Bracket unit 7 23 69J3D11 ...
Страница 250: ...BRKT Bracket unit 7 25 69J3D11 ...
Страница 292: ...ELEC Electrical systems 8 21 69J3D11 Starter motor 8 ...
Страница 367: ......
Страница 368: ...YAMAHA MOTOR CO LTD Printed in the Netherlands Jun 2001 1 3 1 CR F225AET FL225AET E ...