GEN
INFO
General information
1-21
62Y3A11
Acceleration control
This control is activated when the throttle valve is opened suddenly. If the engine speed increases
more than the specified figures, the control of the ignition timing transfers to the acceleration map.
Thereafter, the control of the ignition timing transfers gradually to the control map before accelera-
tion. If it was under warm-up control, the timing transfers to the warm-up control map, and if it was
under normal control, the timing transfers to the normal control map. The control described above
will be repeated if the engine is accelerated again.
Over-revolution control
This control operates by detecting the engine speed. If the engine speed increases to over 6,200
r/min, the ignition of cylinders #1 and #4 is stopped in order to regulate the speed. If the engine
speed increases further to over 6,300 r/min, the ignition of cylinders #2 and #3 is also stopped. This
control will not be deactivated until the engine speed drops below 6,200 r/min.
Overheating control
This control operates in accordance with the engine temperature, which is detected by the signal
that is input from the thermoswitch. When the microcomputer detects via the thermoswitch signal
that the engine temperature has increased to over 80 °C (176 °F), it outputs a signal to stop the igni-
tion of cylinders #1 and #4, if the engine speed is over 2,000 r/min. At the same time, the microcom-
puter issues a warning by operating the warning lamp and the warning buzzer. When the
overheating control is activated, it will not be deactivated until the engine is stopped or the engine
temperature decreases to under 70 °C (158 °F).
The determination of overheating stops when the engine is stopped. However, until the engine tem-
perature decreases to approximately 70 °C (158 °F) or below, the overheating control will be acti-
vated upon restarting the engine. Upon restarting, if the engine speed is under 2,000 r/min, the
overheating control will not be activated for 75 seconds. However, if the engine is operated at over
2,000 r/min for more than 25 seconds, the overheating control will be activated.
Oil pressure control
The oil pressure control operates in accordance with the signals from the oil pressure switch. The oil
pressure is determined to have dropped if the engine continues to operate at over 2,000 r/min with
an oil pressure of under 49 kPa (0.49 kgf/cm
2
, 6.97 psi) for more than one second. When the oil
pressure control is activated, the warning buzzer sounds and the warning lamp illuminates. If the
engine speed is over 2,000 r/min, the control stops the ignition of cylinders #1 and #4 so that the
engine speed will not increase to over 2,000 r/min. Once an oil pressure drop is determined, this
control will not be deactivated even if the oil pressure recuperates, until the engine is stopped.
Summary of Contents for FT50C
Page 1: ...SERVICE MANUAL 62Y 28197 3A 11 290408 F50A FT50B FT50C ...
Page 4: ......
Page 42: ...GEN INFO General information 1 37 62Y3A11 MEMO ...
Page 62: ...SPEC Specifications 2 19 62Y3A11 Dimensions Exterior ...
Page 64: ...SPEC Specifications 2 21 62Y3A11 Exterior ...
Page 68: ...SPEC Specifications 2 25 62Y3A11 Exterior ...
Page 98: ...CHK ADJ Periodic checks and adjustments 3 23 62Y3A11 MEMO ...
Page 102: ...FUEL Fuel system 4 3 62Y3A11 Cooling water hose È Models with flushing device ...
Page 103: ...62Y3A11 4 4 1 2 3 4 5 6 7 8 I MEMO Hose routing ...
Page 104: ...FUEL Fuel system 4 5 62Y3A11 Fuel line 4 ...
Page 106: ...FUEL Fuel system 4 7 62Y3A11 Fuel filter and fuel pump 4 ...
Page 110: ...FUEL Fuel system 4 11 62Y3A11 Carburetor unit 4 ...
Page 112: ...FUEL Fuel system 4 13 62Y3A11 ...
Page 114: ...FUEL Fuel system 4 15 62Y3A11 ...
Page 116: ...FUEL Fuel system 4 17 62Y3A11 Carburetor 4 ...
Page 125: ...62Y3A11 4 26 1 2 3 4 5 6 7 8 I MEMO ...
Page 140: ...POWR Power unit 5 13 62Y3A11 Power unit 5 ...
Page 142: ...POWR Power unit 5 15 62Y3A11 ...
Page 144: ...POWR Power unit 5 17 62Y3A11 ...
Page 146: ...POWR Power unit 5 19 62Y3A11 ...
Page 148: ...POWR Power unit 5 21 62Y3A11 ...
Page 150: ...POWR Power unit 5 23 62Y3A11 ...
Page 155: ...62Y3A11 5 28 1 2 3 4 5 6 7 8 I 7 Remove the power unit by removing the bolts G Power unit ...
Page 156: ...POWR Power unit 5 29 62Y3A11 Timing belt and sprockets 5 ...
Page 162: ...POWR Power unit 5 35 62Y3A11 Cylinder head 5 ...
Page 164: ...POWR Power unit 5 37 62Y3A11 ...
Page 178: ...POWR Power unit 5 51 62Y3A11 Cylinder body 5 ...
Page 180: ...POWR Power unit 5 53 62Y3A11 ...
Page 197: ...62Y3A11 5 70 1 2 3 4 5 6 7 8 I MEMO ...
Page 206: ...LOWR Lower unit 6 7 62Y3A11 Lower unit F50 F50A 6 ...
Page 209: ...62Y3A11 6 10 1 2 3 4 5 6 7 8 I MEMO Lower unit F50 F50A ...
Page 210: ...LOWR Lower unit 6 11 62Y3A11 Water pump and propeller shaft housing F50 F50A 6 ...
Page 219: ...62Y3A11 6 20 1 2 3 4 5 6 7 8 I MEMO Water pump and propeller shaft housing F50 F50A ...
Page 220: ...LOWR Lower unit 6 21 62Y3A11 Drive shaft and lower case F50 F50A 6 ...
Page 230: ...LOWR Lower unit 6 31 62Y3A11 Shimming F50 for USA and Canada 6 ...
Page 234: ...LOWR Lower unit 6 35 62Y3A11 Shimming F50A for worldwide 6 ...
Page 240: ...LOWR Lower unit 6 41 62Y3A11 Lower unit T50 FT50B FT50C 6 ...
Page 243: ...62Y3A11 6 44 1 2 3 4 5 6 7 8 I MEMO Lower unit T50 FT50B FT50C ...
Page 244: ...LOWR Lower unit 6 45 62Y3A11 Water pump and shift rod T50 FT50B FT50C 6 ...
Page 249: ...62Y3A11 6 50 1 2 3 4 5 6 7 8 I MEMO Water pump and shift rod T50 FT50B FT50C ...
Page 250: ...LOWR Lower unit 6 51 62Y3A11 Propeller shaft housing T50 FT50B FT50C 6 ...
Page 258: ...LOWR Lower unit 6 59 62Y3A11 Drive shaft and lower case T50 FT50B FT50C 6 ...
Page 268: ...LOWR Lower unit 6 69 62Y3A11 Shimming T50 for USA and Canada 6 ...
Page 272: ...LOWR Lower unit 6 73 62Y3A11 Shimming FT50B FT50C for worldwide 6 ...
Page 284: ...BRKT Bracket unit 7 5 62Y3A11 Tiller handle F50 F50A T50 FT50B 7 ...
Page 286: ...BRKT Bracket unit 7 7 62Y3A11 ...
Page 288: ...BRKT Bracket unit 7 9 62Y3A11 ...
Page 290: ...BRKT Bracket unit 7 11 62Y3A11 ...
Page 292: ...BRKT Bracket unit 7 13 62Y3A11 ...
Page 295: ...62Y3A11 7 16 1 2 3 4 5 6 7 8 I MEMO Tiller handle F50 F50A T50 FT50B ...
Page 296: ...BRKT Bracket unit 7 17 62Y3A11 Tiller handle FT50C 7 ...
Page 298: ...BRKT Bracket unit 7 19 62Y3A11 ...
Page 300: ...BRKT Bracket unit 7 21 62Y3A11 ...
Page 303: ...62Y3A11 7 24 1 2 3 4 5 6 7 8 I MEMO Tiller handle FT50C ...
Page 304: ...BRKT Bracket unit 7 25 62Y3A11 Bottom cowling 7 ...
Page 306: ...BRKT Bracket unit 7 27 62Y3A11 ...
Page 309: ...62Y3A11 7 30 1 2 3 4 5 6 7 8 I MEMO Bottom cowling ...
Page 310: ...BRKT Bracket unit 7 31 62Y3A11 Upper case 7 ...
Page 312: ...BRKT Bracket unit 7 33 62Y3A11 ...
Page 314: ...BRKT Bracket unit 7 35 62Y3A11 F50 F50A T50 FT50B ...
Page 316: ...BRKT Bracket unit 7 37 62Y3A11 FT50C ...
Page 322: ...BRKT Bracket unit 7 43 62Y3A11 Clamp brackets 7 ...
Page 326: ...BRKT Bracket unit 7 47 62Y3A11 Swivel bracket and steering arm 7 ...
Page 330: ...BRKT Bracket unit 7 51 62Y3A11 Power trim and tilt unit 7 ...
Page 333: ...62Y3A11 7 54 1 2 3 4 5 6 7 8 I MEMO Power trim and tilt unit ...
Page 334: ...BRKT Bracket unit 7 55 62Y3A11 Tilt cylinder and trim cylinder 7 ...
Page 336: ...BRKT Bracket unit 7 57 62Y3A11 Trim cylinder 7 ...
Page 338: ...BRKT Bracket unit 7 59 62Y3A11 Gear pump 7 ...
Page 340: ...BRKT Bracket unit 7 61 62Y3A11 ...
Page 352: ...BRKT Bracket unit 7 73 62Y3A11 Power trim and tilt motor 7 ...
Page 360: ...BRKT Bracket unit 7 81 62Y3A11 MEMO ...
Page 382: ...ELEC Electrical systems 8 21 62Y3A11 Starter motor 8 ...
Page 389: ...62Y3A11 8 28 1 2 3 4 5 6 7 8 I MEMO ...
Page 398: ......