TOHATSU 90 - Section 4 Powerhead

3-/ 4-Cylinder
4-1
General Precautions ............................................................................................................ 4-2
Service Specifications ......................................................................................................... 4-3
Troubleshooting ................................................................................................................... 4-7
Description of Operation ..................................................................................................... 4-8
Cylinder Compression Test ................................................................................................. 4-9
RPM Performance Test ..................................................................................................... 4-10
Overheat Sensor ............................................................................................................... 4-11
Water Pressure Sensor ..................................................................................................... 4-12
Thermostat........................................................................................................................ 4-14
Recoil Starter .................................................................................................................... 4-15
Flywheel ............................................................................................................................ 4-20
Powerhead ........................................................................................................................ 4-23
SECTION 4
POWERHEAD
TABLE OF CONTENTS