TOHATSU 40 Service Manual page 228

The following table summarizes the availability of the sensors and
approximate RPM when this feature is activated:
Sensor Type
40 (optional) / 50
Overheat Sensor
60 / 70 / 80 / 90
40 (not available) /
50 (not available) /
Water Pressure
60 (optional) /
Sensor
70 (optional) /
80 / 90
40 / 50 / 60 /
Oil Level Sensor
70 / 80 / 90
Description of Operation for 115/1 20/140 Engines
In these engines, the water pressure sensor (1) and lower oil
2
level float (16) of the oil level sensor (2) control the half-
maximum RPM limitation input [terminal (9)] to the CD Unit (3).
When either, or both, of these sensors detect an abnormal
condition (see Section 4 for the water pressure sensor and Section
3 for the oil level sensor), the half-maximum RPM limitation input
goes low and the CD Unit limits the engine speed to about half its
maximum RPM.
3-/ 4-Cylinder
Engine Model RPM Limitation
3500 ± 400 RPM
3500 ± 400 RPM
ELECTRICAL SYSTEM
NA
T1488
7-49