Inspection Of Starter Motor Operation; Battery Charging System; Inspection Of Rectifier; Rectifier Tester Check Chart - TOHATSU MFS 9.9 Owner's Manual

Electrical System
7) Inspection of Starter Motor
Operation
1. Assemble starter motor, and check, before and after
installing it on the power unit, by applying voltage between
points "+" and "-" that it operates normally.
Energizing starter motor produces sparks, and
thus, any inflammable matter must be kept
away from the motor.

6. Battery Charging System

1) Inspection of Charge Coil
Remove wire band 1 of cable that comes from alternator
1.
located in the rectifier.
2. Disconnect cable coupler from charge coil, and measure
resistance.
This test can be made without removing parts.
Alternator (Charge Coil) Resistance
: Reference Value (at 20°C)
White (W) – Yellow (Y)
0.27- 0.41 Ω

2) Inspection of Rectifier

●Check wire harness for disconnection of lead wire and
defective connection.
●Check conductivity between each point by referring to the
following table. Value in ( ) is reference value.
●Perform the measurement with all connections
disconnected to make the component a separated unit.
This test can be made without removing parts.

Rectifier Tester Check Chart

Red
R
White
W
Black
B
Yellow
Y
8-20
"ON" means "conductive", and "OFF"
Tester Lead Positive (+) Side (Red)
Red White
R W
OFF
ON
(3.4Ω)
ON ON
(4.6kΩ) (2.2kΩ)
ON ON
(3.4kΩ) (4.6kΩ)
1
means "non-conductive".
Black Yellow
B Y
OFF OFF
ON ON
(2.3kΩ) (4.6kΩ)
ON
(2.2kΩ)
ON
(2.3kΩ)
4st 9.9/15/20 2008