Inspection Of Brushes; Inspection Of Starter Motor Pinion; Inspection Of Magneto Switch - TOHATSU MD 70-90C2 Service Manual

Electrical System

3) Inspection of Brushes

Measure brush length a, and replace brush if the length is
1.
less than specified value.
Brush Length a : Standard Value
16 mm (0.63 in)
Wear Limit :
12 mm (0.47 in)
2. Check conductivity between brush and starter terminal.
Replace brush ass'y if any of the following conditions are
not met.
Brush—Brush
Brush—Starter motor terminal
Brush—Starter motor terminal
For all brush and terminal
combinations not listed above

4) Inspection of Starter Motor Pinion

1. Check pinion teeth for crack and wear. Replace if necessary.
Turn only pinion to check that pinion 1 can be rotated
2.
smoothly in one direction. Replace if necessary.
Turn pinion 1 counterclockwise to check that it
can move up smoothly, and then clockwise to
check that it can be locking.
5）Inspection of Magneto Switch
1. Measure resistance of magneto switch. Replace magneto
switch if the resistance is out of specified range.
Resistance of magneto switch at 20˚C (68 ˚F)
Holding side (between 1 and 2): 0.56 to 0.68 Ω
Attracting side (between 1 and 3): 0.33 to 0.41 Ω
8-8
2 – 3
Conductive
4 – 5
2 – 1
Conductive
3 – 1
4 – 1
Non-
Conductive
5 – 1
Non-
Conductive
a
1
2
4
5
4 2
5
3
1
3
1
2
3
1
TLDI 75/90C2 2010