Inspection Of Igniter - TOHATSU MFS 4 Service Manual

Electrical System

3) Inspection of Igniter

1. Remove igniter, and turn plug cap counterclockwise to
remove it from high tension cord.
2. Measure igniter resistance. Replace if other than specified
value.
Remove the part and test it as a separate unit.
Igniter tester check table
Spark Plug Cap
Spark Plug Cap
GND
LED
White
á ÒONÓ means conductive.
á ÒCONÓ means that pointer of circuit tester moves once and then returns to the range shown in ( ).
Circuit tester: HIOKI3030 (Measurement range:1kΩ)
The measurement varies depending on the measurement range of the circuit tester or voltage due to diode
used in the unit.
This check provide only a reference, and it is impossible to perform perfect check.
3. Install plug cap onto high tension cord by twisting
clockwise.
4. Install igniter so that specified clearance is achieved, and
connect plug cap to spark plug.
Thickness Gauge
P/N. 353-72251-0
Igniter Clearance:
0.2 - 0.4 mm (0.008 - 0.016 in)
Igniter Bolts:
6 N · m (4 lb · ft) [0.6 kgf · m]
5. Connect igniter lead to stop switch.
8-6
Stop terminal
ON
(15-29 k½)
ON
(2.9-6.9 k½)
CON
(120-280 k½)
1:
LED(White) Stop terminal
ester Ò+Ó terminal
Spark Plug Cap
CON
(65-145 k½) (51-119 k½)
(10.1-17 k½)
ON
(10.1-17 k½)
CON
(53-117 k½) (30-70 k½)
ND(non-coated face)
White
GND
LED
CON ON
(3.0-7.0 k½)
ON ON
(16-30 k½)
ON
(3.4-8.0 k½)
CON
1 1
4st 4/5/6 2011