TOHATSU 40 Service Manual page 220

The CD Unit Output Test - Cranking RPM is used to
22 23
determine the output voltage, in DVA, from the CD
Unit (1), to each ignition coil (2) while you are cranking the engine.
1. Remove all spark plug caps.
2. Adjust spark gap tester (1) to 7/16 in [11 mm].
24
3. Connect each spark plug cap (2) to spark gap tester (1).
24
4. Secure spark gap tester to a clean ground on engine block.
To avoid possible shock hazard, do not handle
ignition coils or spark gap tester during cranking
tests.
3-/ 4-Cylinder
WARNING
ELECTRICAL SYSTEM
T1484
T1474
7-41