941403-1000 Tohatsu WAVE WASHER, D=10

Illustration 1 g00849404
When the ECS is in the Black Start position, the engine will not start until the push button is depressed. The engine will stop if the snorkel shutdown device changes states. The engine will stop if the ECS is turned to the STOP position or to the OFF position.
Illustration 2 g00927378
When the ECS is in the Black Start position, the push button illuminates. This informs the operator that the button must be depressed in order to start.Test Step 1. Check for Connector Damage
Turn the Engine Control Switch (ECS) to the OFF/RESET position.
Check the connectors and wiring for the following problems: damage, corrosion, abrasion and incorrect attachment.Expected Result:The connectors and wiring should be free of the following problems: damage, corrosion, abrasion and incorrect attachment.Results:
OK - There are no problems with the wiring. Proceed to test step 2.
Not OK - There are problems with the wiring.Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Stop.Test Step 2. Check the Switch Status on the Caterpillar Electronic Technician (ET).
Install the Cat ET to the service tool connector.
Turn the ECS to the BLACK START ENABLE position. The engine should be OFF.
If you do not disable the Air Start the engine will start.
Disable the Air Start.
Operate the Black Start Push Button. Observe the status on the Cat ET.Expected Result:The status should change when the position is changed.Results:
OK - The button is operating normally. Proceed to test step 3.
Not OK - No change is observed on the Cat ET when the Black Start Push Button is operated. Proceed to test step 4.Test Step 3. Check the Switch Status on the Cat ET.
Install the Cat ET.
Observe the status for the Black Start Push Button.
Turn the ECS to the BLACK START ENABLE position. The engine should be OFF.
Turn the ECS to the STOP position.Expected Result:The status