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4.3. Starting & Stopping the diesel powered 407 Shear
The engine speed Governor is preset to 2200rpm. Do not adjust.
Do Not Adjust the Engine Speed Governor. Do Not Override
the Fuel Shut-Off Mechanism.
Do not run the Shear without a fully charged battery
connected
Never run the Engine without a fully charged battery connected. The Fuel Shut Off
mechanism requires battery power to operate correctly. Never override the Fuel Shut Off
mechanism as the Key Switch Mechanism requires it to function properly.
4.3.1. To Start the Shear
The engine is operated via a 3 position waterproof key switch with Stop ‘O’, Run ‘I’ and
Start ‘II’ positions. Turning the switch to the Run position will initiate the following sequence:
• Initiate the Pre-Heat Relay and Pre-Heat Timer.
• Once the Pre-Heat Timer has completed (approximately 10 seconds) the Pre-Heat
Relay will disengage and the Pre-Heat Indicator will extinguish.
• The Fuel Relay will then engage and the Fuel Shut Off Timer will commence.
• Afterapproximately20seconds theFuel Shut OffTimer willnish andthe Fuel
Relay will disengage unless the key is turned to the Start position.
Stop Engine
Run Engine
Start Engine
Pre-Heat
Indicator
Oil Warning
Light
Temperature
Warning Light
Low Battery
Warning Light