New Holland T4.90 FB Service Manual page 17

1.2.1.4 Safety rules regarding the tractor
Attention
Read the use and maintenance manually thoroughly before boarding the tractor, and follow the instructions
given precisely.
1.2.1.4.1 Start
- Never run the engine in an enclosed space without adequate ventilation or extraction systems for
evacuating the exhaust gas.
- Keep your head, body, limbs, feet, hands and fingers away from rotating fans and belts at all times.
1.2.1.4.2 Engine
- Unscrew the radiator cap very slowly before removing to release pressure from the system.
Only top up with coolant with the engine off or, if still hot, idling.
- To prevent the risk of fire caused by spilt fuel, never refuel the machine while the engine is running,
especially if the engine is hot.
- Never attempt to check or adjust the tension of fan belts while the engine is running. Do not adjust the
fuel injection pump settings while the engine is running.
- Do not lubricate the machine while the engine is running.
1.2.1.4.3 Electrical system
- If it is necessary to use an auxiliary battery, connect the cable terminals correctly: connect (+) to (+)
and connect (-) to (-). Never short-circuit the terminals.
Danger
The gas released by batteries is highly flammable.
When charging a battery, leave the battery compartment uncovered to ensure more effective ventilation.
Never check battery charge by jumpering the terminals with a metal object. Avoid sparks and flame in the
vicinity of batteries. Do not smoke - explosion hazard!
- Check for fuel leaks before starting any work, and rectify any leaks found before continuing.
- Never charge batteries in an enclosed space: ensure that the area is adequately ventilated to prevent
the risk of explosion caused by the build-up of gas released by the batteries during charging.
- Always disconnect the battery before starting any work on the electrical system.
- If the electrolyte in the battery freezes, the battery may explode if you attempt to charge the battery
or push-start the vehicle. Keep the battery fully charged at all times to prevent the electrolyte from
freezing.
- Batteries release corrosive fumes and flammable gases. Sparks, naked flame and incorrectly connected
cables may cause explosions.
INTRODUCTION
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