To repair a geyser leakage, you can follow these general steps:

1. Turn off the power supply to the geyser. If the geyser is an electric one, turn off the circuit breaker or switch. If it is a gas geyser, turn off the gas supply.
2. Turn off the water supply to the geyser. This can usually be done by turning a valve located near the geyser.
3. Drain the geyser. This will involve attaching a hose to the drain valve and allowing the water to flow out of the geyser until it is empty.
4. Locate the source of the leakage. Inspect the geyser to determine where the leak is coming from. Common areas where leaks occur include the inlet and outlet pipes, the pressure relief valve, and the tank itself.
5. If the leak is caused by a loose fitting or joint, tighten the nuts or bolts to secure the connection. Use a wrench or pliers to tighten the nuts, being careful not to overtighten and cause damage to the pipes or fittings.
6. If the leak is caused by a damaged sealant or gasket, remove the old sealant or gasket and clean the area thoroughly. Apply a new layer of sealant or replace the gasket, making sure it is the appropriate size and type for the geyser and connection.
7. If the leak is caused by a damaged pressure relief valve, it may need to be replaced. This will involve turning off the water supply and draining the geyser. Remove the old valve and install a new one, following the manufacturer's instructions.
8. Once the repair has been made, turn the water supply and power supply back on and check for any leaks. If there are still signs of leakage, turn off the water and power supply and repeat the repair process until the geyser is completely sealed and the leak is stopped.

It is important to take appropriate safety precautions when attempting to repair a geyser leakage. If you are unsure about any aspect of the process or the damage to the geyser is severe, it may be best to hire a professional from Locals4u for assistance.