Defender Td5 110 with TR55 fuel sender adjust

[jbe]

I have a TD5 Defender 110 with a Long Ranger TR55 replacement tank. It appears to me that the fuel sender arm has not been adjusted properly (or at all) when the pump was installed.

So, before I pull the pump again, I wanted to know what the proper procedure for adjusting the sender arm would be:

Is it bending the arm until the float is approx. 5mm from the bottom of the tank, or is there a template for it?

Thanks Joachim