Where is the crank position sensor?

[timmy2take]

Think mine might need a change / clean but its pretty cramped in the engine and I couldn't see it.

A pic would be handy as I don't know my way around this engine yet.

 

[Gray]

Top of the gearbox bell housing.... 12 o'clock if you are looking from the end of the gearbox.

 

[Budgie]

As Gray said. Underneath the thermostat housing.

 

[MartinR]

Here