Is valve timing on a dohc ZC motor set by lining up the cam gear marks exactly with the upper surface of the head and the single mark on the crank pulley at #1 TDC? Are there any special tricks to setting this?

 

the marks that are next to each other on the gears should line up with the top of the head - the marks on the opposite sides of the gears will be one tooth above the top of the head - the single mark off to the right of the 3 ignition timing marks on the crank pulley is the TDC mark ('B' in picture) and needs to align with the pointer on the timing belt cover

 

thank you, this clarifies some of the vagueness of the Rover 416 Haynes manual