injection pump spill timing

zetor 6245 advice please on spill timing the injection pump ie degrees btdc and where the timing marks are.

thanks graham

Hmm.. that sounds complicated...
We've adjusted injection timing (on an old mcCormick) by loosening 3 bolts (in slot holes) that connect fuel pump with distribution drive, take a pipe wrench and turn the pump untill ye can hear it runs fine. too early as well as too late makes a bad sound. This is done with the engine at about 1000 rpm. that worked for us...