Fuel delivery timing is the same as in the 616 but MB provided a separate reference for installation timing that is unrelated to fuel delivery timing in the newer engine. There reference mark is at 14*ATDC but this is only to verify IP position. 14*ATDC has nothing to do with actual fuel delivery.

This picture shows a 602 pump with the locking tool installed -



There is a plug, a short bolt with a 17mm head, that covers the RIV port when the tool is not installed. Do not turn the engine or IP when the tool is installed! The tool prevents the IP internals from turning by engaging this tang -



The tang is centered in the RIV port when the engine is at 14-15*ATDC, assuming the IP is properly timed.

Sixto
87 300D