The pump doesn't have to come off to set timing. You've seen the bolt near the adjuster. Follow to the front of the engine to find the head. Look down between the block and the IP to find another square nut then follow to the front. Feel around under the IP for the third square nut then follow to the front. Or feel for the 13mm head bolts around the pump.

There's a fourth bolt at the back end of the IP. Should be obvious.

If you adjust timing then find a pool of engine oil near the driver side engine mount, you disturbed an old brittle o-ring between the IP and block. Now the pump has to come off...

Sixto
... stay tuned