Welcome. This is a great site. Please post a photo of your new bike. Everyone here loves photos.
On a Suzuki you cannot simply bypass the oil pump and run premix- as some are inclined to try -or you will ruin the bottom end. Suzuki's CCI oil injection system is more elaborate than, say, Yamaha's Autolube system, in that beyond squirting oil into the intake tract it also feeds oil to the main bearings under pressure.
Here's a link to a lengthy Suzuki forum post on the topic. It includes pump adjustment and test procedures.
Suzuki CCI
Here is another link to an online parts manual for your bike. This is for a 1973 model, the oldest year listed on that site.
MT50 Parts List