Will this pump work with my current washer fluid reservoir and hoses?

Yes. This pump mounts directly to factory connection points and lines without modification. Verify your reservoir's pump mount matches the OEM style before installation.

Do I need to drain the reservoir before swapping in the new pump?

You don't have to, but it makes the job cleaner. If you leave fluid in the tank, have towels ready — some spillage is common during disconnect and reconnect.

What if the pump doesn't spray after I install it?

Air in the lines is the usual culprit. Run the pump for 10-15 seconds with the nozzles pointed away from your windshield to purge the system. If spray is still weak or absent, check that the intake tube inside the reservoir isn't blocked or kinked.