Like mentioned, it should take basic 705 needles a.k.a. 130 and 15x1. I would however do some thorough cleaning, taking off the needle clamp, cleaning parts, even scraping out the groove in the needle bar (or maybe the inside of the clamp). Much the same for the area under throat plate; feed dogs, bobbin case, hook and race. Make sure the needle goes in the right way. Double check with the manual, but I think the needle goes in with the flat side to the right and it threads from left to right.