Singer 319w needle hits bobbins - Singer 7462 Mechanical Sewing Machine

SOURCE: Singer 7442 - Needle hitting bottom

FIRST DETERMIN NEEDLE BAR POSITION TURN STITCH REGULATOR TO LARGEST STITCH, THEN TURN HAND WHEEL TIL' NEEDLE IS ABOUT TO ENTER NEEDLE PLATE.
AT THIS POINT THE FEED DOGS SHOULD BE JUST AT OR JUST UNDER PLATE. IF SO NEEDLE BAR IS, IN CORRECT POSITION,AND TIMING WILL BE SET AT THE HOOK.
TO SET TIME REMOVE NEEDLE PLATE TURN HAND WHEEL SO NEEDLE IS IN LOWEST POSITION. USING A SMALL RULE RAISE NEEDLE BAR 3/32 OF AN INCH ( OR 3 MM FOR A METRIC RULE) .HOOK POINT SHOULD BE IN CENTER OF NEEDLES WIDTH. LOOSEN THE 2 SHAFT SCREWS
SLIGHTLY,TURN HOOK TIL CENTER OF NEEDLE. TIGHTEN SCREWS. IF NEEDLE BAR IS OUT OF TIME. BRING HOOK TO CENTER OF NEEDLE AND LOOSEN SCREW IN LEFT COVER. RAISE OR LOWER NEEDLE BAR TO SET 3/32OF AN INCH. THE 3/32 MUST BE VERY VERY CLOSE.

SOURCE: singer quantum sewing machine won't pick up bobbin thread

Try changing your needle

SOURCE: Bobbin won't p/u thread Singer 478

i have no idea how to thread this machine ?

SOURCE: singer quantum cxl sewing machine needle hitting metal

Your needle is probably to long or you need to open it more

SOURCE: Singer 457 Zig Zag Sewing Machine not catching bobbin thread.

There are manuals avilable online to purchase for the singer machines, SOrry I was not able to locate a site that has them for free.
.... http://sewingonline.co.uk/singer-manuals.html