Unless something is bent i recommend superlube.
http://www.super-lube.com/super-lube-multipurpose-aerosol-ezp-68.html

Put a rag under it when spraying. Light touch on the button too.

Yes ↑↑↑absolutely don`t fire hose the assembly, just a drop or two on the linkage using something to apply the lube unless you can spray with a light touch,i can apply it very well by setting a rag at the linkage and prevent any extra flow from going awry.

They also manufacture a precision oiler too you can get at home depot or a good hardware store . http://www.homedepot.com/p/Super-Lube-7ml-Precision-Oiler-Oil-with-Syncolon-PTFE-Lubricant-Per-Each-51010/202932717

Looks like the Number match S.u. which is triggered by a 10 point relay contact then engages a match unit alternating switch which energizes the change relay coil moving the make and break switches, 2 sets of m&b contacts positions gives 100 and the other position gives 1000[one m&b[d]contacts is for center jet bumper the other m&b[e]contacts is for left & right jet bumpers] while the other m&b[f] contact switch within that change re. controls the lite . Start inspection with the 10 point relay contact ,then see the match unit alternating switch, then the change relay contacts[ F-E-&D],check all of them as you go along,clean/gap any as needed.

1 Change re..JPG

Change re.↑

2 # match s.u..JPG

Match s.u.↑

3 C Re. sch..JPG

C re.↑

4 Change contact sw. sch..JPG

Change contacts↑