What is the fuel pump pressure spec for a 1986 yamaha fz 750

SOURCE: What tipe MOTOR oil use yamaha 750 FZ, 1987 YEAR

a good 10w40 oil..if you dont know what type was used before then i would flush the engine then put the new oil in

SOURCE: wiring diagram for yamaha fz 750/year 1985

http://www.repairmanualclub.com/motomanuals/index.php?cid=12&sortvalue=name&order=ASC&limit=0

SOURCE: does the yamaha fz 750 use transmission fluid or

The FZ750 uses the same oil for the transmission and crankshaft and top end. All oil is stored in the oil pan below the transmission and distributed throughout the engine by an oil pump.
If you are asking if you need to use different oil for the transmission than the engine, no.
If the oil level is correct for the transmission, it is correct for the whole engine.

SOURCE: hpw much oil does a 1986 yamaha fz 750 motercycle

3.0l or 3000mls

SOURCE: hi i have a yamaha fz 750 1987. there is no srark

its possible the cdi unit has failed or the hd leads/spark caps might be at fault, i had the same problem on a 1990 zzr600 it turned out to be spark caps where ao to high a resistance and causing no spark to pass. try this first and if still no spark id go with another cdi unit. hope this helps