Does any one know where I can find the vacuum hose diagram for a 1991 yamaha moto 4 350cc four stroke. Also why are there so many cables I can identify two as brakes and one as the throttle and another one I believe is choke but there is one going the rear of the engine maybe into the transmission that I'm not sure of any help is appreciated

 

Years since I worked on a 90s Big Bear but I'm fairly sure there are no vac hoses, possibly a little one going on the side of the carb to the diaphragm. The rest of the tubes on the carb are breather hoses that, sort of, go upwards and end where rain isn't going to run into them. Exception is the one on the bottom of carb, which must go downwards. There are two reverse lever cables, trace the mystery cable back to where it comes from if you can't work it out.

 

Thanks for the info, I will keep it in my mind.