fuel shut offs

onebun · Post by **onebun** » Mon Sep 28, 2009 6:43 pm

both of my 81s do not have a fuel fuel shut off.i am running a 540 and i have read that the vmax does have a fuel shut off. is it a nice to have feature to shut the gas off when needed or did yamaha put these on for a reason,and wear abouts in the fuel system does it go,i am thinking before the pump.thanks for your input guys

velocity · Post by **velocity** » Tue Sep 29, 2009 7:34 am

The fuel shut-off's from the factory on the V-Max were on the left hand side on the dashpanel. My 87 still has the stock ones and they work. I took the assembly off my 86 as it was frozen and just installed in-line shut-off-s. In both cases my shut-off's are located after the fuel pump. It's always a good safety feature to avoid your engine flooding due to a gasket/diaphtam leak in the carbs. I use them when trailering or when the machine sits. It's also a nice feature when you want to run the gas out of the lines and the carbs when storing for the winter. This is just my opinion.

Hope this helps.

agfirecat · Post by **agfirecat** » Tue Sep 29, 2009 12:22 pm

I installed one on my 81 after my base filled with gas once i put it in the same location there at on my 83 the radiator bracket as u can seein the photo . but you gotta open the hood to use it

Post by **tyler440** » Tue Sep 29, 2009 1:46 pm

different years had different syles.... i believe it was the 83 and 84... maybe 85 that had the syle like above... the 86 had the remote cable kind... which dont seem as nice but whatever floats your boat... my 84 has two shut offs (2 pumps) and i can manage to turn them on while riding.... ya know like how i take off and realize once it starts sputtering that i forgot to turn the gas on.... quick lift the hood and turn them on... and never stop moving... been there done that...

Marc Machine · Post by **Marc Machine** » Tue Sep 29, 2009 6:56 pm

Hey Johnny,
My two fuel shut offs are like agfirecat stated. After the pumps and they are a very good idea for several reasons as mentionned above. I didn't know the 81 didn't have this feature. Later, Marc

onebun · Post by **onebun** » Tue Sep 29, 2009 8:47 pm

right on thanks guys,going to be simple only have 1 pump on this machine when i got it going to try 1 pump and see how it works, cold here tonight 2deg celcius yehhhh!