yes.
3.7
check your floats and make sure there is no rust in the tank and you have sufficient flow through your jets.
can i have a Yamaha xs 850 carburetor assembly diagram
The Yamaha 850 XS is an air cooled bike. There is no radiator to fill.
Suggest you call a Yamaha dealer for info.
yes the only difference is the ignitions
20w50
2 Litres
xs
sae 30
carmine red
The gap should be .02-.03in, but some manuals will tell you to go slightly bigger. It should be listed in a manual, which you really should get if you plan on doing any sort of tune ups on your bike.