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Just got 2 250 EFI's and was looking at the routing of some hoses that go into the bottom of the air silencer and they are different from each other. Does any body have a diagram of the routing of the numerous hoses on these motors. Thanks
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the gray hose from the intake goes to the lowest nipple.
the black hose,oil tank vent line, goes to the other nipple. -
250 Yamaha
Thanks for your responce. I have 2 hoses(same size) that come off the bottom manifold on the starboard side and then go to the port side. Also have a smaller hose that comes off the top of the engine oil tank(vent?). 3 places to connect them. 2 on the air silencer, lower port side, and one that comes off the top the high pressure pump. What goes where?Comment
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one of the gray hoses goes to the VST.
someone mimicked with it.
it not only vents the VST its the fuel pressure regulator vacuum sense hose.
yes there are 3 nipples on the air box, only two are used.
one is typically NOT drilled and is blocked off with plastic.
one nipple is for allowing oil/fuel spit back to be collected and burned, the other is simply a vent for the oil tank and in the event of an oil tank overflow to catch the oil.
the other gray hose from the intake goes to a T fitting behind the VST.Comment
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