Why wouldn't the crankcase breather vent the engine sufficiently for oil drainage? :think: MY YZ-F manual doesn't say to do anything like this during an oil change...Chili said:The only logic I can come up with is it helps vent the system
oldguy said:Doug my guess is in order to drain the reservoir you need to open the 2nd hole. In order to keep the rotation as friction free as possible the oil is mostly held in the reservoir and only what is needed sits in the sump?
XRpredator said:I would do everything the manual says. No questions asked. Otherwise the black helicopters will show up.
76GMC1500 said:It probably serves as a vent so the oil in the frame can drain into the crankcase more quickly.
76GMC1500 said:Oh, it's a semi-dry sump with seperate oil chambers.
It's a "semi"-dry sump that uses the tranny as the reservoir.Chili said:If by separate chambers you mean like the Honda's with 2 different filler holes then no that is not the case either.
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