Greetings. So, I am a newbie and have just gone and purchased a 1973 R75/5. The bike is in very nice condition. 29000 miles.. We are getting to know each other.
I like to tinker with stuff like this, so thanks for any one who can help me here.
First issue I am having is with the engine running rough at higher rpm levels.
As I get up to 3500 and apply power, the engine starts to sputter and will not accelerate. Max speed in 4th gear is 50 mph. It almost seems like at that point It isn't getting fuel. and bogs down. Logic tells me there is some blockage somewhere. . Any thoughts on this are appreciated.
I am also a little confused on the proper location of the fuel petcocks. The manual says that when the cock is inline with the fuel line that this is the off position, but the label on the valve says down is on and up is reserve and the 3 o clock and 9 o clock postitions are off. The label thing can be moved, so maybe someone moved this around. Can you tell me what setting is off on this thing.