Tricky project - 1983 honda vf750s

[Laava]

If the tap is vacuum operated you will need to set it to prime to fill the fuel bowls. Otherwise you have a blockage. Or have you sorted it now?

[ducatilover]

I'd be using a wiring diagram and checking power at any point possible, to and from the cdi.
Also checking the ignition pick up gap, resistance and signal.

If the fuel tap has a prime position, switch it to that.
It may (being a Honda) just be vacuum operated only, one way to get around that is to suck on the vacuum tube to the tap to open the diaphragm

[Larksea]

got it guys thanks for the replies again.

I had started to trace wiring one at a time but them found a wiring diagram at the back of my haynes manual. I had stopped using it since I found it had some incorrect info but this wiring diagram looks ok and will save me heaps of time.

and yes it seems the fuel is vacuum operated, I was wondering what the small pipe that runs from the fuel switch to the nearby cylinder was!

Carbs are still off and it's not been started, i've mostly been looking at the wiring and doing some cosmetic work. The front mud guard has some damage and spots of surface rust. I've actually managed to make some big improvements on it. Still have some small dents on it, i'm going to try and make a wooden spire with a curved top that I can use as like an anvil to hammer them and try flatten the small dents. The Chrome is holding out really well.

still quite keen on checking the cam before I go too much further once I figure out how to get to it. though I am comforted by the fact this bike has obviously done a lot of KMs and if the cam was a problem it would have been junked years ago.

on removing the carbs I've found that one of the rubber mounts that go between the carb and cylinders is split. may be able to repair but I think I may just try get replacements, repaired rubber work probably doesn't have much of a lifespan. Need to check the others more closely as well.

Had some parts arrive. New mufflers, new console/speedo, indicators and some fork mounted side headlight mounts.

I found the original console had some internal damage and cowboy repair work so i'm going to chuck it. Try and salvage the warning box from inside it because I may need that with the new console - maybe hide it under the tank.

Been looking around the web for a nice headlight after looking at dozens of them I found the perfect one but the guy doesn't ship to NZ! Going to send the guy a friendly email and see if I can't persuade him. Or maybe you guys have a tip on where to get a good legal 7inch headlight? There's a lot of shit ones on ebay/amazon/aliexpress

[Larksea]

found a frame break on the weekend

lucky its just a pipe that runs up to the back to support he break light and passenger

any tips on that? I guess it should be just a quick job for someone who can weld.

[ducatilover]

Attack it with a welder