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In the manual I need a 50 DS DID 102L, in our forum its a 530-102 (link below) I removed the chain and the distance between the links (the pitch is 5/8) so the starting number I understand is 5. The width of the chain is 3/8 (6/16 inch, 9.6mm) so I understand from this it is a 30 chain. Add the...

Points are fairly forgiving except for water. I removed mine completely cleaned them up with some old points files I had and washed them in petrol (gasoline) remember to add some light oil to the wick in the centre to help it spin and go through the process of setting them all back up. Its in...

Are sprockets standard wheel nut pattern for every motorcycle or do you have to actually purchase a yamaha XS400 sprocket from Yamaha?

Have I seen the price, yes. I am shocked and wish I never sold my RD400 or my XY falcon lookalike GTHO, those blood things are worth not far off a million Aussie dollars now. I think I bought my RD for about 700 aussie dollars and sold it for 300...grrrr

Very nice looking bike, mine is red and I dont have the little dinky seat but I would like one. My floats are not brass they are like plastic, so perhaps its different. There is a test well detailed in the manual and also in my blog on all the issues I had with my carburettas and this test using...

I set my floats to 20mm, they used to overflow at 27mm as you describe and as for the spark, is 12VDC actually getting to the coils? there are multiple switch between the coils and the battery and if the points are both closed then nothing will fire. Stick a multimeter across the points and make...

I owned a RD400 back in the early 1980's so I argue its not a mid life crisis since I already did it. :)

Yea, it was a bad idea. I got a terrible headache and a cough from my efforts of trying to tune a super rich engine in a small area. I dont recommend it in future :-) Thanks for your help, I more worked on Cars and cyclotrons my life not really motorcycles although I have had a few. I guess I...

I have a direct flight from my home in Sweden to Chicago Ohare and enough points on SAS to buy return tickets and I have a 40KG baggage allowance. Are there any good motorcycle breakers (places that sell second hand parts, I dunno what you call then in USA...wreckers perhaps) in the Chicago...

Every few hours I wandered into the garage and gave the pedal 30 minutes or so of squeezing and watched the air bubbles come out. I did this until it became nice and firm and thats how it is now. I remembered I had a brake bleeder I had bought to remove the oil on diff pump on a cyclotron years...

Ok, tomorrow I go looking for tubing and a syringe but in the mean time I try the hold the brake handle all night idea. Fingers crossed.

Ok, I will give this a shot tonight and I also saw that there is a reverse bleed method that apparently works. Its very different to the car master cylinder. I need to find some 3/16 silicon tube.

I had a look at this post also, one guy said it takes 4 hours to bleed it? I have honed the cylinder walls with a hone tool and the little bleed hole in the reservoir as well as the big fill hole are both clear. But, does it really take hours of pumping to bleed...

It took you four hours to bleed it? I have a similar issue and I have been pumping it for about 20 minutes....are you telling me it took you 4 hours of pumping??

On my abandoned XS400 I opened the brake master up some months ago and it was in terrible condition. Ordered some rebuild kits and a couple of master cylinder hones and went off for a buisiness trip. Came back and one night rebuilt the master brake cylinder put it back together and not having...

Nice idea, did the guy in Germany have more to sell of were you just lucky? Mikonies are a serious pain in the bum TBH....I start to feel I understand them but I have not developed a love for them yet. I rebuilt mine and ended up having to spend hours with the silly things getting them to...

Ok, I ended up setting my floats at 20mm as this gives a good vision through the tube in the method you (and the manuals) describe. So mine are now set at 20mm. Mushroom (plug) when I rebuilt the carburetta I replaced the mushrooms with new ones. I measureed the width but not the depth. Width...

Ok, I will close this thread from what I have learnt myself about this issue. The mushroom covers the pilot jet. This jet is for the idle, the mushroom covers the hole and then the only way that fuel can go in to the pilot jet is via a small hole inside the bore that connects main jet and this...

Inside the float bowl of the Mikoni BS34 is a rubber mushroom. 1. what is it covering? 2. inside the hole seems to me a side vent, does the mushroom cover it or should fuel be going from the main jet into this place? if the mushroom covers the side jet...is this a problem?? 3. Does anybody know...

Off the carbs come again and looked them over. If I do the test in the manual with the tubes connected to the drains then it all looks wrong. For some reason the only way I can get it right is to set it to 20mm but I found a few youtube tutorials that suggest 20mm for example In the haynes...