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Welcome to the forum! I've never tried a full exhaust, but my understanding is you will get more power, but lose the smooth bottom end. Rejetting the …login to view the rest of this post

Welcome to the forum! There's a few 4xv owners here, I have a 99 that has done over 100,000 miles.

The multipin connector under the LH fairing cover has a different number of pins on the US bikes, so not a good option.

The 4xv is a great bike, but th…login to view the rest of this post

Best solution is flashing the ECU. Waterless coolants have different physical properties to water and are best avoided in high performance engines.

There are quite a few differences between the
electrics of the 4xv and 5jj. There may be more, but these are the ones I know of:
Ignition control un…login to view the rest of this post

I can check my 4xv if you like.

You might be best to buy a standard length chain and see what works. I went +2 on the rear of my bike and cut the chain to fit.

It may be tricky to …login to view the rest of this post

Welcome, it's pretty quiet here but a few of us still check in. There's a ton of great info here if you search carefully.

Did you check the compression first? Does it use oil? If they're both good, just check for cracks in the cylinders and reassemble it. These engines…login to view the rest of this post

Well done, not for me though!

If the prefix is different (first 3 characters), then probably not.
You could try the Venhill website and see if they list the same cable?

My cousin had a similar experience - he had a test done in a shopping mall! Found it just in time.

Does each calliper have a hose back to the master cylinder, or is there hose between them? That may have something to do with it?

Yes, the LCD module will only display what is sent to it. The electronics on the 4xv is nearly 30 years old, and functions were nowhere near as integ…login to view the rest of this post

Unless I've left the bike for more than a few days, the fuel pump on mine clicks just a few times or not at all after turning on the ignition. There i…login to view the rest of this post

Barton wrote: Sun Apr 13, 2025 8:14 pm Is this working
https://photos.app.goo.gl/KLEiAqoQ1p5manty6

Thanks. That's pretty good, smoother than mine. …login to view the rest of this post

New, genuine starter relay fitted. I tried to seat it properly on the rubber mount but the loom isn't routed quite right and is pushing the relay sid…login to view the rest of this post

Barton wrote: Sat Apr 12, 2025 11:29 am ( hope the link works ) Carbs off again and blown through. Mixture screws at 3.5 turns out. Stock brass. Needl

…login to view the rest of this post

Yes, there is a method using the float height. It is tricky though, as you have to hold the carbs at the correct angle as they are almost downdraught.

There is no Yamaha spec, but I have some tuning info from Factory Pro that gives 9.5 mm. Check your needle valves first and replace if they show any ...

ThunderboltFMF wrote: Thu Apr 10, 2025 9:48 pm Does a 4XV or a 5JJ fit a 5PW?

Anyone know?

The 4xv and 5jj are different. The 5pw has injection so …login to view the rest of this post

If you have a constant 12V at the connector, it must be the clocks. That circuit only supplies backup power to the trip meters, nothing else.

Standard …login to view the rest of this post

That's weird, not sure what would cause the memory to fail the second time the key is turned on.

My experience has been similar to Malr1, that the hi…login to view the rest of this post

That's weird, not sure what would cause the memory to fail the second time the key is turned on.

My experience has been similar to Malr1, that the hi…login to view the rest of this post

They can only adjust air or fuel. If they are between the slide and cylinder it must allow more fuel from the floats. If it between filter and slide …login to view the rest of this post

They are downstream from where the air and fuel mix, so adjusting the screws affects the flow rate of the air/fuel mixture.

It's worth fitting #15 …login to view the rest of this post