Yamaha Gladiator SS stops when it's raining.

1. Find the back brake reservoir.
2. Fill it full if under the minimum line.
3. Use a No.8 spanner to loosen the bleeder valve slightly.
4. Pump back brake several times until it becomes a bit hard and hold it there.
5. Open the bleeder valve letting the brke fluid out and at the same time press the brake till it stops.
6. Hold the brake where it stops and close the bleeder valve.
7. Do this 2 - 3 times to ensure there is no air bubbles in the system and make sure your reservoir are.alays topped up to maximum level.
8. Make sure bleeder valve is close tightly after beleeding process.
9. Off you go. Cheers

hi sandeep; http://www.youtube.com/watch?v=QR6pGeF-Zw4
pls go through the vedio

The sound is being caused by something mechanical. It is not likely to go away by it's self. It will probably get worse. Don't wait for the next service. Take it in now before any more potential damage can be done. Check the oil level in the gearbox. It could be low.

I'm going to need more information on this problem