A friend of mine just bought a 400 sport. It has been sitting untouched for 2 years, and now the brakes have no pressure and don't work. Where is the reservoir for the brake fluid?
Also he said the rear disk isn't on the axle, but more forward on the swing arm. If this is the case, what does the disk hook to to stop you?
He called me lastnight with these questions so I can't see the 4 wheeler. I have 2 Scramblers and thought they would be the same, but apparently not.
Any help would be great!

Colin

 

The brake reservoir is on the top of the left handlebar just like Scrambler and the rear disk Is actually connected to the Gearcase. How It stops I have no idea, just going by what I see on Partsland.com. Maybe It brakes at the transmission instead of the axle?? I too have a Scrambler and thought they were the same, but huh, guess not. Hope this helps.

 

The disc on the axle is a newer design, started on most machines in '99 I think. I had a '96 Trail Boss with the disc on the tranny. I just spins with the sprocket and the brake stops it there since the chain will then stop the axle. I'm not sure if the sport is the same, but the foot brake on mine was not hydrolic. It must be adjusted by some bolts like any other manual braking system.
I would change the fluid first in the hand brake. Open the cap on the master cylinder (hand brake) then open the valves on each of the three disc brakes. Pump the brake handle and all the fluid will run out. That fluid can take paint off so you might want to catch it with rags. Once empty, close all the valves and fill the master cylinder with DOT 3 brake fluid. Pump it a few times and lots of air will come up. It will get fairly solid by itself if the master cylinder is in good shape. Now squeeze the handle and keep pressure on it. Open one valve on the brake farthest from the master cylinder and close it. Do the same on the other brakes, moving closer to the master cylinder. This removes air from the lines. Repeat if the handle is still soft.

 

Polaris power is right on the bleeding, start from the farthest and move to the closest. The rear brake is all mechanical in operation from the pedal. If they need adjusting you loosen the lock nut on the bolt sticking right out of the middle of the caliper and turn the middle bolt down until the pedal catches about 1/3 of the way down or whatever feels right for you. Just dont get it too tight. That will let the rears work better also by the handbrake since it ties in as well.