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Foot brake not working

60K views 12 replies 10 participants last post by  FriscoNelson 
#1 ·
My foot brake does not work on my 700. It goes right to the floorboard without any intentions of working.LOL

What do I need to look for to fix this problem?? I like having a foot brake when I need it even though I don't use it that often.

Thanks in advance.
 
#2 ·
Mole:

I had a 2004 700 and the foot brake worked on it for about the first year and then it started getting weaker till it finally didnt work at all !! I heared that they had trouble with the rear master cylinder and that their was a few quick fixes like putting a brick on the foot brake overnight I tried it and it didnt work just like all the other ones !! The only thing I know to do is get a new master cylinder !! People told me the reason it didnt work was because I didnt use it enough but the 2004 sportsman you had to put the rear brake on to get it to go into high range and reverse so I used it plenty !!
 
#4 ·
I've had four of them go out on my SP800. Two were replaced under warranty, I replaced one myself (back when Ridgerunner sold the parts cheap), and now that one is dead too. So I have one out of the machine to play with if I ever remember to dig it out and see if I can disassemble it...

Rob
 
#5 ·
had this issue on my scrambler was told by the dealer that the master cylinder had blown a seal I spoke to some friends and they said that was hard to do try bleading the brakes, so I did and works good as new so try that.
 
#7 ·
I've been too lazy to mess with the brake here lately. Maybe this weekend.:)
 
#8 ·
Since I'm riding the Rubicon Trail this weekend with some friends, I had a renewed interest in my footbrake.

I pulled the original out of a box and was examining it. I couldn't see how to get it apart, but there's gotta be a way. I decided to try swapping back onto the quad just to see what would happen.

So I did... and started pumping the pedal, checking the fluid, to see if it went down. It did a little, then stopped. Then it dripped a little from around the plunger, so I think the seal on that one is bad.

So I picked up the one I just removed and pushed the plunger and just missed being hit in the face by fluid. Hmmmm..

I put the old one back on again. This time I hooked up a plastic line to the rear brake and cracked the bleeder. I added more fluid and pumped. And pumped. And pumped. And added fluid. And pumped some more. Finally when I saw no more bubbles in the plastic, I closed the bleeder. I added a little more fluid to the proper level and closed the cap.

Then I tried the pedal. FIRM!!! Holy cow. Did I just fix my rear brake???

So we'll see. I didn't put the rest of the quad back together; I'll wait a day or so and see if it bleeds down.

Rob
 
#9 ·
Mine doesnt work that well either, I am not so sure that Polaris designed it to "work" as well as we all think it should. I think they wanted the hand brake to be 98% of the brakeing input.

Thats just my two cents, could be wrong, I have been before.
 
#12 ·
Question

So my rear brake works on my 2007 Sportsman 800 but only when I used the hand brake, is the handbrake supposed to activate all three brakes? I replaced the master cylinder with a cheap aftermarket part, then blead the system, then refilled and got all the air out of it. So why is it still not working?
 
#13 ·
Yeh fellers a guy is also having problems with his rear brake on his 2002 Polaris 325 trail boss. A guy went a blend the brakes and thought that would get rid of the problem, but it didn't. I might change the line to see if that changes the problem, but I know the line isn't clogged because the foot brake doesn't fight me. What would be a solution to fix this?
 
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