CBR 600F 1987 - 1990 CBR 600F Forum

Just got bike, have some questions

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  #1  
Old 10-18-2007 | 07:39 PM
tds94probe's Avatar
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Default Just got bike, have some questions

hey all, Just got a 87 600 Cane and I have a few tech questions. I'm familliar with car's ect, work at a local shop here as a tech, but i've never really worked on a bike.

First one, When I attempt to push my bike its extremely hard to push. I mean i'm straining. And i'm not a small person. Whan i'm on my girlfriends bike i can push it like i'm on a bicycle. I thought the brake calipers may be siezed so i did a brake thru service on the brakes and still the same. Any ideas what this could be?

Second, sometimes at idle it seems like 1 cycinder is getting more fuel, the idle jumps intermittantly, takes less than a second for it to go back down though almost like a backfire but not quite as it doesnt exit the exhaust pipe, reminds me something like a chain saw idle jumping. Now My first thought was fire, but now i'm leaning more towards fuel.......or is this possibly the notorious CCT problem i've heard about?

And third just klinda curious, can i put a K&N Filter on without Jetting? It already has a Hindle Slip-On.

 
  #2  
Old 10-18-2007 | 11:39 PM
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Default RE: Just got bike, have some questions

1. Is it in gear?
2. Does the clutch work?
3. Is the chain too tight ?
4. rear brake?
5. Wheel bearings?
6. You should be able to push it in neutral or with the clutch pulled in, just like any other bike.
 
  #3  
Old 10-19-2007 | 02:46 PM
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Default RE: Just got bike, have some questions

Bike is in neutral clutch in, chain has slack but doesnt appear to be lubed in a while, not the rear brake tried it before i pumped the calipers back up, could be wheel bearings i suppose.
 
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Old 10-19-2007 | 03:57 PM
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Default RE: Just got bike, have some questions

if the chain hasn't been lubed in awhile, the links could be stiff, slack or no slack. have you tried putting the rear tire off the ground and spinning it. the wheel should make a few revolutions pretty easily before brake drag slows it to a stop.
 
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Old 10-19-2007 | 04:02 PM
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Default RE: Just got bike, have some questions

you may want to look at the carbs and ensure the throttle is snapping back as it should. there are small springs that keep the throttle for each carb consistent, i knocked one out during my engine swap and it caused it to go back down slow. it used to do that before we cleaned the carbs too, so it could also be a fuel delivery issue.
 
  #6  
Old 10-31-2007 | 12:34 PM
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Default RE: Just got bike, have some questions

ok with my rear tire off the ground I had to really force it to turn, but i pried the brake shoe off the rotor and it turned pretty dang good. but the caliper doesnt seem siezed, could a badly grooved rotor cause this pushing problem? Do Bike rotors warp?
 
  #7  
Old 10-31-2007 | 01:50 PM
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Default RE: Just got bike, have some questions

yeah, they can warp or the the caliper piston could be stuck in which case you would have to rebuild the caliper. it's very rare for the rear rotor to warp since a rider is taught to use the front brakes more. but it can warp from being worn thin or below it's service limitjust like automobile rotors.

you should check to see if the rear caliper is working properly, check the fluid reservoir. i found out last week that my rear brake wasn't working when i went to use it. i had to flush out the lines because of sludge buildup in the reservoir. i do a flush on the fronts every year but haven't touched the rear in 3 years. oops.

your problem sounds like a simple fix. at least it's not tranny related.

brake shoe? should be brake pad unless you have drum brake on your bike...
 
  #8  
Old 11-01-2007 | 11:39 PM
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Default RE: Just got bike, have some questions

Here is the easiest way to remove a stuckcaliper piston or puck.

Remove the caliper from the bike.

Drain all fluid out ofthe caliper and place the caliper in a soft jawed vice with the banjo bolt hole facing up.

If you don't have a soft jawed vice wrap the caliper in a towel and place in the vise so you don't bugger up the finish.

Fire upthe air compressor and grab your air nozzel with the soft rubber tip, insert the nozzels rubber tip in the banjo bolt hole and press down hard and give thecaliper a good squirt of air.

"Pop" one of the two pucks will pop out of the caliper, simply place the extracted puck back into the caliper and c-clampit in place and give the caliper another squirt of air and the second puck will pop out.

Remove the c-clamp and pull out the first puck, clean all parts in brake cleaner.

Lightly remove anyoxidation or gunk build up on the pucksusing a scotch brite pad and remove any gunk inside the caliper cylinders.

Clean up the caliper with brake cleaner, use your air nozzel and blow the caliper dry.

Coat the sides of the pucks with a light film of brake fluid and replace the pucks, they should push right in!

Then put the brake back together, pretty easy, takes a few hours and you save big bucks!!!!


 
  #9  
Old 11-03-2007 | 02:41 PM
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Default RE: Just got bike, have some questions

You rock, dude! Good advice! Don't know about setting fire to my air compressor though...!
 
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