07 CBR600RR Trouble cranking over....sorry, sorry, another one i know. - 600RR.net
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post #1 of 18 (permalink) Old 06-15-2008, 05:04 PM Thread Starter
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07 CBR600RR Trouble cranking over....sorry, sorry, another one i know.

so background...bought the bike used around mid-may with approx 4.5 on the odo. from a dealership. the bike had been sitting for awhile so the battery was dead, so they charged it before i took it off the lot. didnt have any problems with the bike/battery/charging system/starting it up until around a week or 2 ago when my dad tried to start it up and left the killswitch "on" for 2 or 3 nights.

anyways, tried cranking the bike up...gauge cluster turns on fine, speedo sweeps, fuel pump primes, kickstand down, bike in neutral, clutch in...etc. bike didnt even attempt to crank, just clicked and the gauge cluster flickered on and off.

anyways, charged the OEM yuasa battery with my tender overnight, measured 12.4 volts off the bike, cranked the bike up perfect. next morning, same problem. battery measured 12.4 still...bump started it, still measured 12.4 with the bike on.

still having the same problem i bought a used OEM battery on ebay from a bike that had 1k on the odo.

voltage checks out good with bike off/on. and bike starts up, but now instead of it cranking over instantly...it takes about 5 seconds to fully start up. it cranks really slow at first, then gradually gets faster until it finally starts...

tryin to narrow down the problem here, not sure where to start...R/R possibly? can anyone help me out?

thanks in advance guys, i know youll get to the bottom of my problem.

no mods, completely stock except for frame sliders and flush mount turn signals that were on the bike already when i bought it. had a small driveway fall with ZERO damage to anything outside, tiny almost unnoticable scratch on my left FS...im thinking possibly i damaged the R/R.

but anyways. sorry for the long post. just wanted to give u guys info. THANKS.

-brandon
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post #2 of 18 (permalink) Old 06-15-2008, 05:07 PM
 
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look up the how to on testing the battery with the engine running.

it should be reading a little higher than 12 when running

do you mean leaving the kill switch on the handle bar or the key switch.

the kill switch on the handle bar does nothing other than complete a circuit.
leaving it on always is not a problem
its the main key that turns on the bike.
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post #3 of 18 (permalink) Old 06-15-2008, 05:12 PM Thread Starter
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Quote:
Originally Posted by RShackleford View Post
look up the how to on testing the battery with the engine running.

it should be reading a little higher than 12 when running

do you mean leaving the kill switch on the handle bar or the key switch.

the kill switch on the handle bar does nothing other than complete a circuit.
leaving it on always is not a problem
its the main key that turns on the bike.
battery checks out fine with the engine running, 12.4 i believe...ill check it again in a little. and he just left the killswitch on the handlebar on...thanks for that info though i did not know that. the key was off.

wire short somewhere maybe?...bad wiring for the turn signals?

battery terminals are clean.
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post #4 of 18 (permalink) Old 06-15-2008, 05:18 PM
 
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should be near 13 at idle i believe right at 15 at 5000 rpms if i remember correctly.

the exact numbers and rpms to check are on here somewhere
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post #5 of 18 (permalink) Old 06-15-2008, 05:22 PM Thread Starter
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Quote:
Originally Posted by RShackleford View Post
should be near 13 at idle i believe right at 15 at 5000 rpms if i remember correctly.

the exact numbers and rpms to check are on here somewhere
gotcha...been reading a little more and if its still 12 volts at idle its not normal...will do some more inspecting with the multimeter.

thanks
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post #6 of 18 (permalink) Old 06-16-2008, 11:39 AM
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i'd say you may have damaged the R/R or the stator if you're reading 12.something volts with the motor running. the voltage at idle should be around 13 and a half VDC and closer to 15 VDC at 5000 with the high beam on. if it's not doing that, check the stator resistance. replace as necessary.
post #7 of 18 (permalink) Old 06-19-2008, 01:05 PM Thread Starter
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ok update, voltage is good. at operating temp it reads around 14.5 at 5k rpms with high beams on...so does that mean my stator is good? and if so, what should i move onto next?
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post #8 of 18 (permalink) Old 06-19-2008, 01:18 PM
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Originally Posted by quikkstylez View Post
ok update, voltage is good. at operating temp it reads around 14.5 at 5k rpms with high beams on...so does that mean my stator is good? and if so, what should i move onto next?
it's a good indicator that the charging system is in good working order. what was your idle voltage?
post #9 of 18 (permalink) Old 06-19-2008, 05:50 PM Thread Starter
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Quote:
Originally Posted by Knightslugger View Post
it's a good indicator that the charging system is in good working order. what was your idle voltage?

idle voltage at operating temps are as follows:

WITH HIGHBEAMS: 13.96v

LOWBEAMS: 14.06v

ive started the bike 10+ times since i first posted the thread, still the same problem.

sounds real weak, almost like its not even gonna start at all. then eventually after 5 or 6 seconds it fires up, and the tacho re-sweeps.
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post #10 of 18 (permalink) Old 06-19-2008, 06:18 PM
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regardless of the charge state of the battery?
post #11 of 18 (permalink) Old 06-19-2008, 07:01 PM Thread Starter
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regardless of the charge state of the battery?
correctamundo.
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post #12 of 18 (permalink) Old 06-19-2008, 09:07 PM
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you know, i had a similar case here where the starter would just

WWEEERRRrrrr.............WEERRRRrrrrrRRRrrrrr..... .............WWWWWWEEEeerrrrrr.....

the starter clutch turned out to be pretty bad and in need of replacement. I'm waiting for him to send word back to see if that fixed his issue or not... but his was pretty bad. maybe you should take a look at yours as well...
post #13 of 18 (permalink) Old 06-19-2008, 09:12 PM Thread Starter
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Quote:
Originally Posted by Knightslugger View Post
you know, i had a similar case here where the starter would just

WWEEERRRrrrr.............WEERRRRrrrrrRRRrrrrr..... .............WWWWWWEEEeerrrrrr.....

the starter clutch turned out to be pretty bad and in need of replacement. I'm waiting for him to send word back to see if that fixed his issue or not... but his was pretty bad. maybe you should take a look at yours as well...
where/how exactly can i check this bad boy out.
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post #14 of 18 (permalink) Old 06-19-2008, 09:14 PM
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you're going to have to pull the crank case cover. get the 2007-2008 manual from RayDog and if you're comfortable, dig in.
post #15 of 18 (permalink) Old 06-19-2008, 09:25 PM Thread Starter
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k reading over the manual now, dont think i wanna dig that far in..dammit.
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post #16 of 18 (permalink) Old 06-19-2008, 09:26 PM Thread Starter
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but why on earth would my starter clutch be bad already...its an 07


further proof that used stuff is no bueno.
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post #17 of 18 (permalink) Old 06-19-2008, 09:44 PM
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Sometimes you just never know what the bike's been through.
post #18 of 18 (permalink) Old 06-20-2008, 11:42 PM Thread Starter
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Sometimes you just never know what the bike's been through.
agreed

well..if your buddy finds out his problem let me know.
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