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don't be so sensitive. most of the issues here ARE self inflicted. are you not reading the forum? most of the advice on here is bad or misguided as well. if you read the posts here and disagree with this then you're not paying attention.


and yes, i tell people in a blunt tone in real life. if you ask a question you'll get an answer. it's how i am. and no i don't get offended if someone calls me stupid. especially if i'm being stupid. who cares?
 

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Bought the R/R from Rick's Motorsports. So far so good.
Obviously I can't full on road test it as there's snow here now. But my resting voltage is high 12's. My charging voltage is 14.35.
 

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2003 CBR600rr Starting Issue

Symptoms: Initially the bike started fine. Turning it off at or above 200 F and trying to restart would not work. The bike would have a few weak cranks before completely shutting down (clock and miles reset). This problem eventually got worse, as the motorcycle wouldn’t start even when cold.

Trying to diagnose the issue: Some of the forum posts were helpful. The suggestions that I found were 1) replacing the battery 2) replacing the regulator/rectifier 3) inspecting and cleaning the starter 4) cleaning the grounds.

What I did: Not wanting to spend too much on a good regulator/rectifier without knowing what the problem was right away, I decided to attend to the easy options first.
  • Voltage tests on the battery indicated that it was no longer holding a full charge. I purchased at ~ $40 battery from amazon (Mighty Max YTZ10S 12 V 8.6 amp hr) but decided to take a look at the starter and clean the grounds before potentially subjecting a new battery to undue strain.
  • The starter was a bit more difficult to get to than the CLYMER manual had led me to believe. After taking the left side fairings off, disconnecting the fuel tank and coolant hoses it was finally accessible. A bit of force was needed to slide the starter out (I’m pretty sure that this has been the first time the starter has been touched since the motorcycle was built).
  • I took the starter apart and cleaned it out with some careful WD-40 application and then applied dielectric grease to the electrical connections. As you can see, there was some carbon build up from years of use. The starter passed all of the electrical tests suggested by the service manual.
  • While the motorcycle was opened up, I decided to clean all accessible coolant hose connections and replace the gaskets (this also probably hadn’t been done in quite some time – the gaskets had been pressed flat).
  • I put everything back together, cleaned the open electrical connections/grounding points, put in the new battery and replaced the coolant with some nice genuine Pro Honda HP Coolant (why not at this point).
  • Finally, I tested the regulator/rectifier as shown in the service manual. It passed the electrical tests.
This seems to have fixed my problem (even when driving in traffic on a hot day for 40 ish minutes and then turning the bike off/on). The motorcycle has been fine for over two months, and I’ve put on about 1,000 miles since then.
 

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Hi everyone,

I bought 3 weeks a go a cbr 600RR and have the same issue.

RR wont work when it is hot. When I press the start button when its hot, the system is recovering itself.

By a cold start it works fine. And after 20 minutes of rest it works also fine.

First I will check the voltage of the battery before and after the start and follows the steps of Jules03.

I am new with bikes. I have for 1 month my driving license now. Hope i can fix it.

Greetings from the Netherlands!
 

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The problem is a mix with battery and starter motor I think. Now I change the battery, it looks like the problem is solved. The motor wil work also when it is warm.
There is only one thing that is not good. When te motor is warm and I turn it of. By turning on the first time it wil give al the energy to start. After I start ones the next startes are no problem. I think the starter motor must be cleaned or replaced. But i could not find the starter motor to clean it.

For now it works fine. Maybe i will fix it later when the problem get more trouble.
 

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The problem is a mix with battery and starter motor I think. Now I change the battery, it looks like the problem is solved. The motor wil work also when it is warm.
There is only one thing that is not good. When te motor is warm and I turn it of. By turning on the first time it wil give al the energy to start. After I start ones the next startes are no problem. I think the starter motor must be cleaned or replaced. But i could not find the starter motor to clean it.

For now it works fine. Maybe i will fix it later when the problem get more trouble.
Hi Sergio06,
I would recommend cleaning the starter motor, especially if it is an older bike. At worst, its some TLC that your bike will appreciate. Others have had success replacing the regulator/rectifier with one from a newer bike (although I believe that it was only the 03-04 models which had issues with these). I've read posts of people replacing the battery and having the problem "fixed" for a few months, but then it comes back.
What do you mean by not being able to find the starter motor? Did you take the left side fairings, fuel tank and coolant hoses/thermostat housing off? It's pretty hidden under all of that, but once you have removed all of the clutter it should be easy to see.
 

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Hi Jules03

Thank you for your answer.

I have a CBR 600RR of 2005. It is at 27000 km. And I recently fall at my left side omg. But the damage is not much. Is the startormotor under the tank? Because i I recently change te oil and remove the coolant but didnt see the startermotor. It could happen that the problem comes back later. I hope not.

I will clean the startermotor meanwhile and hope that the problem is solved with cleaning.
 

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Yes, it is located under the tank. As you can see in the 2nd and 3rd pictures, I removed the left side fairings, the seat, the tank and the coolant connections. When you remove the tank, take note of how the fuel line was positioned and connected to the tank. It's easy to install it in the wrong orientation, causing you to pinch or overstretch the fuel line.

1st picture: The metal cylinder under the hoses/cables that the arrows are pointing towards.
2nd picture: The starter is not actually seen, but the arrow gives you an idea of its location. It's pretty deep in there.
3rd picture: A side view from the left side of your bike after the thermostat housing and water joint has been removed.
 

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