Tag Archives: KnowItAll I

KTM TPI STARTING RACKET: MR KNOW-IT-ALL

Dear Mr. Know-It-All,

I have a 2020 KTM 250XC-W TPI, and I’m concerned about a noise that it makes when I press the starter button. I have already replaced the clutch pack and the Bendix, but that hasn’t solved the issue. I’m wondering if the problem could be with the starter. Can you please help me?

Robert
via [email protected]

Noises from the starter system can be quite alarming, but they are more common in the 2008–2016 models and less so in the newer 2017 and later models. The clutch pack replacement you did is unrelated to the starter system, so it didn’t have any effect on the noise issue. Starter motors usually don’t make noise unless the bearings are failing. You can check the bearings by removing the Bendix and manually spinning the starter motor. If the bearings feel rough, it’s time to get a new motor. It’s worth noting that the motors have a notched feeling due to the internal magnets, so they don’t spin freely. The most likely causes of the noise are the Bendix and starter motor support bushings in the cases. Take a close look at them and replace any that have worn Teflon coating. Enjoy your rides, and thanks to Slavens Racing for providing the necessary information to address this question accurately.

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CHAIN BREAKER: MR KNOW-IT-ALL

Dear Mr. Know-It-All,

I recently experienced a broken chain when I was far away from my truck. Do you have any advice for this situation? It was a terrible experience because I didn’t have any tools to fix it, and no one in my group had a tow strap. My friend used his leg to push me, but there was a lot of sand. Now, I think my friend hates me! It took us hours to get back.

Stewart S

via [email protected]

I’m going to be completely honest with you, Stewart. The majority of chain problems are caused by the lack of maintenance and failure to replace worn-out parts. You should inspect your driveline after every ride to check for wear on the links, excessive stretching, and degradation of the masterlink. By inspecting the links, you can assess the condition of your chain. Worn plates indicate significant usage and the need for a new system. This includes replacing both the front and rear sprockets! Don’t take shortcuts, and one last piece of advice: Always carry a tow strap, a mini chain breaker (Motion Pro offers these), and a spare master link!

If you don’t mind showcasing your mistakes to the world, we won’t deny you the opportunity. Send evidence of your failures to [email protected] or Mr. Know-It-All

Dirt Bike P.O. Box 957

Valencia, CA 91380-9057