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**shan2306** · 05-02-2017, 06:40 PM

Re: Honda CBR 250R

Originally posted by leech View Post

Blackthorn that earlier question was about engine speed, this one is about going over fist sized rocks at first gear, steep uphill, where the rear of the vehicle fishtails and wheelspins when you give throttle at standstill. Those rocks are treacherous, too small to provide traction, but big enough to throw your bike away from the given steering input.

One Splendor got stuck in-between the rocks, and more throttle only made the bike dig deeper into the rock bed. He had to have his bike pushed up.

One Activa guy who tried negotiating the rocks ran off the trail into the mountainside. Bam. Lucky he didn't go to the valleyside of the road.

Sorry to quote this old post. I have faced the same situation day before yesterday when I rode to Gavi from Parunthumpara through a short cut which was showed in Google maps. God I was freaking out when I got stuck literally in middle of the hill road. I couldn't go above or down. The wheel was spinning and throwing off from the road when I give throttle. Finally I got down from bike and pushed bike kept it in first gear and applying slow throttle. [emoji36]

**shan2306** · 05-02-2017, 08:59 PM

Re: Honda CBR 250R

Originally posted by shan2306 View Post

The SHIM noise is still there. Previously it was felt after 100 ~ 200 KM ride, now it is there always. Planning to get it checked tomorrow.

Hi guys, I got my bike from SVC now. Had given at morning 8.30 and received now at 7 pm only. Bike feels smoother but the SHIM noise is still there. It is not audible while idling, but you can hear it when you give sudden acceleration. Mechanic at SVC told they have adjusted the SHIMS and no need to worry. If there is any problem they can clear it under warranty. Any advice guys?

**arvstreetracer** · 05-02-2017, 09:16 PM

Re: Honda CBR 250R

Originally posted by shan2306 View Post

Hi guys, I got my bike from SVC now. Had given at morning 8.30 and received now at 7 pm only. Bike feels smoother but the SHIM noise is still there. It is not audible while idling, but you can hear it when you give sudden acceleration. Mechanic at SVC told they have adjusted the SHIMS and no need to worry. If there is any problem they can clear it under warranty. Any advice guys?

Shan, better record an audio or video of the same and post here. Did your oil leaking issue resolve?

**s1d** · 05-02-2017, 09:20 PM

Re: Honda CBR 250R

Originally posted by shan2306 View Post

Mechanic at SVC told they have adjusted the SHIMS and no need to worry. If there is any problem they can clear it under warranty. Any advice guys?

shims cannot be adjusted. They are simply replaced if the valve clearances go out of spec. The noise that you say might very well be normal (I see a lot of folks expect certain acoustic characters from their bikes and not content how it usually sounds.. Call it nitpicking). Try riding another cbr250r or let someone else ride your bike to see if they notice something out of place. Sometimes Without actually listening to the sound, one cannot actually pin point the source.

----consecutive posts auto-merged-----

Originally posted by lalitp View Post

It is quite astonishing that you guys are replying to such an old post of mine. I don't even remember posting this and when.

ha ha

but never too late to learn something!

**B7ACKTHORN** · 05-02-2017, 10:35 PM

Re: Honda CBR 250R

Originally posted by Wilson4willy View Post

Sir clutch free play means when ever you would press the clutch, there whould be small gap initially and after that the clutch comes to work and feels hard. Same with the throttle though i.e initially when you twist the throttle, you would feel a small gap and after that throttle becomes hard and comes to work. That flat spot is called as free play.

Free play or slack it's called is the play that is required for some parts to reduce torque induced wear. Free play helps in may ways, it helps reduce constant contact of parts involuntarily. Rest was neatly explained by fellow bhpian a few posts back. But there is a fine line between excessive free play to no free play at all. So, the right amount is always mentioned in the manual and also can be adjusted to individual's taste.

Originally posted by shan2306 View Post

Hi guys, I got my bike from SVC now. Had given at morning 8.30 and received now at 7 pm only. Bike feels smoother but the SHIM noise is still there. It is not audible while idling, but you can hear it when you give sudden acceleration. Mechanic at SVC told they have adjusted the SHIMS and no need to worry. If there is any problem they can clear it under warranty. Any advice guys?

This is a "snake oil" dialect spoken by most SVCs to an innocuous customer. Only tappets can be adjusted, shims can only be replaced. Though shims can be "inspected"for their clearances, they can't be adjusted, if required. That's the only drawback of motorcycles with shims. Though their advantages far outweigh the old school screw type. Rest is as explained by folks here. One suggestion I would like to make is keep a track of this issue, if you feel constant stitching sound from the engine and coin jingling like sound throughout the rev range and consider checking with other bikes too and if you're sure your sound is significantly differing from other bikes, a shim replacement can be considered.

And also, CBRs are notorious for having cam chain tensioner issue wherein the cam develops some play, even on new bikes and can cause strange noises.

Cheers!
VJ

**shan2306** · 05-02-2017, 11:08 PM

Re: Honda CBR 250R

Originally posted by arvstreetracer View Post

Shan, better record an audio or video of the same and post here. Did your oil leaking issue resolve?

Sorry I couldn't record it since there is no SHIM noise when vehicle is idle. I think I have to wait till second service which will be at 6000Kms to clear this issue.

**shan2306** · 05-02-2017, 11:10 PM

Re: Honda CBR 250R

Originally posted by arvstreetracer View Post

Shan, better record an audio or video of the same and post here. Did your oil leaking issue resolve?

The oil leakage issue resolved by replacing the washer.Thank you.

**shan2306** · 05-02-2017, 11:12 PM

Re: Honda CBR 250R

Originally posted by s1d View Post

shims cannot be adjusted. They are simply replaced if the valve clearances go out of spec. The noise that you say might very well be normal (I see a lot of folks expect certain acoustic characters from their bikes and not content how it usually sounds.. Call it nitpicking). Try riding another cbr250r or let someone else ride your bike to see if they notice something out of place. Sometimes Without actually listening to the sound, one cannot actually pin point the source.

----consecutive posts auto-merged-----

ha ha

but never too late to learn something!

True. Will wait till second service.

**arvstreetracer** · 05-02-2017, 11:12 PM

Re: Honda CBR 250R

Originally posted by shan2306 View Post

Sorry I couldn't record it since there is no SHIM noise when vehicle is idle. I think I have to wait till second service which will be at 6000Kms to clear this issue.

If there is no shim noise when vehicle is idle after running some 20km, then you don't have shim issue. You must be listening something else.

**shan2306** · 05-02-2017, 11:14 PM

Re: Honda CBR 250R

Originally posted by B7ACKTHORN View Post

Free play or slack it's called is the play that is required for some parts to reduce torque induced wear. Free play helps in may ways, it helps reduce constant contact of parts involuntarily. Rest was neatly explained by fellow bhpian a few posts back. But there is a fine line between excessive free play to no free play at all. So, the right amount is always mentioned in the manual and also can be adjusted to individual's taste.

This is a "snake oil" dialect spoken by most SVCs to an innocuous customer. Only tappets can be adjusted, shims can only be replaced. Though shims can be "inspected"for their clearances, they can't be adjusted, if required. That's the only drawback of motorcycles with shims. Though their advantages far outweigh the old school screw type. Rest is as explained by folks here. One suggestion I would like to make is keep a track of this issue, if you feel constant stitching sound from the engine and coin jingling like sound throughout the rev range and consider checking with other bikes too and if you're sure your sound is significantly differing from other bikes, a shim replacement can be considered.

And also, CBRs are notorious for having cam chain tensioner issue wherein the cam develops some play, even on new bikes and can cause strange noises.

Cheers!
VJ

Thank you for the info. Will wait and see after putting some mileage.

**arvstreetracer** · 05-02-2017, 11:16 PM

Re: Honda CBR 250R

Originally posted by shan2306 View Post

The oil leakage issue resolved by replacing the washer.Thank you.

Washer or oil seal?

**shan2306** · 05-02-2017, 11:16 PM

Re: Honda CBR 250R

Originally posted by arvstreetracer View Post

If there is no shim noise when vehicle is idle after running some 20km, then you don't have shim issue. You must be listening something else.

Will check that

**manjuadiga** · 05-02-2017, 11:42 PM

Re: Honda CBR 250R

Dear friends, i m facing front disk brake locking problem since last 10 days. Front wheel is getting jammed while running itself with brake lever becoming tight. After bleeding it will be alright but after sometime or 2-3 days it will lock again. I'd shown to asc but no use. They say its because of high disk fluid level. I usually check the level by putting the bike in straight up position but they say keep it on side stand if its less than low level then only need to refill. Really dont know what to do. Please help me out. Disk pads are new and no problem with disk rotor. Using Honda dot3 brake fluid. Usually during summer hot afternoon it is the major concern

**B7ACKTHORN** · 05-03-2017, 06:45 AM

Re: Honda CBR 250R

Originally posted by manjuadiga View Post

Dear friends, i m facing front disk brake locking problem since last 10 days. Front wheel is getting jammed while running itself with brake lever becoming tight. After bleeding it will be alright but after sometime or 2-3 days it will lock again. I'd shown to asc but no use. They say its because of high disk fluid level. I usually check the level by putting the bike in straight up position but they say keep it on side stand if its less than low level then only need to refill. Really dont know what to do. Please help me out. Disk pads are new and no problem with disk rotor. Using Honda dot3 brake fluid. Usually during summer hot afternoon it is the major concern

Front brake getting jammed can be due to worn piston seals which means the pistons are not expanding and retracting properly, and it's not the same old BS that the service center due to high brake fluid. I mean, the fluid reservoir hardly takes in 100 ML, so don't take their word for it. The fluid reservoir is designed to take the maximum and that's how it should be filled to the right spec.

Check your front fluid reservoir piston assembly, if it's jammed there are chances that the brakes would engage due to non-return of the plunger piston. There is a master cylinder service kit available especially for Bybre brakes. If the brake lever isn't springing back as it normally would, check your caliper piston for seizure and or damaged piston seals/o-rings.

Cheers!
VJ

**shan2306** · 05-03-2017, 11:33 AM

Re: Honda CBR 250R

Originally posted by arvstreetracer View Post

Washer or oil seal?

Oh sorry the seal.

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