Re: Honda CBR 250R

it will sound rough for some time. make sure you idle the engine for a minimum 60 seconds for the first start of the day and then followed by 20-30 seconds every start after that. also idle the engine for 10 seconds before you hit the engine kill switch. just a good habit and will keep engine in good shape.

check the clutch free play if gear change is getting difficult. also by default i found the gear lever to be high as i am 5.11 and for my riding posture i had to pull out the gear lever and set it down by 1 teeth. that will help in better gear change.

engine is new and hence more friction and more engine braking....

Re: Honda CBR 250R

fins are delicate and also pressure of water in service centers are too high.. do prone to bending..

Re: Honda CBR 250R

The fins are delicate but not so that they will get damaged by water at a reasonable (read municipal corporation) pressure. High pressure like is found at workshops will dent the fins.

I practise and recommend the following steps to clean the radiator:

1. Pour water from normal pressure pipe on the radiator to soak the dried up slush and mud for about 30 min.

2. When the dirt has turned all gooey, gently scrape with a NEW, SOFT or MEDIUM bristled tooth brush, dipped in soapy water, BETWEEN the fins to dislodge the mud. Repeat process for all affected fins. The soapy solution allows the bristles to glide smoothly over the fins preventing scratches and bending and also cleans the mud off easily.

3. In between, apply the normal pressure hose to let the mud dribble down to the ground (something like you drooling looking at a hot pic/a burger/an ice cream, as per your inclination)

4. Increase the pressure a bit by squeezing the tip of the hose so that the mud at the rear of the fins also moves off. Take care to not increase pressure to a point where the motor of the fan gets soaked in water resulting in a probable short and/or dent the fins.

5. When the fins are clean, clean the tooth brush, soaked in soapy water and again repeat the process to finalise the unblemished fin surface, aiding in cooling.

6. Finally, same medium pressure hose to wash off the soap. Inspect for any remainder dirt or dented fins. If fins are dented, move them back into position with a narrow yet stout needle, the same type used to stitch quilts. Even thin forceps (raid wife's/GF's/chem lab beauty kit/store for this) can work wonders to straighten and align the fins perfectly. (I used my wife's forceps after which she bought me my own hehe)

7. Dry bike in shade and ride ahead.

Re: Honda CBR 250R

[MENTION=51754]theironhorse99[/MENTION] i guess we had a discussion about chain life right ?
Just took a pic of my chain at 13k kms.




Cheers
Ride Safe
Krishna

Re: Honda CBR 250R

this thing will easily last another 4-5k without a glitch. the teeths are good and chain seems to be in good shape too. all you need to check is freely rotate the wheel and check for slack. if its even you are good. clean it will with diesel before next chain lube spray.. rains coming.. you'd find it rough ..as with all the grime it will become a magnet for dust/debris causing irritation and unwanted vibes..

Honda CBR 250R

Thank you sirji for the in depth How To instructions.
Due to the lack of a tap in my parking I had to resort to a simple bottle spray to clean the radiator but I didn't use any soapy water in the process imagining that the soap might get mixed with the coolant somehow..!!!
The result was the radiator looked cleaned when wet but after drying off again the dirt was back on the fins..:-(

PS: I used a oralB tooth brush...because they are the smile expert..:-P

Re: Honda CBR 250R


Indeed, this is after a 600kms ride from home town to bangalore and in extreme dusty conditions.

Cheers
Ride Safe
Krishna

Re: Honda CBR 250R

Soap mixing with coolant? Haha. The radiator finds do the exact same job that the cylinder head fins on an air-cooled bike - heat exchange.

The radiator is a sealed assembly. The solid fins are finely welded to a network of hollow tubes. Channels in the engine carry the coolant coursing thru the engine, driven by the coolant pump. This coolant, which is at a significantly lower temp than the engine, leeches heat into it and comes close to vapour point (boiling) on being heated so much.

Still driven by the pump, this very hot liquid coolant reaches the radiator where it circulates thru the tightly packed network of pipes. Here, the hot coolant comes into contact with a huge surface area - the fins welded to the pipes. Heat is now leeched by the fins out of the coolant gradually till the coolant reaches a reasonable temp. And the process carries till engine off.

Thus, the radiator does dual duty:
1. Exchanges engine heat to the outer environment thus preventing engine damage and
2. Prevents the coolant from vaporizing by cooling it to a temp where it still stays a liquid.

Pardon the tutorial but I thought ie would clear your doubts. Water will not get mixed with the coolant even in case of a minor leak in the system as the slightly higher pressure will instead force coolant out.

Bent fins are okayish up to a point. The real danger begins if they tear at the base or top from the under or over tube.



Wireless biking

Re: Honda CBR 250R

Almost out of slack adjuster..

Re: Honda CBR 250R

The radiator fan is doing its job. It kicks in when the temp gauge climbs to 3 bars and the gauge has never gone beyond that.

I've been idling the engine for 60-90 secs before riding the bike.

The first two gears are a little tricky for city riding as I need to continuously switch between the two to avoid over-revving and/or lugging the engine. The gear pedal seems ok to me but the clutch lever feels a little too far from the handlebar. My left hand starts paining after riding for about 15-20mins as I have to stretch my fingers to get a good grip on the clutch lever. Is there a way to adjust it so that its closer to then handlebar?

Re: Honda CBR 250R


Ah..!! The infamous gear dance, the thing is for some time this is going to be bothering you, until you get used to it. About the clutch, the setting can be made, take it to the svc, but then the clutch might get a bit tighter.

Cheers
Ride Safe
Krishna

Re: Honda CBR 250R

Great!!
Always wanted to do a google search for cooling system working..!!
Now I know.. Thanks..!!!
Now I won't get so irritated when the radiator fan kicks in...I'll know what all things are going on in there.


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Re: Honda CBR 250R

While cleaning the bike today, i noticed a patch (about the size of my palm) on the right top side of the tank which was of slightly different colour than the rest. Could it be discoloration of the tank paint?

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Re: Honda CBR 250R

Try pushing for a warranty claim, paint fading on a brand new bike is very unlikely.

Do not do petty patch up works, it will make it worse.

Cheers
Ride Safe
Krishna

Re: Honda CBR 250R

My bike had similar issue while I was taking its delivery. I noticed outside of showroom in dark (evening time). I asked them, and they assured to replace the tank a few days; which they did. However there were many other things (scratches, defective rvm body, missing screw/clips, etc.) I couldn't notice in evening time, only noticed in next morning.

Honda two wheeler service quality is pathetic, of course there are some exceptions (a few service stations). Even PDI for new bikes is not done properly, you have to be there to make sure of things using whatever knowledge you have. However, even experienced riders miss many things because of excitement.

You can ask them to replace, it's a defect. Insist until they do.

I don't think, even honda two wheeler HQ cares about customers. Unlike honda cars, we don't get survey calls to provide feedback on quality of service. Even if you send feedback via email or twitter, they never respond or reply.

Wondering, what's best way to get HMSI pay attention on their service network? Does HMSI audit service station to make sure standards and guidelines are being followed?






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