Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Ok. Found this post after replying to your PM.
Yes, this is the correct arrangement of o-ring and washer. The o-ring must be at the tip, I dont know from where Rohit got that picture.
Idle adjustment screw does not have any o-ring.

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Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

What a relief ! As you can see , I'm up at 5am just to see if you replied .
Got your pm too , does the o-ring need replacement every service ? mine is intact . Glad that I did find it , else I'd had flushed that hole with carb-cleaner , with o-ring and all .

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Good Mr. detective you found that.
That oring is completely damaged. Replacement required, highly recommended. It do come separate. I have bought for my bike two times before. Somewhat for rs5 from ASC. It is damaged due to over tightening the air screw while adjusting. It doesnot require replacement every time. If get separately then buy 2-3 more pieces for your stock because these small pieces doesnt always available.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

It is good to purchase hero labeled splendor and there are 3-4 models in splendor can any one tell me which one I have to purchase.

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Re: Hero Moto Splendor/Joy/CD-Dawn/Passion


Why would you open the carburettor in every service, and i don't think there is any need for replacing o-ring at every service, if it's damaged,like torn, or blistered then ofcourse one should change it.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Nahi brother , I meant whether it needs to be changed everytime the carburetor is opened for service . Not everytime bike is serviced . I never touch carb for general service . I don't even do general-servicing of my bike ever , for that matter
However Hero owners manual says Carb to be adjusted every 2000kms , and cleaned + adjusted every 4000kms .

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Hi Everyone,

I was too messed up with studies and DIY to respond to the solutions suggested by the experts regarding the "4T oil leaking from spark plug opening" issue.
I stocked up on all the parts required for the rebuild such as valve oil seals, piston rings, Cylinder & Piston kit, packing and o-ring kit. However the 4T oil burning turned out to be a false alarm as it was the spark plug which had its crusher washer busted and needed replacement and the oil was just the lubrication oil accidentally spilt near the plug.
I now have cleaned the air-cleaner element and replaced the spark plug with one suggested by Pinaki Sir(G-Type) and all seems in place.
Since last week though there has been a few niggling issues keeping the CD100 from running freely. There are 4 issues:

1.> Drive Chain slack adjustment . The drive chain was last changed at about 15k kms ago and it seems really frustrating as the change interval is mentioned as 23-25K in manual.
I am not sure whether i have missed out on some key points while adjusting slack.

2.> Valve clearence adjustment. I have never ever touched this part though it has been detailed in the owner's manual. (Need insight on this)

3.> Suspected wear in clutch/Friction/Steel plates as there is enough free play in lever and transmission seems notchy when gear lever is deployed(a light vibration felt)
and slippage too. but again this is not very predominant so not sure. The bike has run for more than 40K without swapping the clutch plates. My gear shifts have always been smooth so could be the reason for the extended run.

4.> Oil filter screen. This is also mentioned in the Owner's manual and is very much subject to periodic inspection and clean. I have not touched this part too as i never experienced any issues in 4T oil circulation in engine sump, however this could be the reason why the engine oil gets sooty after 1800kms.

I need advice on all the above parameters and have attached pics relevant to them.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

No fret brother . My humble suggestions -

1 . forget the book . Get the chain adjusted from any local mechanic . Every fortnight dip an old toothbrush in 90 gear-oil and lube chain with it . You need to remove the bottom part of chain cover only - 2 number 10 nuts . Baas .

2. If you suspect the clutch plates , have them replaced . Clutch plate set is quite cheap . Go to a good Hero ASC nearby to you and they shall do clutch plate replacement , rotor filter clean , oil screen filter clean and tappet adjustment for you - all at once . labour charge at ASC for all these should be around Rs 200 total . Plus cost of a) clutch side gasket b ) clutch plate set c) one bottle Hero oil - thats it .

3. Try to observe how the ASC mechanic does these jobs - and next time you shall be able to do them by yourself . You just need to see it once - it's that simple .

4. All our engines make oil very dark and dirty in around 1500 kms of use . It's a normal fuction of the oil - to clean and absorb engine effluents and hold it in a suspension . Not any problem in this . Just replace the oil in 2000 and all is well

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion


All right bro, yeah you are right why to mingle with carb when it's running right, every manual suggest carb cleaning and adjusting between a particular time frame but i feel this is just a game which company tries to play, they know that by opening the carburetor sooner or later something will get damaged and you then you have to change that part, like these small o-rings, and spring, by this way spare parts division will also be busy by making spares and cash will also keep flowing.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Yes it is absolutely excellent to buy Hero labeled splendor, infact any hero product as they are best in quality. I would suggest you to buy splendor pro with spoke wheels and self start.No need of adjusting the carb and cleaning so frequently. Just regular normal servicing will do. In all my bikes i do a major servicing every 10k kilometers, which involves changing the front shock oil, cleaning the chain, cleaning the engine and underside with kerosene, changing the engine oil, cleaning or changing the air filter, lubricating the chain and refitting back, cleaning the brake and also checking the cables and all.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

I am also thinking about passion pro because it has more comfort and i have not ridden any bike except bajaj.can the mikeage of passion is same as splendor pro and why not i have to purchase cast alloy splendor.....can i look at the honda dream neo because my requirement is mileage(60kmpl minimum),reliable,comfort

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Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

In the current lineup of hero - I just love the HF-dawn , maroon colour . If going for a current Splendor , my choice is also the Splendor-Pro , spoke-drum-kick version . I don't like self start
Remember that to get a spoke wheel Splendor , you may have to fight with the hero showroom . They simply don't want to sell spokes .

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion


Dream neo will easily give you 60km/l mileage the only issue is the poor after sale service, if you can solve this part then go for it, but why are you not looking at passion xpro, has got the same engine that of neo, plus a lot better service network.

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Is it necessary to change the fork oil at every 10k, kilometers, some mechanics says that the fork oil should only be changed once they start leaking with seals ofcourse, otherwise there is no need to put fresh oil with old seals.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Ya you can go for passion pro and it will give easily more than 65+ kpl. But why not go for passion xpro as it has the 110 cc from twister retuned for more torque and bike is bigger in size and also build quality is far better than Drean NEO. Also comes with disc brake as option and returns 65 kpl in city.Changing oil every 10k keeps the shock performing like new without build up of any sludge. Not changing the oil will only cause the oil seals to leak. My extreme is at 40k kilometers and still the oils seals are the same that came from factory. Even my Joy has thinner oil seals but they last 30k before changing. Its all because of regular oil change.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Thanks bro for your advice.

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