Re: Honda Dio, Activa and Aviator

Hello Everyone,
I have a Hero Maestro and recently I've noticed a strange problem. I found some oil in the Air Filter box. The oil was present on the hose that takes air to the carburetor and also on the filter element. Also the filter had a smell of gasoline. I do think that that the oil had come from the PCV pipe but still not sure why. Also there is a problem of oil being reduced to 200-300 ml after riding the scooter for about 1000 kms. There is no smoke from the exhaust. The soot deposits on the exhaust is dry and the spark plug also came out pretty good. So I hardly suspect the valve guide seals and the piston rings. There was very small leak from the drain bolt so applied some RTV gasket maker and the oil was still reducing. So checked the head cover and found that there was small leak from the head cover too (although the head cover gasket has been changed 3 times). Applied the same gasket maker and let's wait for the results. Did some topup of oil along with the topup of gear oil which also was leaking due to old washers.
Also the choke cable was all rusted and snapped one night when I was trying to force it back to off position. Since I had a new choke cable with me I tried installing but was unable to do so as the floor board made it impossible to properly route the cable from the front to the back. But I did noticed that the choke was in off position. So i removed the old cable and since then the scooter is running rich. Isn't the default position supposed to be off? I will post the pictures of the carburetor soon.
Also when I run the scooter at 40kmph I notice that it feels like the clutch is slipping a bit. I've replaced the CVT belt at 25300 kms. The current odo reading stands at 34000 kms. It has been about 10000 kms when the transmission was last cleaned. So I guess it needs a cleaning. By the way any idea which rollers can be used for Maestro? The engine is same as that of Activa albeit in a different state of tune. I found these on HGPMART-

But these are not recommended for Maestro. So should I use them or use the ones for Activa?
The last part is the rear brake. It somehow lacks the bite. I know the feel and feedback from Maestro's brake isn't as good as Activa's but somehow when I got my rear brake shoes changed at 25300 kms they became even worse. No matter how tight the brakes are they won't let the tyre skid under any circumstances. This wasn't the case before the brake shoes were changed. Recently changes the brake shoes again myself and problem still persists. I guess the drum is now gone. Any idea how to check the drum and where can I find one online?

Re: Honda Dio, Activa and Aviator

Engine oil.. any good branded (motul, shell, castrol) 20w40 or 10w40 will do(or even a 10w30). The regular NGK plug is around 65rs, the platinum or irdium variants cost more. the regular plug part no is cr6hsa iirc for the 102cc engine.. i've been using this plug for a few years now. no issues. a few of them were sent to me by fellow forum member [MENTION=28527]sibun[/MENTION]
these days you can pick it up online on amazon. i don't think a platinum or ir plug is req.

here are links to a couple of old posts that might help you.. and do watch the full service inspection video linked in the post below:




apart from these, any other obvious damages/wear that needs to be attended to. if the tires are too old or worn, better replace them. i've seen these scoots exhibit a wobble on old (5yr old) tires (Even if they have some tread depth left). you will know how old the tires are by looking at the date code marking on the tire (e.g. 1012 : means 10th month of 2012)

Re: Honda Dio, Activa and Aviator

Hello, this is my first post on this thread.

I recently sold my Pulsar 150 and took over my brother's Honda Aviator (2009 model) as storage spaces helped me in my business related work.

But as she is 11 years old now, and with no records of the service bills, can anybody walk me through a checklist of the things I should check and clean/replace if necessary?

Today I asked a service advisor to take a ride on her, and he pointed out a few things like busted cone set, fork dust seals, brake shoes, cables, wheel bearings and maybe drive belt and probably clutch overhaul alongwith the usual servicing of the vehicle.

If the above points come true, how much of an expense am I looking at?

Also I'll be changing the engine oil and the transmission oil, along with the air filters and the spark plug.

Can anybody please help me with a good Engine oil, a good transmission oil and the cost of Aviator specific NGK spark plug please?

Honda Dio, Activa and Aviator

Are these replacement for clutch rollers used in Activa and other scooters?

Re: Honda Dio, Activa and Aviator

i think a couple of years ago too, dr.pulley attended the autoexpo.. i remember getting a message from them but I couldn't attend it.
Any info on where these rollers can be purchased and their cost in India and a catalog if any ? Not in bulk but for a end user.
I am interested in buying a set of dr.pulley rollers/sliders for my old model dio, i.e. 102cc.

Re: Honda Dio, Activa and Aviator

Finally Activa 125CC gets a proper challenger with Fascino 125 Fi. Let us wait and see for the next few weeks. If it is liked it will be hasta la vista Activa 125. Though a bit disappointed. Was expecting Yamaha to launch NMAX or AEROX.

Re: Honda Dio, Activa and Aviator

i dont think you need to change anything
as for the emissions, the 3.5 and 4500 are the upper limits and not the 'ideal values'.. so the readings from your scooter should be below them to be emission compliant.
whether these puc equipment are properly calibrated and work as designed is altogether another story.
as long as it passes the puc, and you dont face any starting trouble, it runs fine and get a decent fe (say around 40 ish in city traffic) i dont think you should be worrying about fixing anything 'that aint broken'.

Re: Honda Dio, Activa and Aviator

Pucc 12.11.2019.[ATTACH]252088[/ATTACH]

Re: Honda Dio, Activa and Aviator

Thanks [MENTION=16602]s1d[/MENTION] !

Cleaning & retuning of Carburettor with change of Spark Plug to a new one (Bosch) solved all the starting troubles.

Now it idles nicely and cold starts problem have disappeared.

Please suggest if the Coil Plate should be changed as its resistance has dropped to 249 ohms. A new one checked (of Varroc) showed 260 ohms. As it might improve the sparks and subsequently lead to better fuel burning and efficiency.

During latest pollution checks, the idling CO volume %age was only 0.04 against a standard of 3.5, thanks to the tight ring clearance (hand-grinded 0.25 rings USHA make fitted in standard bore).

This has also resulted in HC levels of only 13 ppm against prescribed levels of 4500 ppm.

Re: Honda Dio, Activa and Aviator

With wire only about 1 inch from body, there is a thin Blue spark which is sometimes Yellow, but if kept 1 cm apart then many yellow sparks.

With plug cap attached there is no spark in my old plug,

With plug cap attached, there is little Yellow spark in a new plug. This spark is too less, if compared to only wire spark with body.

Blue-Yellow to White /Green resistance is 249 ohms in the armature (charging coil) under magnet. White to Green (lighting) is 2 ohms.

It idles if fitted with Zero Resistance plug; shuts down on increasing accelerator.

If starts and allowed to idle, it keeps running with varying rates of idling, not static. Somewhere midway stops by getting slow or if accelerated or choke given.

Carburettor now cleaned and tuned afresh.

Re: Honda Dio, Activa and Aviator

Check spark without the spark plug, directly at the wire by holding it close to a metal surface on the scooter.
does you scooter exhibit starting trouble, especially on cold starts ? does it run ok if ridden for a few minutes i.e. when hot?
if so you might want to check and adjust the valve clearances.
and maybe get the carb cleaned and setup correctly.

Re: Honda Dio, Activa and Aviator

Thanks a lot.

Ignition Coil is new with Wire a month ago, after it was found faulty.

How to check a faulty CDI ?

The Armature inside Magnet has not been commented in your post.

What about that?

Coincidentally, I have changed the old Excitor Coil (327 ohms) inside magnet today with a new Swiss make (401 ohms).
This resulted in better spark and performance in my Splendor.

Re: Honda Dio, Activa and Aviator

A red spark to no spark means, the entire sparking assembly has to be checked, with the first thing being the ignition coil, the wire from the ignition coil and the spark plug cap. A faulty ignition coil would mean bad spark to no spark at all, and red one like you've mentioned. A faulty CDI too can't be ruled out, but CDIs for the most part are very reliable. But, to start off check all four, spark plug, plug cap, wire and then the ignition coil, and keep your observations posted.

Cheers!
VJ

Re: Honda Dio, Activa and Aviator

Now Activa 110cc HET 2013 shuts down during running.

I checked Spark in the Plug.

It is not regular, sometimes Red, some times Blue or some times no park on Cranking the engine.

Please help me diagnose.

Should I change armature having light and Excitor could or CDI ?

Could it some wire broken midway ?

Awaiting quick response.

Regards

Re: Honda Dio, Activa and Aviator

hmm.. maybe its just the ergonomics not suiting you. try adding/removing a bit of seat foam to increase/decrease seat height and see if that helps.
does it happen only with the activa 125, maybe ride another scooter and also see. on a scooter your arms are in a more bent position (L shaped) compared to riding a motorcycle which is a bit more stretched out.