Acceleration Shaking Problems By mela (Read 3,533 times)

[mela]

Newbie,
Hi

I heard you are the person to ask.
I would appreciate any help you could give me.
Bought a used 2006 Roketa Bali 250cc
Mc54b-250
Only problem currently is when you initially give it gas it kind of vibrates /bounces until you reach about 5 miles per hour or the first 4 seconds of acceleration.
I have read other people had or are having the same problems, but I have not read how to correct this problem.
Please get back with the fix to eliminate this problem.
Thanks, Mel
Email me at; [e-mail]

[JR]

Welcome to the forum Mela and my first thought is the variator and it's weights, classic sign of a stuck roller weight or even nasty sticky Chinese grease in the variator that is keeping the rollers from moving properly untill you reach higher speeds and RPM's.

I'd pull the variator cover off and start there with a through cleaning and inspection of variator, rollers belt and clutch.

JR

[mela]

JR,
Thank you for the quick comeback.
Question #1 - Where is the variator cover?
What would I clean and what would I clean it with?
Would I lubricate anything? If so, What would I lubricate it with?
It seems it does this shaking/vibrating only at the initial giving it gas.

I would assume the person that i bought it from did not change the fluids for awhile on this scooter.
What do I have to change?
What type of oil?
What weight oil?
Is there a transmission that has to have oil changed?
If so, where is it located and what type of oil?
What about the radiator?
I did not get any type of manual for this bike,
Any idea on location on the proper manual
The scooter is a 2006 mc-54B-250, 5Ry/linhai.
Any assistance would be appreciated.
thanks, Mel

Welcome to the forum Mela and my first thought is the variator and it's weights, classic sign of a stuck roller weight or even nasty sticky Chinese grease in the variator that is keeping the rollers from moving properly untill you reach higher speeds and RPM's.

I'd pull the variator cover off and start there with a through cleaning and inspection of variator, rollers belt and clutch.

JR

[JR]

OK Mela a little confused? You state in one section it's the Bali 250 and in another a MC-54B-250? Got to know which one as they have different engines? Take a look at this help file and see what you have?

thescooterprofessor.proboards.com/index.cgi?board=250ee&action=display&thread=191

Can help you with all your answers when I know exactly what you have.

JR

[mela]

JR,

Thank you.
According to the picture, I have No. 2 – the CFMOTO / Honda Helix Clone.
My engine cylinder is vertically under the seat and the spark plug is under the seat area.
My serial number starts with 5RYSG ,
Hopefully we now know the engine in this scooter.
Thanks, Mel

[JR]

Ok so let's get started. As with a lot of Chinese scooters the manual you asked about is poor if any at all so on the engine folks use the good old Honda helix manual as a guide, it's the same engine:

thescooterprofessor.proboards.com/index.cgi?board=250ee&action=display&thread=277

In this manual is a section on the CVT area which includes your clutch, variator and belt and how to service them.

Here is a tutorial on how to change the gear oil on a 244cc engine:

thescooterprofessor.proboards.com/index.cgi?board=250ee&action=display&thread=276


Now here is a tutorial on how to do a slider upgrade on both engine models and even if you don't want to upgrade this is still a good reference to the variator and what it looks like.

thescooterprofessor.proboards.com/index.cgi?board=250ccvt&action=display&thread=216

Last but not least here is a good PDI that helps with info about how to properly prep your scooter:

thescooterprofessor.proboards.com/index.cgi?board=gall&action=display&thread=238

As far as cleaning the variator use carb cleaner or even hot soapy dawn water, get it very clean and no grease it just makes a mess and is not necessary, slightly grease the center shaft (boss) and a tad on the variator plate "U" slides but that's it.

Engine oil I use non-synthetic and in this heat 20W/50W but 10W/40W wilol be fine too.

Coolant use a good 50/50 premix, I use Prestone. Also I recommend changing the brake fluid.

Gear oil I use a good brand 70W/90W oil.

This should get you started and if you need anything else we are here for you. JR

[mela]

thanks jr ,

i will go to library to open and save files
i have a dail up

thanks mell

[mela]

jr
thanks great materials
good data
thank you for your great help

mel

ps. were would i find update items to improve the scooter

mel

[JR]

I'm working on a lot of that stuff Mel but hey just start a thread and ask anything you want, there are a lot of guys here who can answer and guide you through any improvements you want.

Folks here love to help.

JR

[damin69]

Improvements There with the Honda clone 244 the best improvements are HID Upgrade there are a couple of threads that detail it out.

Improve the charging system again. There are a couple of threads on the forums that go over some upgraded that some of us have done to improve and get good reliable charging.

Then there is cooling. That I am working on right now and is a work in progress. It will just take you little bit of digging in the tech forums. You will not be disappointed there is lots of good information and more added daily.

[mela]

Hi Jr,
I went uptown this evening and found out that the headlight switch only turns on the headlight when you rock/move the switch downward towards me will turn on the high beam lights.
How can we correct this?
Also, is there supposed to be any type of dash board lights?
I do not have any lights lighting up the instrument panel.
If there are supposed to be lights, how are we to get to them?
When I coming to a stop at a stop sign, it almost feels like the motor is trying to die.
It is like a shaking, hesitating feeling.
Noting that the motor does not die but does not feel right.
Also, it seems that when you come to a stop and release the throttle, it still feels like the engine is moving the scooter forward and not releasing like a neutral position.
Please advise.
Thank you,
Mel