Help Some problems - Megelli 250R

U have to make sure the airbox snorkel is still stiff and strong.
If its soft it will fold and collapse under higher revs. U can put a bit of tubing in to sort out this problem!

Also check the ignition coil isnt breaking down under high revs on a coil tester.
Good luck! let us know how u go!

I know Megellis in the USA are rare since the ex importer did a stupid job with them.

 

Hey
I cant for the life of me find the check oil screen. Can anyone help me out on this?

 

RH side of the enigne, quite low down, see pic for location

 

There is only 1 vaccum line going from the intake to the petcock. If you have replaced it with a manual version, you will need to block that hole.

 

I Have the same problem. Over 5000 revs start to fail, like if have not enough fuel or air. Anybody knows the solution to that problem?

 

air or liquid cooled motor?check valve clearances first. 6thou inlet, 8 thou exhaust. then new iridium plug. then fuel strainer.

 

I will disarm to check that. Thanks for the advise. I will take some photos to show the step by step.

 

all my megelli,s have had the vacuum operated fuel petcock replaced withnormal ones and the vacuum line capped off.checked inside the tank to see if internal filter clogged?am trying to speak to sihn about your prob but phone not answering.

 

thanks, I'm quite puzzled. I've also noticed that it does not always. When the engine is cold, no failures of any kind in the acceleration. I'll keep looking and failure to have both. Greetings.

 

sounds electrical.do you have a spare ecu module?i assume your motor is air cooled?all megelli motors come from zong shen factory.take off seat to expose wiring and spray each connection when separated with electrical contact cleaner. then move to all other connections.google the carburettor.

 

Mi Megelli it is water cooled, have a radiator on the front, over the lights. About the carb, I can't find no references. I try to get any clue about the TK MV34, but have no luck

 

once it is hot is it hard to start???? this is the first sign of tight tappetts on the valves ,particularly inlet valve.adjust to 6 thousands of an inch for inlet and 8 thou on exhaust. to do you need to remove seat,petrol tank and then little fingers to access.some minor parts will also need to be removed. for the exhausts help if you have monkey fingers.to adjust youi need feeler gauges, screwdriver and a small 6 mm spanner.until that has been done you are wasting your time. i know it is a pain but is step one.will try again to contact sihn and let you know his suggestion.

 

second step is to use contact cleaner on the round connection[top rhs of seat]push together and turn for it to come apart that is for the voltage regulator[finned doodad].spray with contact cleaner so that correct power is going to the electricals. 3rd step is to diconnect ECU that is at lower back of motor. should be a black box. earlier ones could cause problems. spray connections of both wiring loom and ecu with contact cleaner.if clean reconnect. test ride to see if any difference. the air filter has a plastic internal cone to keep the foam filter open. is it still their?if you test ride with the lid off the airbox you should pick up one and a half horsepower.

 

Well, yesterday I change the oil and clean the oil filter. After that, reduce very much the noise, and today a ride some kilometres and don't have issues. I think that maybe there is some rust in the carb, but I have not valor to disarm with out any diagram of reference to re asembly later.

 

hey Christian

I have been searching for a diagram for the TK MV34 on the Internet but have come up short, I found the TK website and have e-mailed them for a copy of a digram and manual. Not sure if I will get one, but I am a firm beliver in asking, the worse thing they can say is no.

http://www.teikei.co.jp/e-index.html

thanks

Chris

 

Awesome, thanks! Hope they answer soon. Thanks again.