How to set the ignition for scooter 4t?Problems with ignition 4-stroke engine can occur for various reasons, but they all lead to the same result - the motor stops start.But the lack of timely spark can not be the only reason that the engine does not start.To accurately ascertain what exactly is the cause of the ignition failure of the motor, you should check all other possible malfunction that may interfere with the operation of the engine, and remove them.The ignition system failure may occur, the causes of which may arise from the mechanics, and from elektirki.Using simple techniques, you can determine whether the case in mechanical failure or fault electrical components.At home, you can eliminate any malfunction in the ignition system 4-stroke engine scooter.
Reasons for refusal 4-stroke engine scooter
If the engine does not start the scooter, the causes can be very different:
1. No fuel supply to the combustion chamber.
2. Do not adjust the flow of air.
3. No compression.Burned and deformed valves do not provide compression.The reason for the lack of compression may be incorrect assembly of the cylinder-piston group, as well as failure of the cylinder.
4. Faulty gas distribution mechanism responsible for the operation of the valves.
5. Faulty spark plug.
6. The ignition spark is not produced during the mechanical operation of the generator.
The principle of ignition on the engine 4-stroke scooter
Ignition scooter 4t depends on timing synchronous movement of the shaft, located in the cylinder head and the magneto.On the outer side of the rotor housing has a projection in contact with the sensor during rotation of the ignition.At the moment of contact spark at the spark occurs.The rotor is connected to the crankshaft.At the time of the spark crankshaft and the piston is in the extreme position of the dead point.How to put the ignition for scooter 4t?It is necessary that during the passage of the dead point position corresponds to the timing shaft moment of ignition of fuel in the combustion chamber.
Getting adjusting ignition
Before you put the ignition for 4t scooters, make sure that there is a spark, and the candle is serviceable.To do this, unscrew the latest, connect it to the ignition cable and press the metal housing to the frame.When the rotor should appear clearly visible spark, the presence of which indicates the proper functioning of the generator, as well as of the candles.
Adjusting ignition scooter 4t
to rotation of the rotor shaft of the generator and the timing corresponds to a desired duty cycle of the piston, it is necessary to put their position on the label.The main body has a position marker magneto dead center of the cylinder in the form of the letter "T".The rotor can be set manually, as this can be done with a kick-starter.The position of the shaft is determined by the timing marks on the timing star.Three points inflicted on the star on the outside, form an equilateral triangle, the apex of which should be directed to the extreme position of the piston.Adjust the ignition is the correct position of the stars exhibiting timing.
Ignition advance
How to set the ignition for scooter 4t ahead?There is a perception that if you do so, you will increase the speed and capacity of the motor.In theory, the way it is.If the spark during compression will occur just before the moment of passing the dead point of the cylinder, it should give the desired effect.However, the technical realization of this configuration plug on the scooter is related to the transfer of its projection on the body of the generator rotor.There is a method that is more simple and safe, enabling a certain effect.You can plug on the ledge to make the step.To do this, remove a layer 0.5 mm from the middle of the surface of the projection.The step should start with the side which first contacts the sensor plugs.Dual spark that results will provide a more predictable start the engine, as well as increase the likelihood of ignition when exposed to adverse factors related to weather conditions and incorrect setting fuel and air.
