Izh Jupiter-5 ignition adjustment: detailed description

The IZH Jupiter 5 motorcycle is one of the latest models of the brand. This model can be found in every corner of our country, working in rural areas and in the city. The popularity of the motorcycle is explained by its simplicity and accessibility. Back in the days of production, even vocational school students could afford it, and today the cost of a running model is comparable to a monthly salary. The motorcycle has a strong frame that can withstand uneven dirt roads; you can easily attach a stroller to it and turn it into a cargo worker. However, not everything is as good as it seems. Jupiter 5 received an outdated 2-cylinder, two-stroke engine. Despite the driving performance, the engine did not have a very long resource and required careful ignition settings. To make life easier for the owners of this model, we will tell you how to set up the ignition on IZ Jupiter 5. In our other review, you can learn about the pros and cons of installing electronic ignition on IZ Jupiter 5.

Contact ignition

From the factory, the model is equipped with a simple contact ignition. Many motorcyclists do not like it for inaccuracies in operation and frequent desynchronization of settings, but these are all engine diseases with crankshaft problems and other major troubles. On a good engine, the correct ignition setting of the IZH Jupiter 5 will not cause any complaints. To set up, we need a caliper, a 12-volt light bulb with 2 wires, two screwdrivers, an open-end or spanner wrench. First of all, remove the right cover, opening access to the generator and the main ignition elements.

Now we unscrew the spark plugs and insert a long screwdriver or a thin metal rod into the right cylinder. Next, turning the nut in the ignition center connected to the crankshaft with a wrench, we set the piston at top dead center. To find the v.m.t. You should tinker a little, it is important to very accurately catch the moment of maximum protrusion of the screwdriver. At this point, you need to fix this position (with the mark on the screwdriver). Next, we will need two hands, in one we hold the screwdriver, with the other we hold the caliper parallel and note the coincidence of the mark and the scale of the device. Next, we ask our comrades to turn the crankshaft COUNTERclockwise (lowering the screwdriver). On the caliper we fix the lowering of the screwdriver by 2.4 - 2.6 mm. This ignition adjustment for IZH Jupiter 5 is called advance. Now let's move directly to the ignition cams. When setting the piston, you should pay attention to which of the cams begins to open. We attach a light bulb to it; to do this, we hook one contact to the cam, and the other to ground. We release the fixing screw (it is located near the base of the cam) and rotate the adjacent adjusting screw. Until the light bulb starts to go out. The general idea of tuning is to catch that subtle moment when the light bulb just starts to go out. That is, the light will be on, but literally after 1/10 of a turn of the screw it will go out. Holding the adjusting screw, we tighten it with a fixing screw and the adjustment of one cylinder is completed. You can proceed to the next one, setting it up in a similar way.

Maintenance Features

Often during operation it is necessary to correctly set the gap between the contacts of the breaker. To do this, you need tools and a diagram to see which elements need to be dismantled.

The algorithm of actions is as follows:

place the motorcycle on the stand;
turn on neutral;
unscrew the spark plug from the cylinder;
remove the engine crankcase cover;

turn the crankshaft until the contacts are as open as possible;
using a screwdriver, loosen the locking screw;
using a special feeler gauge, set the gap to 0.35-0.45 mm and fix it with a screw;
we collect everything in reverse sequence;

turn on the ignition and start the engine. Its stable operation at idle indicates that the adjustment has been correctly performed.

In general, all the wiring of IZH Planet 5 is very easy to do with your own hands.

The need for such work often arises when operating a motorcycle:

in wet weather, driving in the rain for a long time (oxidation or dampness of electrical contacts);
when traveling over rough terrain, replete with vegetation and bushes (mechanical damage to wiring);
when used in winter (snow and slush stick to the wires and can damage them).

Often the sound signal suffers during operation. Its malfunctions manifest themselves in the form of deterioration in sound quality.

How to install electronic ignition on Izh Jupiter 5

To restore its functionality, you must perform the following procedure:

loosen the locknut using an open-end wrench;
turn on the ignition;
press the button to turn on the sound signal;
use a screwdriver to adjust the tone;
repeat the procedure until we get a clear and loud sound;
tighten the control nut.

Conclusions: we are confident that this article will help you in servicing motorcycles of the IZH family (see also the article about). Both the attached diagrams and description will help you avoid making mistakes during operation.

While easily fixing mechanical failures, motorcyclists experience difficulties if the electrics fail. It’s completely in vain, the wiring diagram of the planet Izh 5 is not complicated, it’s easy to figure out.

There is no need to have special stands and equipment for repairs. A minimum knowledge of electrical engineering and a simple avometer (tester) is enough; even often you can get by with just a test lamp.

We will tell you in more detail about the main electrical wiring components and possible malfunctions. The Izh Planet wiring diagram makes it easy to find a broken wire or damaged insulation (for example, a bad contact always gets hot).

In this case, we look to see if there is a spark at the coil output and at the output at the spark plug contact. Let's take a closer look at the main wiring components of the Izh Planet.

Contactless ignition on Izh Jupiter 5.

If you are the owner of a more modern and beloved BSZ motorcycle on Izh Jupiter 5, then in addition to all its well-known advantages, ease of customization will also be added. To begin with, we need to unscrew the spark plugs and, without removing them from the spark plug caps, lean them against the ribs of the cylinder, then catch the T.M.T. one of the pistons and rotating the crankshaft back lower the piston by 2.6 mm. When the advance is set, we move on to the modulator.

This element must rotate freely, due to which we must “catch” the moment of spark formation (on the spark plug) with the ignition on. Next, you need to very accurately fix the resulting position by pulling the modulator. Now let's move on to the next cylinder. We also place its piston in the top position, and then unscrew it, lowering it by 2.6 mm. Now, turning the crankshaft by the generator nut, we look at the ignition. If it matches, then everything is set, if there are deviations, then we proceed as follows: for early spark formation, loosen the lock nut of the modulator and set the ignition in the manner described above, then move on to the option when the ignition is later.

With late ignition, the edge of the modulator grinds down until, with the advance set, a spark is formed at the right moment. Finally, leaving the spark plugs on the cylinders, we crank the engine using the kickstarter, determining the evenness of the spark plug formation “by eye.” You can more accurately monitor the accuracy of the settings only by running the engine.

We recommend reading the article on tuning the Izh Jupiter 5 motorcycle with your own hands

Technical specifications

Overall length 2,115 mm.
Overall width 780 mm.
Overall height 1,025 mm.
Ground clearance 135 mm.
Dry weight of the motorcycle is 160 kg.
Maximum speed 110 km/h.
Fuel tank capacity 18 l.
Cruising range on the highway is 160-180 km.
Fuel consumption on the highway is no more than 4 liters per 100 km.
Fuel: Gasoline with autol 10-18 in a ratio of 25: 1
Fordability 300 mm.
Engine Stroke 58 mm
Cylinder diameter 61.75 mm
Number of cylinders 2
Engine displacement 347 cm3
Compression ratio 6.8
Maximum power 18 hp. With.
Air cooling
Lubrication system combined with fuel
Carburetor type K-28ZH

Multi-disc clutch, in an oil bath with an automatic release mechanism. The gearbox is four-speed, two-way. Motor transmission is a rollerless double-row chain, gear ratio - 2.57. Transmission from the gearbox to the rear wheel is a roller chain, gear ratio - 2.33. The frame is tubular and welded. The front fork is a telescopic spring type with hydraulic shock absorbers. Rear suspension pendulum spring with hydraulic shock absorbers Type of brakes drum Type of wheels easily removable, with tangential straight spokes. Tire size 3.25-19″

Setting up contact ignition on Izh Jupiter - 5

Let's take a step-by-step look at how to set up contact ignition on this device:

Align the piston of the desired cylinder: - insert a screwdriver into the cylinder - rotate the crankshaft while holding the screwdriver
Take a ruler and place it next to the screwdriver.
Rotate the crankshaft, holding the screwdriver down with your finger so that it is level. We find a dead point.
Turn the crankshaft in the opposite direction (1.5-2 mm).
A spark is generated when the cam opens, locate the two adjusting bolts.
Take a light bulb with two contacts, connect one to ground, the other to the contact.
Turn on the ignition switch.
You need to find the moment when the light comes on (the moment it lights up, the start occurs), and when it goes out, the contact closes on the contrary.
Turn off the ignition, do and adjust the same with the second cylinder

System assembly and installation

The contacts in the breaker, the capacitor, the ignition bobbins and the armor wires, which are part of the previous ignition device, are probably eliminated. The switch should be installed in the glove compartment on the right, and the ignition coil directly under the tank. There are no gaps for fastening on the reel, which means it can be attached using a thick layer of adhesive tape. The standard bolt is also eliminated along with other parts.

In place of the bolt, install a pin of the specified size and put on a washer. Then, the rotor is tightened with a nut located at its end. The hall sensor is attached to the stator by any means. The basic rule when installing it is to set the optimal cross-sectional distance of the modulator and the ratio of the radius and line of symmetry.

When the hall sensor can be secured, we apply the modulator. It should fit into the hole made in the sensor. In most situations, there is a discrepancy between the sizes, so it is necessary to place washers on the stud. If you manage to maintain the required gap, it is recommended to install an engraver and tighten the modulator with a third-party nut.

Ignition adjustment Izh Jupiter - 5

After all the adjustment manipulations are done, the turn comes for an operation called Izh Jupiter-5 - ignition adjustment.

It is better to produce from the following devices:

Device K-25 - has an indicator head that fits into the holes for spark plugs or bushings and a knob with divisions from the tool
Lamps 12 V, 2 W - with their help you can determine the moment of opening the necessary contacts of the breakers. The lamp must be connected to ground and the breaker terminal of the corresponding cylinder (for this, lamps with wires are used at the end), on which the ignition timing is adjusted.

Required Parts

In order for the ignition system to work correctly, a number of auxiliary parts are required. They are listed below:

Switch for BSZ VAZ cars. You should not choose exclusively from the low price segment. The Astro switch has a lot of positive reviews;
Hall Sensor. The best option for Jupiter 5 is a similar manufacturer VAZ. By purchasing it in branded packaging, you protect yourself from counterfeits;
Ignition coil with two terminals. You should choose between the gazelle engine number 406 or Oka with an electronic ignition system;
A pair of silicone armor wires with rubber caps;
The modulator is a butterfly-shaped plate made of iron.

Modulator

The most difficult stage is the production of the modulator

It is important to maintain the required shape. The more reliably the required dimensions are observed, the lower the likelihood of problems occurring after implementing the system, that is, there will be no need to adjust it using a file

The ignition timing must match on any cylinder used.

The bolt hole must be located in the middle. Otherwise, the engine operation will not be synchronized. It is also recommended to check the integrity of the crankshaft bearings. If you find defects, you should immediately replace it.

The contact ignition is not able to work normally if the bearings are damaged. The thickness of the part should not exceed one and a half millimeters. If it is thin, it will not be possible to avoid deformation, and if it is thick, it will come into contact with the surface of the hall sensor housing.

To create the plate, it is allowed to use any material except steel. Aluminum and others should not be used as they are not magnetic. The drawing that must be followed can be found in the public domain. The presented diagram will be useful to those people who decide to modernize the vehicle ignition device. Below are methods for installing electrical ignition devices in Jupiter.

It must be turned by a professional turner. He will make a simple disk and draw on it the markings of elementary distances between the corners. Then, in accordance with it, you will cut out the necessary sectors at home. The cost of the modulator is seventy rubles.

It is not advisable to use an ordinary plate, since its width is less than twelve millimeters. This will not be enough to fully accumulate the energy resource in the coil. Of course, it can be installed, but achieving four thousand revolutions per minute will become impossible.

In addition to the above you will need:

A stud with an applied thread of seven millimeters, pitch 1, as well as a pair of nuts with washers of the corresponding parameters. The priority material for these components is brass. This is explained by the least magnetization of the plate from the generator rotor.

If you use a standard bolt, then difficulties may arise with the implementation of the ignition. The bolt tends to follow the modulator as it is tightened. However, it is necessary to observe the leading indicator, maintain the same position of the rotor and modulator, and tighten the bolt. It is advisable to use a pin, since many are not able to perform all the necessary actions in total;

A set of wires with connectors for ignition without contact from VAZ. This part can be purchased or made with your own hands.

Electronic ignition on IZh Jupiter Setting the ignition of Izh Jupiter 5 Izh Jupiter 5 backwards

Caring for a sunrise motorcycle generator - how to remove, what to check and install correctly

Generator maintenance mainly comes down to tightening the threaded fasteners of the generator stator and rotor, as well as the wire terminals.

In order to remove the generator, you must:

disconnect the wires of the ignition circuit, sensor, brake light and direction indicators from the generator terminals;
unscrew the three screws securing the stator to the crankcase and remove the stator;
Unscrew the bolt securing the generator rotor and, with light, careful blows of a wooden hammer on opposite sides of the rotor, remove it from the trunnion and remove the key.

Checking the removed parts

After removing the generator stator and rotor, wash the parts with clean gasoline and carefully inspect them. Disassemble the wire fastening terminals on the stator. Wipe dry all insulating parts of the terminals.

Generator installation

Installation is carried out in the reverse order, in this case it is necessary:

check the runout of the generator rotor, which should be no more than 0.1 mm with the bolt secured;
tighten the generator stator without distortions, ensuring a tight fit to all three supports;
install the ignition correctly;
The generator wires must be securely fastened and well insulated from each other.

Main stage

As noted in the assembly diagram of the Izh-Planet 5 box, further disassembly operations are carried out above the insides of the roof of the unit, since the secondary shaft and sector could remain in it. If it is necessary to remove them, you need to straighten the petals of the lock washer, unscrew the nut, remove the star and washer. Holding the gear very carefully to prevent the shaft from jumping out, the cover is moved to a clean and flat surface with the gear facing up.

It is worth noting that the bearing of this part of the assembly does not have a retaining ring. Therefore, when removing the shaft with bearing, the rollers may fall out, so be careful. If the specified element has exhausted a decent service life, there is a risk that when dismantling the secondary shaft, the outer ring may jump out of the seat and remain on the rollers. Next you need to start pressing out the oil seal. To do this, the installation rings are removed from the hole in the cover, after which the outer ring of the bearing is removed.

General information

IZ Jupiter 3 uses (BSZ) 1137.3734, intended for all models equipped with a 12-volt generator. The ignition coil module for Jupiter 4 or another model makes it possible to select the appropriate operating mode of the motor thanks to the serial connection of the output wires.

The device as a whole improves the technical parameters of the vehicle thanks to:

improved engine starting at low temperatures;
more stable operation of the power unit, which is achieved as a result of reducing the asynchrony of spark formation, as well as by optimizing the SZ advance angle in accordance with engine speed;
reducing the level of toxicity of exhaust gases, fuel consumption, as well as reducing deposits on spark plugs;
stable start of the power unit even on a battery that has run down to 6 volts, provided that certain models of ignition coils are used;
easier installation and maintenance of the system as a whole.

Electrical circuit diagram of the IZH Planet Sport motorcycle

How to make the transition to contactless SZ? When the engine is switched off, the indicator lights up, and when the engine is running, it goes out.

How can I modify the generator? After long-term use, the ignition circuit of IZ Jupiter 5 is changed by the owners to systems from other Soviet motorcycles.

The turn signal switch is located on the frame under the gas tank.

Wiring diagram for IZH Jupiter 5 The bike of the fifth Jupiter has a contact SZ, which is battery-powered, so the operation of the vehicle is highly dependent on the state of charge of the battery. Install the generator in reverse order.

It is protected against short circuits in the signal lamp circuit and does not require maintenance. For beginners, standard lighting can not only be inconvenient, but also lead to an accident. To do this, you need to identify what problems there are with the wiring. At the same time, the schematic diagram of the electrical equipment of IZH Jupiter 5 is preserved.

Burnt contacts, oily spark plugs and batteries with a charge of less than 12 V further worsen sparking. An additional coil is used as an exciter. Charging IZH

Related article: Checking the loop resistance phase zero

General information

The device as a whole improves the technical parameters of the vehicle thanks to:

improved engine starting at low temperatures;
more stable operation of the power unit, which is achieved as a result of reducing the asynchrony of spark formation, as well as by optimizing the SZ advance angle in accordance with engine speed;
reducing the level of toxicity of exhaust gases, fuel consumption, as well as reducing deposits on spark plugs;
stable start of the power unit even on a battery that has run down to 6 volts, provided that certain models of ignition coils are used;
easier installation and maintenance of the system as a whole.