Assembly instruction for generator & ignition system for Gilera 124 Extra (1961)

IMPORTANT:	Please do read those instructions fully before starting work on your bike or any modification on the supplied system. Also, please note the remarks on the information page for this system.
	If you have no expertise for the installation have it done by an expert or at a specialist's workshop. Improper installation may damage the new system and your motorcycle.
	Before you order a system, please check against the section "you should have received those parts" whether all parts wanted are in the kit. You might want to order a puller tool, light bulbs, fuse, horn, flasher unit etc. Never use anything other than a puller tool M27x1.25 to pull the new rotor again. In case of damage to the rotor as a result of use of other (unsuitable) tools and facilities, the warranty claim expires!
	If you have access to the Internet, see those instructions online. You get larger and better pictures by clicking onto them and possibly updated information. System list at http://www.powerdynamo.biz
Check packing and rotor!	The rotor is sensible to blows during transport. We therefore double pack the material (box inside box). Should the system have been despatched to you via a reseller and arrive not packed like this, please inform us.
Check packing and rotor!	Before assembly, please always check the magnets (try to push them aside with your fingers). After impact the glued in magnets might have broken loose, sticking to the rotor however by magnetic force, so that one does not notice right away. During run there would be considerable damage as a result. Before putting the rotor to the engine, please make sure that its magnets have not collected metal objects such as small screws, nuts and washers. That equally would lead to severe damage.

	To pull the new rotor again, you need a puller screw M27x1,25 (part 99 99 799 00). Note: never use a claw puller, a hammer or any other device, that will shake the magnets off.

	You should have received those parts: stator assembly rotor advance unit (black box) ignition coil regulator/rectifier high tension wire wires brown, red and blue wire binders Do not worry over the direction arrow on the rotor showing anticlockwise. The system is made for the clockwise running Gilera shaft.

Make sure your Gilera rests securely on her centre stand, preferably on an elevated work bench and that you have good access to the generator side of the engine. Disconnect your battery and take it out of the motorcycle. Note that you will install a 12 volts system, so you will either need a 12 volt battery or you use the option of driving without a battery. You will still have to replace all lightbulbs to 12 volt ones. The horn may stay at 6 volts. When you make use of the non-battery options and have side indicators (flashers) at the same time, you will need to install a high capacity condenser (22.000µF/16V) in place of the battery to smoothen the pulsing voltage. Otherwise your flasher unit will not work correctly.
	Unscrew the generator cover and take it off. Disconnect the wires from the old dynamo. Originally you should have there a red and a green wire.

	Unscrew the stator housing and take it off. Pull the rotor off, you will need a puller screw for this. Take the woodruff key from the crank. You will not need it any more. Please do not forget to do so, otherwise you will have trouble later on in the assembly. (Remark: This woodruff key does not actually hold your rotor on the shaft, this is done by the cone. It simply guides to the correct setting which will now be otherwise achieved.) Remove the 2 bolts. They will be replaced by 2 screws M4x25.

Unscrew the stator coil from the base plate and lift it a little away from it so that you can access the mounting holes. Take care not to damage the paint insulation of the coil.
	Put the base plate with the stator hanging loosely from the unit into the place of your old generator. Put the stator coil back onto the plate, take care not the damage the wires. The stator has to snap in rather sharply. If it sets soft, you have probably squeezed a wire underneath! Make sure that the inner opening of the stator unit slots evenly over the elevated fixing rim of the base plate - otherwise the coil will sit lopsided and will touch the rotor, damaging it. Should you take the stator completely off the base, make a note though which of the 2 openings the wire went. If you change that, your timing marke will be 120 degrees out of place.

	Have a look at the new stator unit. You will find near the larger black coil a small red marking on the baseplate. This is an ignition marking.
	Have a look at the new rotor. On its circumference you will find a small pressed in marking. The marking is durable, but not well visible, especially when the rotor is fixed. So it is a good idea to highlighten the marking with some colour (simplest with a marker-pen).

Take the spark plug out and bring the piston into top dead center position (TDC). As this is difficult to do with the kick lever, place the new rotor onto the crankshaft (do not screw it down) and use it as a handle to turn the crank.
	Once TDC has been found, carefully disengage the rotor again without moving the crank shafts position from TDC. Than place it in such a way back, that the marking on the rotor aligns with the red marking on the base, as shown in one of the pictures above. (The picture here shows similar base. The large red dod is for illustration here only, on the material is only the small dot.)

	Fasten the new rotor by screwing it down with the provided screw M7. You will have to put the 15mm spacer and the large washer to anable the screw to grip. Make sure not to change the crank position. Put the spark plug in again.

It might well be that after some test runs you may wish to modify timing a little. You may change timing by: pulling the new rotor again and resetting it (without changing the crank position during this operation) at the wanted new angle. Turning the rotor clockwise will bring earlier, turning it anticlockwise later ignition.

The new ignition coil, the regulator and the advance unit may be fitted under the tank on the frame with a small support bracket as shwon here as an example.


Before installing the advance unit, have a look at the small switches at the advance unit. They activate different characteristics. There are 4 switches.
The setting needed for Gilera, from 9° at start to 38° at 3,000 revs, are activated with all switches to OFF.

Connect the parts as shown in wiring diagram 91ir12:

To facilitate wire exit through the often small openings in the engine casing, the plastic plug of the generator's wiring that leads to the advance unit have not been put onto the wire terminal. You should place the plug there only once all has been properly installed on the engine side.

Look for the advance unit with its female plug and the two wires (red and white).

Put the provided 2-position plug housing onto this plug and insert the two wires (red and white) from the generator. Make sure that the terminals engage securely in the housing and that you connect:

white to white
red to red

Should you need (or want) to get the terminals out of the plug housing again, enter a paper clip from front next to the terminals and push the little barb aside. Than pull the wire out.

The brown wires from the new generator and the advance unit with the round eye terminals ...

... have to be screwed to the holder frame of the ignition coil (ground). This connection is very important. Please don't depend on the frame as the earth-connection. Varnish, oil and dirt prevent often a good contact!

The grey cable of the advance unit ...

... is the output of the to the ignition coil and gets connected to the single male terminal there.

Important! Never run the high tension cable and the cables from the generator to the advance and/or the grey wire from the advance to the ignition coil closely in parallel (say in one shielding). This will trigger back coupling that disturbes ignition and might even damage the advance unit.

The new regulator/rectifier has a compact plug with 6 positions, of which one is not used (before November 2007 it were two). From November 2007 onwards a female plug cover fitting to this plug is delivered. Into this female plug you have to insert the following wires (which have terminals that snap into the plug):

The two black cables leading from the generator ...

... connect to pins 1/4 of the new regulator (from there equally black wires lead inside the unit). It does not matter which wire connects to which of the both terminals (1/4) as they carry alternating current.

The new brown cable with the round eye terminal ...

... connects pin 3 of the regulator unit (from there equally a brown wire goes inside the unit) with the negative pole of the battery or (in case you drive without battery) to ground (chassis).

The new red cable with the round eye terminal ...

Take care:
Wrong polarity will damage the electronics!

... connects to pin 5 of the new regulator (from there equally a red wire goes inside the unit). Here your regulated positive voltage comes out to connect to battery plus, or (in case you drive without battery) to the voltage input terminal of the main switch (ignition lock, German bikes: pin 51/30).

Make sure that you have a 8A-fuse between battery and vehicle circuitry.

The green/red wire at pin 6 of the new regulator ...

Remark:
Until November 2007 this wire has been a single wire outside the compact plug.

... is for the charge control light. You connect there the wire that formerly did run from the control light to the original regulator.

Sure that this control only functions with a battery present. Should you drive without battery but still connect the wire, you will see that the light glows even as the generator generates voltage. So without battery, do not connect it.

The charge light control function is based on a transistor switch and is an additional function. Even if that should fail, the regulator might still be in ok working condition. Simple check: have the engine running, turn lights on, disconnect the battery. If you have bright lights the unit is ok.

Remains the blue/white wire at the advance unit. This is the kill (cut-off) wire.

Connected to ground - it will stop ignition!

Note:
Should you experience ignition failures, disconnect as a first measure this blue wire. In many cases that will permit you to get mobile again (particulars see: technical help)!

Switch off via separate kill switch
(when driving without battery):
The relay will not be fitted. The blue/white cable of the advance unit will be connected to a kill switch, closing against ground (a button at the handlebars). Or you mount an ignition lock that has a facility to connect against ground when in OFF position.

Battery method:
Connect the brown relay wire to good ground. Lead the longer black wire from the relay to the wire that did run previously to a pin carrying voltage when the switch is on (in German bikes: pin 15) and connect it there.
Connect the blue wire from pin 30 of the relay to the blue(/white) wire at the new advance unit.
Should your battery fail on the road, just disconnect that blue wire and your bike will run again (it will now only not stop by switching off).

Relay wiring
(if used):

The brown wire with the ring terminal from pins 87a und 86 goes to ground.

The black wire from pin 85 goes to a main switch terminal carrying voltage if switched on.

Screw the high tension (ignition) cable ...

Please do not use any spark amplifying cables, such as "Nology supercables" or "hot wire". This will disturb the system and possibly damage it.

... into the ignition coil and pull over the rubber seal before mounting the coil (it will be easier).

Please do use the cable arriving with the pack and not any old cable.

You will do yourself a favour to treat your bike to new spark plugs and spark plug sockets (preferably some between 0-2kOhm). Plenty of problems are to be traced back to "apparently good" (even completely "brand-new") sparks plugs, terminals and cables.
Do not use spark plugs with an intern suppression resistor. NGK (e.g.) offered such spark plugs coded with an "R" (for resistor).

Finally - and before installing the battery and before the first kickstart - please re-check carefully all connections and fitments against the wiring diagram. Do check battery and light bulbs for correct voltage (12V).

Should something not work, please consult our trouble-shooting guide on our homepage. As a first step disconnect the blue wire from the coil and re-test.

IMPORTANT: During crank shaft repair the dynamo shaft is often machined and gets shorter. The result is a rotor sitting lower, possibly touching now with its rivets the stator coil. The result is a destroyed stator and ignition failure.
For more detail and how to check see (online) here.

	Important safety and operating information
#	Safety first! Please observe the general health and safety regulations motor vehicle repair (MVR) as well as the safety information and obligations indicated by the manufacturer of your motorcycle.
#	Ignition systems generate high tension! With our material right up to 40.000 Volts! This may, if handled carelessly, not only be painful, but outrightly dangerous. Please do keep a safe distance to the electrode of your spark plug and open high tension cables. Should you need to test spark firing, hold the spark plug socket securely with some well insulating material and push it firmly to solid ground of the engine block.
#	After installation, please check tightness of all screws, even those preinstalled. If parts get loose during run, there will be inevitably damage to the material. We pre-assemble screws only loosely.
#	Give the freshly installed system a chance to work, before you start to check and test values, or even worse, before you apply changes thought to be sensible by you without having seen the system run. Our parts have been checked before delivery. You will not be able to check much anyway. At any rate do refrain from measuring the electronic components (such as ignition coil, regulator and advance unit). You risk severe damage to the inner electronics there. You will not get any sensible results from the operation anyway. Bear in mind that also your carburettor, your spark plugs and spark plug sockets (even if completely new) might be the reason for malfunction. The general experience with our systems is that the carburettor will have to be re-adjusted to lower settings. Should the system not start after assembly, first disconnect the blue cut-off wire directly at the ignition coil (or in some cases advance unit) to eliminate any malfunction in the cut-off circuitry. Check ground connections carefully.
#	The spark of classic, points based ignition systems has with about 10.000 Volts only little energy and looks therefore yellow and bulky (hence well visible). The spark from our system is a high energy spark with up to 40.000 Volts and therefore very sharp (needle thin focused) in form and blue in colour, which makes it not so well visible. Furthermore you get spark only at kickstart operated revolutions and not already by pressing the kicklever down with your hand (as you might do with battery based ignitions).
#	Systems using a twin outlet ignition coils have a few percularities. Please observe that during tests on one side, the other has either to be connected to an fitted spark plug or securely earthed. Otherwise there will be no spark on either side.
#	Never do electric welding on the bike without completely disconnecting all electronics.
#	Electronics are very sensitive to wrong polarity. After work on the system, do check correct polarity of the battery and the regulator. Wrong polarity creates short circuits and will destroy the regulator, the ignition coil and the advance unit. As a rule, wiring will always be colour to colour. Instances, where colour changes between wires are expressly mentioned in our instructions.
#	When you handle the new rotor, take care not to damage its magnets. Refrain from direct blows to the circumference of the rotor. For transport never put the rotor over the stator. Observe our information relative to transport of the material.
#	Do not use spark plug sockets with a resistance of more than 5kOhm. Better use 1 or 2kOhm ones. Bear in mind that spark plug sockets do age and thereby increase their internal resistance. Should an engine start up only when cold, a defective spark plug socket and/or spark plug is very probably the cause. In case of problems check high tension cables too. Never use carbon fibre HT-cables, never use so called "hot wires", never use resistor spark plugs.
#	It is a good idea to cover the rotor in a thin layer of oil to reduce the risk of corrosion.
#	Never use a claw puller or a hammer to disengage the rotor. Its magnets might become loose in the event. We offer a special puller screw for disengaging the new rotor again (see assembly instruction)!
#	Should the motorcycle not be in use for some longer period, please disconnect the battery (so existing) to prevent current bleeding through the diodes of the regulator. Though, even a disconnected battery will empty itself after a while.
#	Please do observe those remarks, but at the same time, be not afraid of installation. Remember, before you, thousands of other customers have successfully installed the system. *Enjoy driving your bike with its new electric heart!*

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