To remove the lamp front, which will bring away the reflector with it, unscrew the hexagon head pin below the rim in the centre, and when it clears the lug pull the rim away from the body of the lamp at the bottom first.
To get the rim and reflector unit free of the lamp the electrical leads must be detached, or the bulb assembly can be withdrawn from the reflector after springing back the two wire clips that hold it.
Do not finger the polished reflecting surface. It marks very easily and finger marks are difficult to remove without causing damage to the surface finish.
Spring clips secure the reflector to the rim. It should be unnecessary to take them out except to replace a broken or cracked glass.
When refitting the glass or reflector set them the right way up with the opening for the pilot bulb above the main bulb. Space the spring clips evenly around the rim.
Refit the rim over the top of the lamp body first, spring it into place at the bottom and refit the screw and tighten up.
The bulb is accessible by removal of the red plastic from the body. It is held by two screws. The screw heads are countersunk below the level of the plastic.
When fitting replacements make sure that they are of the right voltage (6 volts) and power, and that they have the correct type caps to fit the bulb holders on the machine. Standard equipment bulbs are :
|Main headlamp bulb:||6 volt. 24 x 24 watt† Double filament SBC cap.|
|Pilot and rear bulbs:||6 volt. 3 watt SCC cap.|
†In special circumstances where there is only little call on the battery a 6 volt 30 x 30 watt bulb can be used as alternative.
The usual standard equipment battery is the Varley. This type does not contain any free liquid and is of the so called unspillable ' or absorbtion ' type.
It is carried in the toolbox on the right hand side. The leads are fixed to the battery so that to remove it from the toolbox these must be detached by disconnecting at the snap connectors or ' jacks ' behind the toolbox under the seat.
N.B. - When refitting the battery note that the positive lead (+) must be connected to the frame (Earth). After refitting it is advisable to switch on the lights, and note the ammeter indication. With lights on and the engine stationary the needle should show a discharge. An indicated 'charge' in such circumstances shows that the battery is incorrectly connected. Rectify at once.
Machines supplied into the home market are normally delivered with the battery filled and charged and ready for immediate use. If the machine is not used within a month of its arrival from the factory the battery should be removed and given a ' livening ' charge periodically until it is put into commission. See ' Battery storage.'
In some special cases batteries are fitted filled but uncharged, and have to be charged before use. This must be done in accordance with the makers' instructions which will be found on a card sent with the battery.
Keep the vent plugs tight and the battery top clean and dry.
Periodical topping up with distilled water is necessary. The amount required and the frequency at which it will be needed depend upon the conditions of use, and the temperatures prevailing. A teaspoonful every 500 miles, or weekly, is usually enough, but if the filling is seen to be still dry after putting in the water add a little more until the filling is moist. Do not overfill as the excess will be forced out of the vents. High ambient temperatures will make more frequent topping up necessary. When topping up, do so after a journey.
If too much distilled water is put in by accident and is not absorbed after standing about fifteen minutes, shake out the excess.
Neglect is more often the cause of battery failure than fair wear and tear. The necessity of following the maintenance instructions is therefore emphasised.
If the motor cycle is taken off the road for any reason and is out of com¬mission for longer than a fortnight it is advisable to detach the negative lead. This will prevent the slight discharge due to the minute feed-back through the rectifier that is an inherent characteristic.
Storage for periods of longer than one month will involve permanent deterioration of the battery unless it is freshened periodically by slight charging. Charges of 1 ampere for 8 hours should be given monthly. If the filling is dry add a little distilled water after charging. Failure to charge a stored battery periodically will allow sulphation of the plates to take place and the efficiency will rapidly be impaired.