Aprilia SONIC 50 1998 User Manual
use and maintenance
aprilia
part# 8202105
Sonic 50
© 1998 aprilia s.p.a. - Noale (VE)
This manual is to be considered an integral part of the vehicle,
which must be delivered complete with it also in case of resale.
aprilia s.p.a. reserves the right to modify its models at any time,
without prejudice to the main characteristics here described.
All rights as to electronic storage, reproduction and total or par-
tial adaptation, with any means, are reserved for all Countries.
The mention to products or services supplied by third parties is
made only for information purposes and is not binding in any
case.
aprilia s.p.a takes no responsibility as to the performance or the
use of said products.
First edition: january 1998
Reprint: march 1998
Produced and printed by:
Studio Tecno Public
Viale del Progresso - 37038 Soave (VR) - Italy
Tel. +39 (0)45 -76 11 911
Fax +39 (0)45 -76 12 241
www.stp.it
E-mail: customer@stp.it
On behalf of:
aprilia s.p.a.
via G. Galilei, 1 - 30033 Noale (VE) - Italy
Tel. +39 (0)41 - 58 29 111
Fax +39 (0)41 - 44 10 54
www.aprilia.com
use and maintenance
2
Sonic 50
FOREWORD
c
★
Before starting the engine, carefully read this manual, paying
particular attention to the chapter "RIDING SAFELY".
Your and other people’s safety depends not only on your quickness of reflexes and on your agility, but also on what you know
about the vehicle, on its efficiency and on your knowledge of the
basic information for RIDING SAFELY.
Therefore, get a thorough knowledge of the vehicle, in such a
way as to be able to drive in the traffic safely.
For the controls and repairs not expressly described in this manual, for the purchase of aprilia Genuine Spare Parts, accessories and other products, as well as for specific technical advice,
contact only aprilia Authorized Outlets and Official Dealers, who
can ensure you reliable and prompt servicing.
Thank you for choosing aprilia . We wish you a nice ride.
IMPORTANT:
When asking your Dealer for spare parts, specify the spare parts
code indicated on the SPARE PARTS IDENTIFICATION LABEL. Write down the identification code in the space here below,
in order to remember it also in case of loss or deterioration of the
label.
The label is positioned on the right beam of the frame; to read it,
remove the inspection cover, see p. 50 (REMOVING THE INSPECTION COVER).
aprilia
GR NL CH DK J SGP PL IL ROK
MAL RCH BM USA AUS
CODICE RICAMBI spare parts code number
ABCDE
N˚
IUKAPSFB D F E
I.M.
Carefully observe the instructions preceded by the following
warning signs:
a
In this manual the various versions are indicated by the following
symbols:
Safety norms and regulations to protect the driver
and other people from severe injuries or grave risks.
Indications to make the operations easier. Technical
information.
The operations preceded by this symbol must be repeated on the opposite side of the vehicle.
automatic light switching version (Automatic Switch-on Device)
_
optional
&
liquid-cooled version
1
catalytic version
2
Italy version
I
United Kingdom version
U
Austria version
A
Portugal version
P
Finland version
"
Belgium version
B
Germany version
D
France version
F
Spain version
E
Greece version
G
Holland version
O
Switzerland version
C
Denmark version
£
Japan version
J
Singapore version
S
Poland version
V
Israel version
%
South Korea version
K
Malaysia version
M
Chile version
R
Bermuda version
Q
United States of America version
-
Australia version
^
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3
TABLE OF CONTENTS
SAFE DRIVE ...............................................................5
BASIC SAFETY RULES ......................................6
CLOTHING ..........................................................9
ACCESSORIES .................................................10
LOAD .................................................................10
ARRANGEMENT OF THE MAIN ELEMENTS ........12
ARRANGEMENT OF THE INSTRUMENTS ............14
INSTRUMENTS AND INDICATORS ........................14
INSTRUMENT AND INDICATOR TABLE .........15
MAIN INDEPENDENT CONTROLS .........................16
CONTROLS ON THE LEFT SIDE
OF THE HANDLEBAR ......................................16
CONTROLS ON THE RIGHT SIDE
OF THE HANDLEBAR ......................................17
IGNITION SWITCH ...........................................18
STEERING LOCK .............................................18
AUXILIARY EQUIPMENT ........................................19
UNLOCKING/LOCKING THE SADDLE ............19
CRASH HELMET / GLOVE COMPARTMENT ..19
ANTI-THEFT HOOK ..........................................19
TOOL KIT ..........................................................20
BAG HOOK .......................................................20
GLOVE COMPARTMENT .................................20
MAIN COMPONENTS ..............................................21
FUEL .................................................................21
2 STROKE OIL TANK .......................................22
BRAKE FLUID - recommendations ...................22
FRONT BRAKE DISC .......................................23
REAR DRUM BRAKE ........................................24
TYRES ...............................................................25
COOLANT
AUTOMATIC
LIGHT SWITCHING VERSION
CATALYTIC SILENCER
INSTRUCTIONS FOR USE ......................................29
PRELIMINARY CHECKING OPERATIONS ......29
STARTING ........................................................30
DEPARTURE AND DRIVE ................................32
RUNNING-IN .....................................................33
1
..................................................26
..................28
_
.............................28
2
STOPPING ........................................................33
PARKING ..........................................................33
POSITIONING THE VEHICLE
ON THE STAND ................................................34
SUGGESTIONS TO PREVENT THEFT ............34
MAINTENANCE .......................................................35
REGULAR SERVICE INTERVALS CHART ......35
IDENTIFICATION DATA ...................................36
AIR CLEANER ...................................................37
CHECKING
THE TRANSMISSION OIL LEVEL ....................38
CHANGING
THE TRANSMISSION OIL ................................39
FRONT WHEEL ................................................40
REAR WHEEL ...................................................42
CHECKING
THE BRAKE PAD WEAR ..................................43
CHECKING
THE SHOE WEAR ............................................44
GREASING
THE REAR BRAKE CAM PIN ...........................44
CHECKING THE STEERING ............................46
CHECKING
THE ENGINE FULCRUM AXIS .........................46
REMOVING
THE EXHAUST SILENCER ..............................47
REMOVING
THE FRONT HANDLEBAR COVER .................48
REMOVING
THE REAR HANDLEBAR COVER ....................48
REMOVING
THE FRONT TRANSPARENT SCREEN...........49
REMOVING
THE REAR-VIEW MIRROR ..............................49
REMOVING
THE INSPECTION COVER ...............................50
REMOVING THE FRONT COVER
OF THE REAR PART OF THE FAIRING ..........50
IDLING ADJUSTMENT .....................................51
ADJUSTING
THE ACCELERATOR CONTROL .....................51
SPARK PLUG ....................................................52
BATTERY ..........................................................53
LONG INACTIVITY OF THE BATTERY ............53
CHECKING AND CLEANING
THE TERMINALS ..............................................54
REMOVING THE BATTERY .............................54
CHECKING
THE ELECTROLYTE LEVEL ............................55
RECHARGING THE BATTERY ........................55
INSTALLING THE BATTERY ............................55
CHANGING THE FUSE ....................................56
ADJUSTING
THE VERTICAL HEADLIGHT BEAM ................57
BULBS ...............................................................57
CHANGING THE HEADLIGHT BULBS .............58
CHANGING THE HEADLIGHT BULBS
C
%
S
CHANGING THE FRONT
DIRECTION INDICATOR BULBS .....................60
CHANGING THE DASHBOARD BULBS ..........61
CHANGING THE REAR LIGHT BULB ..............62
CHANGING THE NUMBER PLATE BULB
A
C
%
TRANSPORT ............................................................63
DRAINING THE FUEL TANK ............................63
CLEANING ...............................................................64
LONG PERIODS OF INACTIVITY ....................65
AFTER A PERIOD OF INACTIVITY ..................65
TECHNICAL DATA ..................................................66
LUBRICANT CHART .........................................70
Importers ...........................................................71
WIRING DIAGRAM Sonic 50 ............................72
WIRING DIAGRAM KEY Sonic 50 ....................73
WIRING DIAGRAM
C
Sonic 50
WIRING DIAGRAM KEY
Sonic 50
C
.......................................59
K
_
S
K
_
................................62
%
S
K
S
K
_
_
%
.........................74
.........................75
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Sonic 50
safe drive
BASIC SAFETY RULES
To drive the vehicle it is necessary to be in
possession of all the requirements prescribed by law (driving licence, minimum
age, psychophysical ability, insurance,
state taxes, vehicle registration, number
plate, etc.).
Gradually get to know the vehicle by driving it first in areas with low traffic and/or private areas.
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Sonic 50
The use of medicins, alcohol and drugs or
psychotropic substances notably increases
the risk of accidents.
Be sure that you are in good psychophysical conditions and fit for driving and pay
particular attention to physical weariness
and drowsiness.
Most road accidents are caused by the
driver’s lack of experience.
NEVER lend the vehicle to beginners and,
in any case, make sure that the driver has
all the requirements for driving.
¡
STOP150 m
150m
STOP
Rigorously observe all road signs and national and local road regulations.
Avoid abrupt movements that can be dangerous for yourself and other people (for
example: rearing up on the back wheel,
speeding, etc.), and give due consideration
to the road surface, visibility and other driving conditions.
Avoid obstacles that could damage the vehicle or make you lose control.
Avoid riding in the slipstream created by
preceding vehicles in order to increase
your speed.
Always drive with both hands on the handlebars and both feet on the footrests, in
the correct driving posture.
Avoid standing up or stretching your limbs
while driving.
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7
OIL
COOLER
The driver should pay attention and avoid
distractions caused by people, things and
movements (never smoke, eat, drink, read,
etc.) while driving.
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Sonic 50
Use only the vehicle’s specific fuels and lubricants (indicated in the “LUBRICANT
CHART”); check all oil, fuel and coolant
levels regularly.
If the vehicle has been involved in an accident, make sure that no damage has occurred to the control levers, pipes, wires,
braking system and vital parts.
If necessary, have the vehicle inspected by
an aprilia Official Dealer, who should carefully check the frame, handlebars, suspensions, safety parts and all the devices that
you cannot check by yourself.
Always remember to report any malfunction to the technicians to help them in their
work.
Never use the vehicle when the amount of
damage it has suffered endangers your
safety.
A12
345
ONLY ORIGINALS
Never change the position, inclination or
colour of: number plate, direction indicators, lights and horns.
Any modification of the vehicle will result in
the invalidity of the guarantee.
Any modification of the engine or of other
members which is aimed at increasing the
speed or the power of the vehicle is prohibited by the law; in fact, any modification resulting in an increase of the maximum
speed or of the engine displacement would
change the scooter into a motorcycle,
which implies the following obligations for
the owner:
– new homologation;
– new registration;
– appropriate driving license.
Further, said modifications cause the loss
of the insurance cover, since insurance
policies expressly prohibit to make technical changes aimed at increasing the vehicle performance levels.
For the reasons stated above, the failure to
comply with the tampering prohibition is
punished by law with apposite sanctions
(including the confiscation of the vehicle),
which, according to the case, can be combined with the sanctions provided for not
using the crash helmet and/or the number
plate, for the violation of fiscal obligations
(ownership tax) and with penal sanctions
provided for using the vehicle without driving license.
Never race with other vehicles.
Avoid off-road driving.
CLOTHING
Before starting, always wear a correctly
fastened crash helmet. Make sure that it is
homologated, in good shape, of the right
size and that the visor is clean.
Wear protective clothing, preferably in light
and/or reflecting colours. In this way you
will make yourself more visible to the other
drivers, thus notably reducing the risk of
being knocked down, and you will be more
protected in case of fall. This clothing
should be very tight-fitting and fastened at
the wrists and ankles. Strings, belts and
ties should not be hanging loose; prevent
these and other objects from interfering
with driving by getting entangled with moving parts or driving mechanisms.
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9
Do not keep objects that can be dangerous
in case of fall, for example pointed objects
like keys, pens, glass vials etc. in your
pockets (the same recommendations also
apply to passengers).
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Sonic 50
ACCESSORIES
The owner of the vehicle is responsible for
the choice, installation and use of any accessory.
Avoid installing accessories that cover
horns or lights or that could impair their
functions, limit the suspension stroke and
the steering angle, hamper the operation of
the controls and reduce the distance from
the ground and the angle of inclination in
turns. Avoid using accessories that hamper access to the controls, since this can
prolong reaction times during an emergency. Large fairings and windscreens assembled on the vehicle can produce aerodynamic forces capable of compromising the
stability of the vehicle while driving. Make
sure that the equipment is well fastened to
the vehicle and not dangerous during driving.
Do not install electrical devices and do not
modify those already existing to avoid electrical overloads, because the vehicle could
suddenly stop or there could be a dangerous current shortage in the horn and in the
lights. aprilia recommends the use of
“ aprilia genuine accessories”.
LOAD
Be careful and moderate when loading
your luggage. Keep any luggage loaded as
close as possible to the centre of the vehicle and distribute the load uniformly on
both sides, in order to reduce imbalance to
the minimum. Furthermore, make sure that
the load is firmly secured to the vehicle, especially during long trips.
KG!
Avoid hanging bulky, heavy and/or dangerous objects on the handlebars, mudguards
and forks, because the vehicle might respond more slowly in turns and its manoeuvrability could be unavoidably impaired.
Do not place bags that are too bulky on the
vehicle sides, because it could hit people
or obstacles making you lose control of the
vehicle.
Do not carry any bag if it is not tightly secured to the vehicle.
Do not carry bags which protrude too much
from the luggage-rack or which cover the
lights, horn or indicators.
Do not carry animals or children on the
glove compartment or on the luggage-rack.
Do not exceed the maximum load allowed
for each side-bag.
When the vehicle is overloaded, its stability
and its manoeuvrability can be compromised.
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11
ARRANGEMENT OF THE MAIN ELEMENTS
KEY
1) Bag hook
2) Fuel tank
3) Fuel tank plug
4) Saddle lock
5) Transmission oil filling cap
6) Kick starter
7) Transmission oil drain plug
8) Centre stand
9) Air cleaner
10) Side stand
&
11) Horn
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Sonic 50
KEY
1) 2 stroke oil tank plug
2) 2 stroke oil tank
3) Glove compartment
4) Ignition switch/steering lock
5) Brake fluid reservoir (front brake)
6) Coolant expansion tank plug
7) Expansion tank
1
8) Front cover of the rear part of the fairing
9) Inspection cover
10) Battery
11) Fuse carrier
12) Anti-theft hook (for the aprilia “BodyGuard” armored cable
&
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Sonic 50
).
13
ARRANGEMENT OF THE INSTRUMENTS
INSTRUMENTS AND INDICATORS
KEY
1) Direction indicator switch (
2) Horn push button (
3) Cold start lever (
4) Rear brake lever
5) Left rear-view mirror (not provided in the
6) Instruments and indicators
7) Right rear-view mirror (in the countries where required)
8) Front brake lever
9) Throttle grip
10) Headlight switch (
10a) Headlight switch (
10b) Headlight dimmer switch (
11) Start push button (
12) Ignition switch/steering lock (
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e
Sonic 50
b
a
r
f
)
c
)
-
-
b
)
)
version)
U
)
•
-
)
_
-
S
K
s
)
C
%
•
a
b
-
)
n
-
m
KEY
1) Fuel level indicator (
2) Speedometer
3) Total kilometres odometer
4) Coolant temperature indicator (
5) Green direction indicator warning light (
6) Red 2 stroke oil reserve warning light (
7) Green low beam warning light (
7a) Blue high beam warning light (
8) Amber low fuel warning light (
g
)
h
)
1
c
)
j
C
%
)
S
K
_
b
a
)
)
g
)
INSTRUMENT AND INDICATOR TABLE
Description Function
Direction indicator warning light (
2 stroke oil reserve warning light (
Total kilometres odometer
Speedometer
Low beam warning light (b)
High beam warning light
C % S K _
Low fuel warning light (g)
Fuel level indicator (
Coolant temperature indicator
1
c
j
(a)
g) It indicates the approximate fuel level in the tank.
(h)
It blinks when the direction indicators are on.
It comes on when the ignition switch is in position “
“
“ is pressed, thus checking the proper functioning of the bulb.
r
If the light does not come on during the starting, provide for replacing the bulb.
If the warning light comes on and does not go out after the start
a
used; in this case, top up the 2 stroke oil tank, see p. 22 (2 STROKE OIL
TANK).
It indicates the total number of kilometres covered.
It indicates the driving speed.
It comes on when the headlight is in low beam position.
It comes on when the headlight in high beam position.
It comes on when the quantity of fuel left in the tank is about 1,5
It indicates the approximate temperature of the coolant in the engine.
When the pointer starts moving beyond the “min” level, the temperature is sufficient for driving the vehicle.
The normal running temperature range is indicated by the central area of the
scale.
If the pointer reaches the red area, stop the engine and check the coolant level,
see p. 26 (COOLANT
push button “
mal functioning, this means that the 2 stroke oil reserve is being
r
” has been released, or if it comes on during nor-
).
1
n
” and the start push button
l.
a
If the maximum allowed temperature is exceeded (red area “max”
of the scale), the engine may be seriously damaged.
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Sonic 50
)
)
15
MAIN INDEPENDENT CONTROLS
c
c
CONTROLS ON THE LEFT SIDE OF THE HANDLEBAR
The electrical parts work only when the ignition
switch is in position “
The lighting system works only when the engine is
running.
n
”.
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Sonic 50
1) HORN PUSH BUTTON (
The horn is activated when the push button is pressed.
2) COLD START LEVER (
The starter for the cold start of the engine is operated by rotating the lever downwards.
To disconnect the cold start, bring the lever to its initial position.
3) DIRECTION INDICATOR SWITCH (
To indicate the turn to the left, move the switch to the left; to
indicate the turn to the right, move the switch to the right.
To turn off the direction indicator, press the switch.
)
)
)
f
e
c
CONTROLS ON THE RIGHT SIDE OF THE HANDLEBAR
c
c
1) LIGHT SWITCH (
1a) LIGHT SWITCH (
1b) DIMMER SWITCH (a - b)
2) START PUSH BUTTON (
The electrical parts work only when the ignition
switch is in position “
The lighting system works only when the engine is
running.
b
When the light switch is in position “
the switch is in position “
beam are on.
-
a
When the light switch is in position “•”, the lights are off;
when the switch is in position “b” the low beam and the
parking lights are on; when it is in position “a” the high
beam and the parking lights are on.
When the dimmer switch is in position “
and the parking lights are on; when it is in position “
high beam and the parking lights are on.
c
The lights can be switched off only by stopping
the engine.
n
”.
•
”, the lights are off; when
_
•
K
”, the rear parking light and the low
b
-
b
- •) C % S
b”, the low beam
a”, the
r)
When the start push button is pressed and one of the brake
levers (front or rear) is activated at the same time, the starter
makes the engine run.
For the starting procedure, see p. 30 (STARTING).
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Sonic 50
)
17
Position
s
Steering
lock
Function
The steering
is locked.
It is neither
possible to
start the engine, nor to
switch on the
lights.
Key
removal
It is possible
to remove
the key.
IGNITION SWITCH
The ignition switch is positioned on the
right side, near the steering column.
c
partment and the saddle lock.
Two keys are supplied together with the
vehicle (one spare key).
18
The key (1) operates the ignition
switch/steering lock, glove com-
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Sonic 50
STEERING LOCK
Never turn the key to position “
running conditions, in order to avoid
losing control of the vehicle.
OPERATION
To lock the steering:
◆
Turn the handlebar completely leftwards.
◆
Turn the key (1) to position “
press it.
◆
Release the key.
Turn the key and steer the han-
c
dlebar at the same time.
◆
Rotate the key (1) anticlockwise (leftwards), steer the handlebar slowly until
the key (1) reaches position “
◆
Extract the key.
s
” in
m
” and
s
”.
m
n
Neither the
engine, nor
the lights can
be switched
on.
The engine
and the lights
can be
switched on.
It is possible
to remove
the key.
It is not possible to remove the
key.
AUXILIARY EQUIPMENT
UNLOCKING/LOCKING THE SADDLE
To unlock and lift the saddle:
◆
Insert the key in the saddle lock (1).
◆
Turn the key clockwise and raise the
saddle (2).
c
not left the key in the crash helmet/glove compartment.
◆
a
Before lowering and locking the
saddle, make sure that you have
To lock the saddle, lower and press it
(without exerting too much pressure),
thus making the lock snap shut.
Before leaving, make sure that
the saddle is properly locked.
CRASH HELMET / GLOVE COMPARTMENT
Thanks to the crash helmet/glove compartment, you no longer have to carry the
crash helmet or other objects with you every time you park the vehicle.
The compartment is positioned under the
saddle.
To reach it:
◆
Raise the saddle, see beside (UNLOCKING/LOCKING THE SADDLE).
Position the helmet with the
c
shown in the figure.
Maximum allowed weight: 2.5 kg.
opening facing upwards, as
Do not load the crash helmet/glove compartment too
a
much.
ANTI-THEFT HOOK
The anti-theft hook (3) is positioned on the
rear side of the vehicle, near the rear light.
To prevent the vehicle from being stolen, it
is advisable to secure it with the aprilia
“Body-Guard” armored cable
able at any aprilia Official Dealer.
Do not use the hook to lift the ve-
a
has been parked.
hicle or for any purpose other
than securing the vehicle once it
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(4), avail-
&
Sonic 50
19
TOOL KIT
The tool kit is hooked to the underside of
the saddle.
To reach it, proceed as follows:
◆
Lift the saddle (1), see p. 19 (UNLOCKING/LOCKING THE SADDLE).
◆
Release the rubber band (2) from the
hook.
◆
Take the tool kit (3).
The tool kit (3) includes:
– n. 1 tool case
– n. 1 21 mm spark plug socket spanner
– n. 1 socket spanner rod
– n. 1 8/10 mm socket spanner
– n. 1 double-ended, cross-/cut headed-
screwdriver type PH size 2
– n. 1 screwdriver handle
– n. 1 3 mm hexagon spanner
– n. 1 4 mm hexagon spanner
Maximum allowed weight: 1.5 kg.
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20
Sonic 50
BAG HOOK
Do not hang excessively bulky
bags or parcels to the hook, as
a
this may seriously compromise
the manoeuvrability of the vehicle or
the movement of your feet.
The bag hook (4) is positioned on the front
part of the inner shield.
Max. allowed weight: 1.5 kg.
GLOVE COMPARTMENT
It is placed under the handlebar, on the inner part of the shield.
To reach it:
◆
Introduce the ignition key (5) in the lock.
◆
Turn the key clockwise, pull it and open
the door (6).
Before locking the door, make
sure that you have not left the
a
key in the glove compartment.
To lock the door (6), raise and press it. It is
not necessary to use the key.
Maximum allowed weight: 1.5 kg.
MAIN COMPONENTS
Further, prevent fuel from flowing out of
the fuel filler, as it could catch fire when
getting in contact with the red-hot surfaces of the engine.
In case some fuel has accidentally been
spilt, make sure that the area has completely dried and before starting the vehicle verify that there is no fuel inside
the fuel filler neck.
FUEL
The fuel used for internal com-
a
ditions it can become explosive.
It is important to carry out the refuelling
and the maintenance operations in a
well-ventilated area, with the engine off.
Do not smoke while refuelling or near
fuel vapours, in any case avoid any contact with naked flames, sparks and any
other heat source to prevent the fuel
from catching fire or from exploding.
bustion engines is extremely inflammable and in particular con-
Since petrol expands under the heat of
the sun and due to the effects of sun radiation, never fill the tank to the brim.
Screw the plug (1) up carefully after refuelling.
Avoid any contact of the fuel with the
skin and the inhalation of vapours; do
not swallow fuel or pour it from a receptacle into another by means of a tube.
KEEP AWAY FROM CHILDREN
Use only premium grade petrol (4 Stars
), in conformity with the DIN 51600
U
standard, min. O.N. 98 (N.O.R.M.) and 88
(N.O.M.M.).
Use only unleaded petrol, in conformity
2
with the DIN 51607 standard, min. O.N. 95
(N.O.R.M.) and 85 (N.O.M.M.).
FUEL TANK CAPACITY
(reserve included): 8
TANK RESERVE: 1.5
To refuel, proceed as follows:
◆
Lift the saddle, see p. 19 (UNLOCKING/LOCKING THE SADDLE).
◆
Unscrew and remove the fuel tank plug
(1).
◆
Refuel.
l
l
use and maintenance
Sonic 50
21
2 STROKE OIL TANK
Top up the 2 stroke oil tank every 500 km.
The vehicle is provided with a separate
mixer that makes it possible to mix petrol
with oil for the lubrication of the engine, see
p. 70 (LUBRICANT CHART).
The reserve is indicated by the coming on
of the 2 stroke oil reserve warning light
“
j
” positioned on the dashboard, see p.
14 and 15 (INSTRUMENTS AND INDICATORS).
The use of the vehicle without 2
a
If you run out of oil in the 2 stroke oil
tank or if the mixer oil pipe has been removed, it is necessary to contact an
aprilia
for bleeding the system.
stroke oil causes serious damages to the engine.
Official Dealer, who will provide
This operation is indispensable, since
the operation of the engine with air in
the mixer oil system may cause serious
damages to the engine itself.
To top up the 2 stroke oil tank, proceed as
follows:
◆
Lift the saddle, see p. 19 (UNLOCKING/LOCKING THE SADDLE).
◆
Remove the plug (1).
2 STROKE OIL TANK CAPACITY: 1.6
TANK RESERVE: 0.5
Wash your hands carefully after
using the oil.
a
Do not dispose of the oil in the
environment.
KEEP AWAY FROM CHILDREN.
BRAKE FLUID - recommendations
Sudden resistance or clearance
problems on the brake lever may
a
be due to problems in the hy-
draulic system.
For any doubt regarding the perfect
functioning of the braking system and
in case you are not able to carry out the
usual checking operations, contact
your
aprilia
Official Dealer.
l
l
Make sure that the brake disc and the
friction elements are neither oily nor
greasy, especially after maintenance or
checking operations.
Check that the brake cable is neither
twisted nor worn out.
Prevent water or dust from accidentally
getting into the circuit.
In case maintenance operations are to
be performed on the hydraulic circuit, it
is advisable to use latex gloves.
If the brake fluid gets in contact with the
skin or the eyes, it can cause serious irritations.
Carefully wash the parts of your body
that get in contact with the liquid.
Consult a doctor or an oculist if the liquid gets in contact with your eyes.
Do not dispose of the brake fluid in the
environment.
KEEP AWAY FROM CHILDREN
When using the brake fluid, take
care not to spill it on the plastic
a
or painted parts, since it irrepa-
rably damages them.
use and maintenance
22
Sonic 50
FRONT BRAKE DISC
The brakes are the parts that
a
perfectly working.
The brake fluid must be changed once a
year by an
This vehicle is provided with front hydraulic
disc brake.
When the disc pads wear out, the level of
the fluid decreases to automatically compensate for their wear.
The brake fluid reservoir (1) is positioned
near the front brake lever coupling. Periodically check the brake fluid level in the reservoir (1) and the pad wear, see p. 43
(CHECKING THE BRAKE PAD WEAR).
most ensure your safety and for
this reason they must always be
aprilia
Official Dealer.
CHECKING
To check the brake fluid level, proceed as
follows:
◆
Position the vehicle on the centre stand.
◆
Rotate the handlebar leftwards, so that
the fluid contained in the reservoir is parallel to the “ MIN ” mark stamped on the
glass (2).
◆
Make sure that the level of the brake fluid
contained in the tank exceeds the “ MIN ”
mark stamped on the glass (2).
◆
If not, provide for topping up.
TOPPING UP
Carefully read p. 22 (BRAKE FLUID -
recommendations).
The brake fluid may flow out of
the reservoir. Do not operate the
a
loose or, most important, if the brake
fluid tank cover has been removed.
brake lever if the screws (3) are
◆
Unscrew the two screws (3).
◆
Remove the cover (4).
◆
Remove the guide cover (5).
In order not to spill the brake fluid
a
voir rim.
◆
(2) completely, with the brake fluid reservoir rim parallel to the ground.
The fluid level decreases progressively
with the pad wear.
Do not top up to the “MAX” level with
worn pads, since this may cause an outflow of liquid when the brake pads are
changed.
◆
◆
◆
◆
◆
while topping up, keep the fluid in
the reservoir parallel to the reser-
Remove the gasket (6).
In order to reach the “MAX” level,
c
top up until covering the glass
The topping up to the “MAX” level can be carried out only with
a
new pads.
Fill the tank with brake fluid, see p. 70
(LUBRICANT CHART), until it covers the
glass completely.
Put back the gasket (6) in its seat correctly.
Put back the guide cover (5) correctly.
Put back the cover (4).
Screw and tighten the two screws (3).
use and maintenance
Sonic 50
23
Check the braking efficiency. If
a
In case of excessive movement of the
brake lever, of excessive elasticity or in
case there is air in the circuit, contact
your
be necessary to bleed the system.
24
necessary, contact your
Official Dealer.
aprilia
use and maintenance
Official Dealer, since it may
Sonic 50
aprilia
REAR DRUM BRAKE
The brakes are the parts that
most ensure your safety and for
a
this reason they must always be
perfectly working.
For any doubt regarding the perfect
functioning of the braking system and
in case you are not able to carry out the
usual checking operations, contact
your
aprilia
Official Dealer.
ADJUSTING THE BRAKE
◆
Measure the distance covered by the lever before the brake starts it braking action. The idle stroke at the end of the
brake lever must be about 10 mm.
◆
Adjust the clearance by acting on the adjuster (1).
◆
Put on the brake repeatedly and make
sure that the wheel turns freely after the
brake has been released.
◆
Check the braking efficiency.
The fact that the adjuster (1) can be
tightened completely or the indicator (2)
is positioned beyond the reference
tooth (3) indicates that the brake shoes
are worn; in this case, see p. 44
(CHECKING THE SHOE WEAR).
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