2003 Hyundai Atos engine

DO-IT-YOURSELF MAINTENANCE 6-7
4. Turn the radiator cap counterclockwise with-out pressing down on it, until it stops. This relieves any pressure remaining in the cool-ing system. And remove the radiator cap bypushing down and turning counterclockwise. Now fill the radiator with clean demineral- ized or distilled water. Continue to add cleandemineralized or distilled water in small quan-tities until the fluid level stays up in theradiator neck.SSA6060A
Unleaded: 1.0 ~ 1.1 mm (0.039 ~ 0.043 in.) Leaded: 0.8 ~ 0.9 mm (0.031 ~ 0.035 in.)
G060B02A-GAT
REPLACING THE SPARK PLUGS
The spark plugs should be changed at the
intervals specified in the vehicle maintenance schedule in Section 5 or whenever engine per-formance indicates they should be changed.Symptoms that suggest poor spark plug perfor-mance include engine misfiring under load, lossof fuel economy, poor acceleration, etc. Whenspark plugs are replaced, always use sparkplugs recommended by Hyundai. The use ofother spark plugs can result in loss of perfor-mance, radio interference or engine damage.
NOTE: When replacing the spark plug, always use
the genuine parts recommended.
G050D02X
5. Start the engine, top off the radiator with water and then add engine coolant to the reservoir until the level is between "LOW"and "FULL".
6. Replace the radiator and reservoir caps and check to be sure the drain cocks are fullyclosed and not leaking.
WARNING: The cooling fan is controlled by engine cool-
ant temperature and may sometimes oper- ate even when the engine is not running.Use extreme caution when working near theblades of the cooling fan so that you are notinjured by a rotating fan blade. As the en-gine coolant temperature decreases, the fanwill automatically shut off. This is a normalcondition.
G050B01A

DO-IT-YOURSELF MAINTENANCE
6-8 NOTE: Spark plugs should be tightened firmly. Over- tightening can damage the threads in thealuminum cylinder head. Also, leaving them
too loose can cause the spark plug to getvery hot and possibly result in damage tothe engine.
6. Replace the cable by pushing the insulated connector directly down onto the electrode.Check to be sure it has snapped into placeand can't fall off.
G060C03A
G060C02A-AAT
Changing the Spark Plugs
Unleaded
RC9YC4
RC10YC4
BKR5ES-11
NGK Leaded
RC9YC
RC10YC BKR5ES
CHAMPION
G060C01A
You will find it easier to change spark plugs if
the engine is cold. Always change one spark
plug at a time. This helps avoid getting the wiresmixed up.
1. Using a clean cloth, remove any dirt that has accumulated around the base of the spark plug so it cannot fall into the cylinder whenthe spark plug is removed. WARNING: It is recommended that the engine be cool
or cold when changing the spark plugs. If the engine is hot, you could burn yourselfon the insulated connector, the spark plugor the engine itself.
3. When preparing to remove the old spark plug, guide the socket down over the spark plug, being careful not to damage the ce-ramic insulator.
4. To remove the old spark plug, turn the wrench handle in a counterclockwise direc-tion.
5. To install the new spark plug, guide the socket down over the spark plug, beingcareful not to damage the ceramic insulator.
G060C02A
Recommended Spark Plugs:
2. To remove the spark plug cable, pull straight
up on the insulated connector, not the cable. Pulling on the cable may damage the carboncore conductor.

DO-IT-YOURSELF MAINTENANCE 6-9
G090A01X-GAT
FILLING THE WASHER RESERVOIR
The washer fluid reservoir supplies fluid to the
windshield washer system. A good quality washer fluid should be used to fill
the washer reservoir. The fluid level should be checked more frequently during bad weather orwhenever the washer system is in more fre-quent use.
The capacity of the washer reservoir is 2.5
liters (2.63 U.S. quarts).
CAUTION:
o Radiator antifreeze (engine coolant) should not be used in the washer systembecause it will damage the car's finish.
o The washer lever should not be pulled and the washer should not be operated ifthe washer reservoir is empty. This candamage the washer fluid pump.
G070A01X-GAT
CHANGING THE AIR CLEANER FIL- TER G080A02A-AAT
WINDSHIELD WIPER BLADES The wiper blades should be carefully inspected from time to time and cleaned to remove accu-mulations of road film or other debris. To cleanthe wiper blades and arms, use a clean spongeor cloth with a mild soap or detergent and water.If the wipers continue to streak or smear theglass, replace them with Genuine HyundaiReplacement Parts or their equivalent. CAUTION:
o Do not operate the wipers on dry glass. This can result in more rapid wear of the wiper blades and may scratch the glass.
o Keep the blade rubber out of contact with petroleum products such as engineoil, gasoline etc.
To change the filter, loosen the clamps (1) on
the cover. When this is done, the cover can be
lifted off, the old filter removed and the new filterput in its place. Genuine Hyundai replacement
parts are recommended.
CAUTION: Operating your vehicle without a proper air
filter in place can result in excessive engine wear.
G070A01X
(1)
AS60160AG090A01X

DO-IT-YOURSELF MAINTENANCE
6-10 G110A01A-AAT
CHECKING THE TRANSAXLE FLUID (AUTOMATIC)
Transaxle fluid in the automatic transaxle should be checked at those intervals specified in thevehicle maintenance schedule in Section 5. G110B01X-AAT Recommended Fluid Your Hyundai automatic transaxle is specially designed to operate with ESSO JWS3314. Dam-age caused by a nonspecified fluid is not cov-ered by your new vehicle limited warranty. G110C01X-GAT
Transaxle Fluid Capacity The fluid capacity of the automatic transaxle is
5.2 liters (5.48 U.S. quarts). WARNING: The transaxle fluid level should be checked
when the engine is at normal operating tem-perature. This means that the engine, radia-
tor, exhaust system etc., are very hot. Exer-
cise great care not to burn yourself duringthis procedure.
G100A04X-GAT CHECKING THE TRANSAXLE OIL (MANUAL) Transaxle lubricant in the manual and transaxle should be checked at those intervals specified in the vehicle maintenance schedule in Section5. Recommended Oil Use only HYUNDAI GENUINE PARTS MTF 75W/90 (API GL-4) in the manual transaxle. Manual Transaxle Oil Capacity The oil capacity of the manual transaxle is 2.45 liters (2.58 U.S. quarts). WARNING: It is always better to check the transaxle oil level when the engine is cool or cold. If theengine is hot, you should exercise greatcaution to avoid burning yourself on hotengine or exhaust parts. G100B01A-AAT
To check the Manual Transaxle Fluid Level
SSA6100B
Park the car on level ground with the engine off.
1. Using a wrench of the correct size, loosen the oil filler plug by turning it counterclock- wise and remove it with your fingers.
2. Use your finger or suitable tool to feel inside the hole. The oil level should be at its bottomedge. If it is not, check for leaks beforeadding oil. To refill the transaxle or bring theoil level up, add oil slowly until it reaches theproper level. Do not overfill.
3. Replace the plug and washer, screw it in with your fingers and then tighten securelywith the wrench.
G100A01X
Filler plug
Drain plug

DO-IT-YOURSELF MAINTENANCE 6-11
WARNING: The cooling fan is controlled by engine cool-
ant temperature and may sometimes oper- ate even when the engine is not running.Use extreme caution when working near theblades of the cooling fan, so that you are notinjured by a rotating fan blade. As the en-gine coolant temperature decreases, the fanwill automatically shut off. This is a normalcondition.
G120C02A-AAT
Recommended Brake Fluid
Use only hydraulic brake fluid conforming to
DOT 3 or DOT 4 specifications in your braking G120A01A-AAT
CHECKING THE BRAKES
CAUTION: Because brakes are essential to the safe
operation of the car, it is suggested that they be checked and inspected by yourHyundai dealer. The brakes should bechecked and inspected for wear at thoseintervals specified in the vehicle mainte-nance schedule in Section 5.
G120B01A-AAT
Checking the Brake Fluid Level
WARNING: Use caution when handling brake fluid. It
can damage your vision if it gets into your eyes. It will also damage your vehicle's paintif spilled on it and not removed immediately.
G110D02A-GAT
To Check the Automatic Transaxle Fluid Level
Park the car on level ground with the parking
brake engaged. When the transaxle fluid level is checked, the transaxle fluid should be atnormal operating temperature and the engineidling. While the engine is idling, apply the brakes andmove the gear selector lever from "P" to eachof its other positions — "R", "N", "D", "2", "L" —and then return to "N" or "P" with the engine stillidling:
1. Open the hood, being careful to keep hands,
long hair and clothing clear of any moving parts.
2. Remove the transaxle dipstick, wipe it clean, reinsert the dipstick as far as it will go, thenremove it again. Now check the fluid level onthe dipstick. It should be in the "HOT" rangeon the dipstick.
Fluid level should be within this range
3. If the transaxle fluid level is low, use a funnel to add transaxle fluid through the dipsticktube until the level reaches the "HOT" range.Do not overfill.
C090B01X
G110D02A
G110D03A

DO-IT-YOURSELF MAINTENANCE
6-12 G140B01A-AAT
Checking the Air Conditioning Opera- tion
1. Start the engine and let it run at a fast idle for
several minutes with the air conditioning set at the maximum cold setting.
2. If the air coming out of the in-dash vents is not cold, have the air conditioning systeminspected by your Hyundai dealer.
CAUTION: Running the air conditioning system for ex- tended periods of time with a low refrigerantlevel may damage the compressor.
When the air conditioning is being used regu-larly, the compressor drive belt tension shouldbe checked at least once a month. To check the drive belt tension, press down on the belt halfway between the engine crankshaftand compressor pulleys. Pressing with yourfinger, you should not be able to deflect this belt
anymore than 5 - 5.5 mm. If you have theinstruments to check it with a force of 98N (22lb.), the deflection should be approx. 5 - 5.5(0.197 - 0.217 inches). If the belt is too loose,have it adjusted by your Hyundai dealer.
G120D01A-AAT
To Check the Fluid Level The fluid level in the brake fluid reservoir should
be checked periodically. The level should bebetween the "MIN" and "MAX" marks on theside of the reservoir. If the level is at or belowthe "MIN" mark, carefully add fluid to bring it upto "MAX". Do not overfill.
G120E02A-AAT
Adding Brake Fluid
WARNING: Handle brake fluid carefully. It can damage
your vision if it gets into your eyes. Use only DOT 3 or DOT 4 specification fluid from asealed container. Do not allow the fluid canor reservoir to remain open any longer thanrequired. This will prevent entry of dirt and moisture which can damage the brake sys-tem and cause improper operation.
To add brake fluid, first wipe away any dirt then
unscrew the fluid reservoir cap. Slowly pour therecommended fluid into the reservoir. Do notoverfill. Carefully replace the cap on the reser-voir and tighten.
G120E01A
G140A01A-AAT
AIR CONDITIONER CARE Keeping the Condenser Clean
The air conditioner condenser (and engine ra-
diator) should be checked periodically for accu- mulation of dirt, dead insects, leaves, etc. Thesecan interfere with maximum cooling efficiency.When removing such accumulations, brush orhose them away carefully to avoid bending thecooling fans.
G140D01X-GAT
Checking the Compressor Drive Belt
A/C pulley
Crank pulley
G140D01X
5 ~ 5.5 mm
system. Follow the instructions printed on the container.

DO-IT-YOURSELF MAINTENANCE 6-13
G170A01A-GAT
CHECKING BRAKE PEDAL FREEPLAY
To check the steering wheel freeplay, stop the car with the wheels pointed straight ahead andgently move the steering wheel back and forth.Use very light finger pressure and be sensitiveto changes in resistance that mark the limits ofthe freeplay. If the freeplay is greater thanspecified, have it inspected by your Hyundaidealer and adjusted or repaired if necessary. G160A01A-GAT
CHECKING CLUTCH PEDAL FREEPLAY
SSA6160A
6 ~ 13 mm (0.24 ~ 0.51 in.)
With the engine off, press lightly on the clutch
pedal until you feel a change in resistance. This is the clutch pedal freeplay. The freeplay shouldbe within the limits specified in the illustration. Ifit is not, have it inspected by your Hyundaidealer and adjusted or repaired if necessary.
SSA6170A
3 ~ 8 mm (0.12 ~ 0.31 in.)
With the engine off, press down on the brake
pedal several times to reduce the vacuum in the brake booster.
Then, using your hand, press down slowly on
the brake pedal until you feel a change inresistance. This is the brake pedal freeplay.
The freeplay should be within the limits speci-
fied in the illustration. If it is not, have it in-spected by your Hyundai dealer and adjustedor repaired if necessary.
G140C01A-AAT
Lubrication
To lubricate the compressor and the seals in
the system, the air conditioning should be run for at least 10 minutes each week. This isparticularly important during cool weather whenthe air conditioning system is not otherwise inuse.
G150A01A-GAT
CHECKING STEERING WHEEL FREEPLAY
AS60260A
30 mm (1.18 in.)

DO-IT-YOURSELF MAINTENANCE
6-14 G200A01A-AAT CHECKING AND REPLACING FUSESReplacing a Fusible Link A fusible link will melt if the electrical circuits from the battery are ever overloaded, thus pre-venting damage to the entire wiring harness.(This could be caused by a short in the systemdrawing too much current.) If this ever happens,have a Hyundai dealer determine the cause,repair the system and replace the fusible link.The fusible links are located in a relay box foreasy inspection. CAUTION: When replacing a fusible link, never use anything but a new fusible link with thesame or lower amperage rating. Never use apiece of wire or a higher-rated fusible link.This could result in serious damage andcreate a fire hazard.
G200A01A
Bad
Good
G180A01A-GAT
CHECKING BRAKE PEDAL
CLEARANCE
SSA6180A
36 mm (1.42 in.)
You need a helper to check the brake pedal clearance. With the engine running, have yourhelper press down on the brake pedal severaltimes and then hold it down with a force of about490N (50kg, 110lbs). The brake pedal clear-ance is the distance from the top surface of thebrake pedal to the asphalt sheeting under thefloor mat. If the brake pedal clearance is not within the limits specified in the illustration, have it in-spected by your Hyundai dealer and adjustedor repaired if necessary.
G190A01A-GAT
CHECKING DRIVE BELTS
Water pump pulley
Crankshaft pulley
Drive belts should be checked periodically for
proper tension and adjusted if necessary. At the same time, belts should be examined for cracks,wear, fraying or other evidence of deteriorationand replaced if necessary. Belt routing should also be checked to be sure
there is no interference between the belts andother parts of the engine. After a belt is re-placed, the new belt should be adjusted againafter two or three weeks to eliminate slackresulting from initial stretching after use.
G190A01A
9.5~11.0 mm (0.37 ~ 0.43 in.)
Generator