Page 15 of 368

Spark plug inspection .........................8-21
Air filter cleaning .................................8-25
Carburetor settings .............................8-33
Idle speed adjustment ........................8-45
Throttle lever adjustment ....................8-47
Front brake shoe inspection ...............8-49
Rear brake pad inspection .................8-49
Front brake lever free play
adjustment ........................................8-51
Parking brake adjustment ...................8-55
Adjusting the rear brake light switch ...8-57
Clutch adjustment ...............................8-59
Autolube pump adjustment .................8-59
Drive chain slack check ......................8-61
Drive chain slack adjustment ..............8-63
Lubricating the drive chain .................8-65
Cable inspection and lubrication ........8-69
Brake and shift pedal/brake and
clutch lever lubrication ......................8-71
Upper arm and lower arm pivot
lubrication .........................................8-71Steering shaft lubrication ....................8-73
Wheel removal ...................................8-73
Wheel installation ...............................8-73
Replacing the headlight bulb ..............8-75
Headlight beam adjustment ................8-79
Tail/brake light bulb replacement .......8-81
Troubleshooting ..................................8-83
Troubleshooting chart .........................8-87
CLEANING AND STORAGE....................9-1
A. Cleaning ...........................................9-1
B. Storage ............................................9-7
SPECIFICATIONS .................................10-1
HOW TO USE THE CONVERSION
TABLE ....................................................11-1
9
10
11
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7-69
Test your brakes after leaving the water. Do not
continue to ride your ATV without verifying that
you have regained proper braking ability.
cC
After riding your ATV in water, be sure to
drain the trapped water by removing the
check hose at the bottom of the air filter
case. Wash the ATV in fresh water if it has
been operated in salt water or muddy condi-
tions.
q
1. Check hose1. Tuyau de contrôle1. Manguito de retención
5KJ-62 (7 shou) 4/23/01 3:06 PM Page 70
Page 255 of 368

8-7
EBU00262
PERIODIC MAINTENANCE/LUBRICATION
INITIAL EVERY
ITEM ROUTINE 1 3 6 6 1
month months months months year
Transmission9Replace oil.2 222
9Check condition.
Spark plug9Adjust gap and clean.22222
9Replace if necessary.
Air filter9Clean. Every 20 ~ 40 hours.
9Replace if necessary. (More often in wet or dusty areas)
* Carburetor9Check idle speed / starter operation.
2222
9Adjust if necessary.
* Crankcase breather9Check breather hose for cracks or damage.
222
system9Replace if necessary.
9Check for leakage.
* Exhaust system9Retighten if necessary.222
9Replace gasket if necessary.
* Fuel line9Check fuel hose for cracks or damage.
222
9Replace if necessary.
Throttle operation9Inspect and adjust free play if necessary.22222
Front brake operaion9Inspect and adjust free play if necessary.22222
* Front brake shoes9Check wear limit.
22
9Replace if necessary.
* Rear brake pads9Check pad wear.
222
9Replace if necessary.
* Clutch9Inspect free play and operation.
2 222
9Replace if necessary.
5KJ-62 (8 shou) 4/23/01 3:08 PM Page 8
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8-25
EBU00289
Air filter cleaning
NOTE:
There is a check hose at the bottom of the air fil-
ter case. If dust or water collects in this hose,
empty the hose and clean the air filter element
and air filter case.
1. Remove the seat.
2. Remove the air filter case cover.
q
q
1. Check hose1. Flexible de contrôle1. Manguito de comprobación
1. Air filter case cover
1. Cache du boîtier de filtre à air1. Tapa de la caja del filtro de aire
5KJ-62 (8 shou) 4/23/01 3:08 PM Page 26
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8-27
3. Remove the air filter element, and separate
it from the guide.
4. Wash the element gently but thoroughly in
solvent.
w
Always use parts cleaning solvent to clean
the air filter element. Never use low flash
point solvents or gasoline to clean the air fil-
ter element because the engine could catch
fire or explode.
5. Squeeze the excess solvent out of the filter
and let it dry.
cC
Do not twist the filter element when squeez-
ing it.
q
w
1. Air filter element 2. Element guide1. Elément du filtre à air 2. Guide de l’élément1. Elemento filtrante de aire 2. Guía del elemento
5KJ-62 (8 shou) 4/23/01 3:08 PM Page 28
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8-31
NOTE:
The air filter element should be cleaned every
20 ~ 40 hours. It should be cleaned and lubricat-
ed more often if the machine is operated in
extremely dusty areas. Each time filter element
maintenance is performed, check the air inlet to
the filter case for obstructions. Check the air
cleaner rubber joint to the carburetor and mani-
fold fittings for an air-tight seal. Tighten all fit-
tings securely to avoid the possibility of unfil-
tered air entering the engine.
cC
Never operate the engine with the air filter
element removed. This will allow unfiltered
air to enter, causing rapid engine wear and
possible engine damage. Additionally, opera-
tion without the filter element will affect car-
buretor jetting with subsequent poor perfor-
mance and possible engine overheating.
5KJ-62 (8 shou) 4/23/01 3:08 PM Page 32
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10-2
Model YFS200
Engine oil (2-cycle):
Type Air-cooled 2-stroke engine oil
Quantity 1.3 L
Transmission oil:
Type SAE 10W30 type SE motor oil
Recommended transmission oil
classificationAPI Service SE, SF, SG type or higher
cC
Be sure to use motor oils that do not contain
anti-friction modifiers. Passenger car motor
oils (often labeled “Energy Conserving”)
contain anti-friction additives which will
cause clutch and/or starter clutch slippage,
resulting in reduced component life and poor
engine performance.
Quantity:
Periodic oil change 0.65 L
Total amount 0.7 L
Air filter Wet type element
10
5KJ-62 (9 shou ~) 4/23/01 3:09 PM Page 13