2004 YAMAHA YFM350R oil filter

OPERATION ............................................6-1
Starting a cold engine ...........................6-3
Starting a warm engine .........................6-9
Warming up...........................................6-9
Drive select lever operation and
reverse driving ..................................6-11
Shifting ................................................6-15
To start out and accelerate .................6-17
To decelerate ......................................6-21
Engine break-in ...................................6-23
Parking ................................................6-27
Parking on a slope ..............................6-27
Accessories and loading .....................6-31
RIDING YOUR ATV..................................7-1
Getting to know your ATV .....................7-3
Ride with care and good judgement .....7-5
Be careful where you ride ...................7-27
Turning your ATV ................................7-39
Climbing uphill.....................................7-45
Riding downhill ....................................7-55
Crossing a slope .................................7-59
Crossing through shallow water ..........7-63
Riding over rough terrain ....................7-67
SLIDING AND SKIDDING...................7-69
What to do if .......................................7-73
What to do ..........................................7-73
67
PERIODIC MAINTENANCE AND ADJUST-
MENT ....................................................... 8-1
Owner’s manual and tool kit ................. 8-3
Periodic maintenance/lubrication.......... 8-7
Engine oil and oil filter element........... 8-15
Spark plug inspection ......................... 8-27
Air filter element cleaning ................... 8-31
Carburetor adjustment ........................ 8-39
Idle speed adjustment ........................ 8-41
Throttle lever adjustment .................... 8-43
Valve clearance adjustment ............... 8-43
Front brake pad inspection ................. 8-45
Rear brake pad inspection.................. 8-45
Brake fluid level check ........................ 8-47
Brake fluid replacement ...................... 8-51
Front brake lever free play.................. 8-53
Brake pedal height adjustment ........... 8-55
Parking brake adjustment ................... 8-57
Adjusting the rear brake light switch ... 8-63
Clutch lever free play adjustment ....... 8-65
Drive chain slack check ...................... 8-67
Drive chain slack adjustment .............. 8-69
Lubricating the drive chain.................. 8-71
Cable inspection and lubrication......... 8-73
Brake and shift pedal/brake and
clutch lever lubrication ...................... 8-73
8
E_5YTTOC-E.fm Page 2 Friday, December 12, 2003 4:01 PM

8-7
EBU00262
PERIODIC MAINTENANCE/LUBRICATION
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year
Valves*Check valve clearance.
Adjust if necessary.
Spark plugCheck condition.
Adjust gap and clean.
Replace if necessary.Air filter elementClean.
Replace if necessary.Every 20–40 hours
(More often in wet or dusty areas.)
Carburetor*Check starter (choke) operation.
Adjust engine idling speed.Crankcase breather
system*Check breather hose for cracks or damage.
Replace if necessary.Exhaust system*Check for leakage.
Tighten if necessary.
Replace gasket(s) if necessary.Fuel line*Check fuel hose for cracks or damage.
Replace if necessary.Engine oil
Replace. (Warm engine before draining.)Engine oil filter elementClean.
Replace if necessary.Engine oil strainer
Clean.Drive chain
Check and adjust slack/alignment/clean/lube.Brakes*Check operation/fluid leakage/See NOTE page 8-8.
Correct if necessary.Clutch*Check operation.
Adjust if necessary.Wheels*Check balance/damage/runout.
Replace if necessary.Wheel bearings*Check bearing assemblies for looseness/damage.
Replace if damaged.U5YT60.book Page 7 Friday, December 12, 2003 1:55 PM

8-15 1. Dipstick
2. Maximum level mark
3. Minimum level mark
4. Engine oil filler cap
1. Jauge
2. Repère de niveau maximum
3. Repère de niveau minimum
4. Bouchon de remplissage d’huile de moteur
1. Varilla
2. Marca de nivel máximo
3. Marca de nivel mínimo
4. Tapa del filtro de aceite de motor
EBU11812
Engine oil and oil filter element
The engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter element cleaned at the intervals speci-
fied in the periodic maintenance and lubrication
chart.
To check the engine oil level
1. Place the ATV on a level surface.
2. Warm up the engine for several minutes, and
then turn it off.
3. Wait a few minutes until the oil level settles
before checking.
4. Remove the engine oil filler cap, and then
wipe the dipstick off with a clean rag. Insert
the dipstick in the filler hole (without screwing
it in), and then remove it again to check the oil
level.NOTE:_ The oil level should be between the minimum and
maximum level marks. _
U5YT60.book Page 15 Friday, December 12, 2003 1:55 PM

8-19 1. Engine oil filter cover 2. Bolt (× 3)
3. Engine oil filter element 4. O-ring
1. Couvercle du filtre à huile de moteur 2. Boulon (× 3)
3.Élément du filtre à huile de moteur
4. Joint torique
1. Tapa del filtro de aceite de motor 2. Perno (× 3)
3. Elemento del filtro de aceite de motor
4. Junta tórica
NOTE:_ Skip steps 5–9 if the oil filter element is not being
cleaned. _5. Remove the oil filter cover by removing the
bolts, and then remove the oil filter element.
6. Clean the oil strainer and oil filter element
with solvent.
7. Check the O-ring for damage and replace it if
necessary.
8. Install the oil filter element and O-ring.NOTE:_ Make sure the O-ring is seated properly. _9. Install the oil filter cover by installing the bolts,
and then tighten them to the specified torque.
U5YT60.book Page 19 Friday, December 12, 2003 1:55 PM

8-21
10. Install the oil strainer, compression spring,
O-ring and engine oil drain bolt. Tighten the
engine oil drain bolt to the specified torque.CAUTION:_ Before installing the engine oil drain bolt, be
sure to install the O-ring, compression spring
and oil strainer. _11. Add the specified amount of the recommend-
ed engine oil, and then install and tighten the
engine oil filler cap. Tightening torque:
Oil filter cover bolt:
32 Nm (3.2 m·kgf)
Tightening torque:
Engine oil drain bolt:
10 Nm (1.0 m·kgf)
U5YT60.book Page 21 Friday, December 12, 2003 1:55 PM

8-23
CAUTION:_

In order to prevent clutch slippage (since
the engine oil also lubricates the clutch),
do not mix any chemical additives. Do not
use oils with a diesel specification of “CD”
or oils of a higher quality than specified. In
addition, do not use oils labeled “ENERGY
CONSERVING II” or higher.


Make sure that no foreign material enters
the crankcase.
_
Recommended oil:
See page 10-2.
Oil quantity:
Without oil filter element replacement:
2.5 L
With oil filter element replacement:
2.6 L
U5YT60.book Page 23 Friday, December 12, 2003 1:55 PM

8-35 1. Element retaining plate 2. Frame
3. Air filter element 4. Air filter element seat
1.Plaque de retenue 2.Armature
3.Élément du filtre à air 4. Siège de l’élément
1. Placa de retención del elemento 2. Bastidor
3. Element del filtro de aire 4. Asiento del elemento
del filtro de aire
6. Inspect the air filter element and replace it if
damaged.
7. Apply foam air filter oil to the air filter element.NOTE:_ The air filter element should be wet but not drip-
ping. _8. Pull the air filter element over its frame.
9. Apply all-purpose grease to the air filter ele-
ment seat.
10. Install the air filter element assembly.
11. Install the air filter case cover by hooking the
holders.
12. Install the seat.
U5YT60.book Page 35 Friday, December 12, 2003 1:55 PM

10-3
Quantity:
Without oil filter element replacement
With oil filter element replacement2.5 L
2.6 L
Air filter: Wet element
Fuel:
Type
Tank capacity
Reserve amountUnleaded gasoline only
For Europe: Regular unleaded gasoline only with a
research octane number of 91 or higher
9.0 L
2.7 L
Carburetor:
Type
× quantity
ManufacturerBSR36
× 1
MIKUNI
Spark plug:
Type/manufacturer
GapDR8EA / NGK
0.6–0.7 mm
Clutch:
Type
OperationWet, Multiple-disc
Left hand operation
Transmission:
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Transmission type
OperationSpur gear
76/24 (3.166)
Chain drive
38/13 (2.923)
Constant mesh, 6-speed forward, 1-speed reverse
Left foot operation MODEL YFM350
U5YT60.book Page 3 Friday, December 12, 2003 1:55 PM