2003 YAMAHA YFM350R oil type

5-13
EBU01180
Engine oil
Make sure the engine oil is at the specified level.
Fill with oil as necessary. (See pages 8-15–8-23
for details.)
Recommended oil:
Recommended engine oil classification:
API Service SE, SF, SG type or higher
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
U5NF62.book Page 13 Wednesday, May 8, 2002 1:40 PM

8-17 1. Drain bolt 2. O-ring
3. Compression spring 4. Oil strainer
1. Boulon de vidange 2. Joint torique
3. Ressort de compression 4. Crépine à huile
1. Perno de drenaje 2. Junta tórica
3. Muelle de compresión 4. Tamiz de aceite
5. If the engine oil is below the minimum level
mark, add sufficient oil of the recommended
type to raise it to the correct level.CAUTION:_ Be sure no foreign material enters the crank-
case. _6. Insert the dipstick into the oil filler hole, and
then tighten the engine oil filler cap.
Engine oil replacement and oil filter element
cleaning
1. Place the ATV on a level surface.
2. Warm up the engine for several minutes and
stop it.
3. Place a container under the engine to collect
the used oil.
4. Remove the engine oil filler cap, and then re-
move the drain bolt to drain the oil.CAUTION:_ When removing the drain bolt, the compres-
sion spring, oil strainer and O-ring will fall out.
Take care not to lose these parts. _
U5NF62.book Page 17 Wednesday, May 8, 2002 1:40 PM

8-45

Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor brake performance.


Be careful that water does not enter the brake
fluid reservoir when refilling. Water will signifi-
cantly lower the boiling point of the fluid and
may result in vapor lock.


Brake fluid may deteriorate painted surfaces or
plastic parts. Always clean up spilled fluid im-
mediately.


Have a Yamaha dealer check the cause if the
brake fluid level goes down.
U5NF62.book Page 45 Wednesday, May 8, 2002 1:40 PM

10-1
EBU00428
SPECIFICATIONS
MODEL YFM350X
Dimension:
Overall length
Overall width
Overall height
Seat height
Wheel base
Ground clearance
Minimum turning radius1,840 mm
1,080 mm
1,080 mm
765 mm
1,200 mm
125 mm
3,500 mm
Basic weight:
With oil and full fuel tank 191 kg
Engine:
Type
Cylinder arrangement
Displacement
Bore
× Stroke
Compression ratio
Starting system
Lubrication systemAir-cooled, 4-stroke, SOHC
Forward inclined single cylinder
348 cm
3
83.0
× 64.5 mm
9.2 : 1
Electric starter
Wet sump
U5NF62.book Page 1 Wednesday, May 8, 2002 1:40 PM

10-2
10
Engine oil:
Type
Recommended engine oil classification: API Service SE, SF, SG type or higherMODEL YFM350X
-20˚-10˚0˚
10˚20˚30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
CAUTION:
In order to prevent clutch slippage (since the en-
gine 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.
U5NF62.book Page 2 Wednesday, May 8, 2002 1:40 PM

10-3
Quantity:
Periodic oil change (engine oil)
Periodic oil change
(engine oil with oil filter replacement)
Total amount2.4 L
2.5 L
3.2 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
1.9 L
Carburetor:
Type/manufacturer BTM36SH / 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
40/13 (3.076)
Constant mesh, 6-speed forward, 1-speed reverse
Left foot operation MODEL YFM350X
U5NF62.book Page 3 Wednesday, May 8, 2002 1:40 PM

10-5
Shock absorber:
Front
RearCoil spring / oil damper
Coil spring / gas-oil damper
Wheel travel:
Front
Rear200 mm
200 mm
Electrical:
Ignition system
Generator system
Battery type/voltage, capacityD.C. C.D.I.
A.C. magneto
GM12CZ-4A-2/12V, 12Ah
Headlight type: Krypton bulb
Bulb voltage, wattage
× quantity:
Headlight
Tail/brake light
Indicator light:
Neutral
Reverse12V, 30W/30W
× 2
12V, 5W/21W
× 1
12V, 3.4W
× 1
12V, 3.4W
× 1
Fuse: 15AMODEL YFM350X
U5NF62.book Page 5 Wednesday, May 8, 2002 1:40 PM