2004 YAMAHA YFM350R oil type

5-13
EBU10842
Engine oil
Make sure the engine oil is at the specified level.
Add oil as necessary. (See pages 8-15–8-25.)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.
_
EBU00498
Chain
Check the general condition of the chain and
check the chain slack before every ride. Lubricate
and adjust the chain as necessary. (See pages
8-67–8-71 for details.) Recommended engine oil type and quantity:
See page 10-2.
U5YT60.book Page 13 Friday, December 12, 2003 1:55 PM

8-17 1. Engine oil drain bolt 2. O-ring
3. Compression spring 4. Engine oil strainer
1. Boulon de vidange de l’huile moteur
2. Joint torique
3. Ressort de compression
4. Crépine à huile de moteur
1. Perno de drenaje del aceite de motor
2. Junta tórica
3. Muelle de compresión
4. Tamiz de aceite de motor
5. If the engine oil is at or below the minimum
level mark, add sufficient oil of the recom-
mended 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.
To change the engine oil (with or without oil fil-
ter element cleaning)
1. Place the ATV on a level surface.
2. Warm up the engine for several minutes, and
then turn it off.
3. Place a container under the engine to collect
the used oil.
4. Remove the engine oil filler cap, and then re-
move the engine oil drain bolt to drain the oil
from the crankcase.CAUTION:_ When removing the engine oil drain bolt, the
compression spring, oil strainer and O-ring
will fall out. Take care not to lose these parts. _
U5YT60.book Page 17 Friday, December 12, 2003 1:55 PM

8-49

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.
U5YT60.book Page 49 Friday, December 12, 2003 1:55 PM

10-1
EBU00428
SPECIFICATIONS
MODEL YFM350
Dimension:
Overall length
Overall width
Overall height
Seat height
Wheel base
Ground clearance
Minimum turning radius1,770 mm
1,095 mm
1,080 mm
820 mm
1,210 mm
115 mm
3,100 mm
Basic weight:
With oil and full fuel tank 180 kg
Engine:
Type
Cylinder arrangement
Displacement
Bore
× Stroke
Compression ratio
Starting system
Lubrication systemAir-cooled, 4-stroke, SOHC
Forward inclined single cylinder
349 cm
3
83.0
× 64.5 mm
9.2 : 1
Electric starter
Wet sump
U5YT60.book Page 1 Friday, December 12, 2003 1:55 PM

10-2
10
Engine oil:
Type
Recommended engine oil classification: API Service SE, SF, SG type or higherMODEL YFM350
-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.
U5YT60.book Page 2 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

10-5
Shock absorber:
Front
RearCoil spring / oil damper
Coil spring / gas-oil damper
Wheel travel:
Front
Rear200 mm
210 mm
Electrical:
Ignition system
Generator system
Battery type/voltage, capacityD.C. C.D.I.
A.C. magneto
YTZ10S/12V, 8.6Ah
Headlight type: Krypton bulb
Bulb voltage, wattage
× quantity:
Headlight
Tail/brake light
Indicator light:
Neutral
Reverse12V, 30W/30W
× 2
12V, 5W/21W
× 1
12V, 1.7W
× 1
12V, 1.7W
× 1
Fuse: 15AMODEL YFM350
U5YT60.book Page 5 Friday, December 12, 2003 1:55 PM