radiator cap YAMAHA YZF-R3 2015 Owners Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
6-38
6
En
gine overheatin g
WARNING
EWAT1041
Do not remove the ra diator cap when the en gine an d ra diator are hot. Scal din g hot flui d an d steam may be
b lown out un der pressure, which coul d cause serious injury. Be sure to wait until the en gine has coole d.
 Place a thick ra g, like a towel, over the ra diator cap, an d then slowly rotate the cap counterclockwise to the
d etent to allow any resi dual pressure to escape. When the hissin g soun d has stoppe d, press down on the cap
while turnin g it counterclockwise, an d then remove the cap.TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended cool-
ant as soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
UB02E0E0.book Page 38 Thursday, January 15, 2015 3:39 PM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:2090 mm (82.3 in)
Overall width:
720 mm (28.3 in)
Overall height: 1135 mm (44.7 in)
Seat height: 780 mm (30.7 in)
Wheelbase:
1380 mm (54.3 in)
Ground clearance: 160 mm (6.30 in)
Minimum turning radius: 2700 mm (106.3 in)Wei ght:Curb weight:
169 kg (373 lb)Engine:Engine type:
Liquid cooled 4-stroke, DOHC
Cylinder arrangement: Inline 2-cylinder
Displacement: 321 cm3
Bore × stroke:
68.0 × 44.1 mm (2.68 × 1.74 in)
Compression ratio: 11.2 : 1
Starting system: Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 10W-40, 10W-50, 15W-40,
20W-40 or 20W-50
Recommended engine oil grade: API service SG type or higher, JASO
standard MA
Engine oil quantity:
Without oil filter cartridge replacement: 1.80 L (1.90 US qt, 1.58 Imp.qt)
With oil filter cartridge replacement:
2.10 L (2.22 US qt, 1.85 Imp.qt)Coolant quantity:Coolant reservoir (up to the maximum level
mark):0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes): 0.96 L (1.01 US qt, 0.84 Imp.qt)Air filter:Air filter element:Oil-coated paper element
Fuel:Recommended fuel:Regular unleaded gasoline (Gasohol (E10)
acceptable)
Fuel tank capacity: 14 L (3.7 US gal, 3.08 Imp.gal)
Fuel reserve amount:
3.0 L (0.79 US gal, 0.66 Imp.gal)Fuel injection:Throttle body:ID mark: 2MS2 00Spark plu g(s):Manufacturer/model:
NGK/CR8E
Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)Clutch:Clutch type:
Wet, multiple-discTransmission:Primary reduction ratio:3.043 (70/23)
Final drive:
Chain
Secondary reduction ratio: 3.071 (43/14)
Transmission type: Constant mesh 6-speed
Operation:
Left foot operation
Gear ratio: 1st:
2.500 (35/14)
–20 –10 0 1020 30 40 50 C
10 30 50 70 90 110
0 130 F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
UB02E0E0.book Page 1 Thursday, January 15, 2015 3:39 PM