2011 YAMAHA TZR50 coolant

Engine overheatingEWA10400
●Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
●After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the his-
sing sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
TIP
If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended
coolant 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.
WARNING
PERIODIC MAINTENANCE AND ADJUSTMENT
6-38
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Dimensions:Overall length:
2202 mm (86.7 in)
Overall width:
689 mm (27.1 in)
Overall height:
1175 mm (46.3 in)
Seat height:
820 mm (32.3 in)
Wheelbase:
1341 mm (52.8 in)
Ground clearance:
151 mm (5.94 in)
Minimum turning radius:
2900 mm (114.2 in)
Weight:With oil and fuel:
124.0 kg (273 lb)
Engine:Engine type:
Liquid cooled 2-stroke
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
49.7 cm
3
Bore x stroke:
40.3 x 39.0 mm (1.59 x 1.54 in)
Compression ratio:
11.50 :1
Starting system:
Electric starter
Lubrication system:
Separate lubrication (Yamaha autolube)Type:
YAMALUBE 2 or 2-stroke engine oil
(JASO FC grade) or (ISO EG-C or EG-D
grade)
Quantity:
1.40 L (1.48 US qt, 1.23 Imp.qt)
Transmission oil:Oil change quantity:
0.75 L (0.79 US qt, 0.66 Imp.qt)
Type:
SAE 10W-30 type SE motor oil
Cooling system:Coolant reservoir capacity (up to the maxi-
mum level mark):
0.29 L (0.31 US qt, 0.26 Imp.qt)
Radiator capacity (including all routes):
0.70 L (0.74 US qt, 0.62 Imp.qt)
Air filter:Air filter element:
Wet element
Fuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
13.8 L (3.65 US gal, 3.04 Imp.gal)
Fuel reserve amount:
2.2 L (0.58 US gal, 0.48 Imp.gal)
Carburetor:Manufacturer:
DELL’ORTO
Type x quantity:
PHBN 16 x 1
Spark plug (s):Manufacturer/model:
NGK / BR9 ES
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Clutch:Clutch type:
Wet, multiple-disc
Transmission:Primary reduction system:
Helical gear
Primary reduction ratio:
71/20 (3.55)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
60/11 (5.45)
Transmission type:
Constant mesh 6-speed
Operation:
Left foot operation
Gear ratio:1st:
36/12 (3.00)
2nd:
33/16 (2.062)
3rd:
29/19 (1.526)
4th:
27/22 (1.227)
5th:
25/24 (1.041)
6th:
24/25 (0.960)
SPECIFICATIONS
8-1
8
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Rear turn signal light:
12 V, 10.0 W x 2
License plate light:
12 V, 5.0 W x 1
Meter lighting:
12 V, 1.2 W x 2
Neutral indicator light:
LED
Oil level warning light:
LED
Turn signal indicator light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
Fuse:Main fuse:
10.0 A
SPECIFICATIONS
8-3
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AAir filter element .......................................6-15
Anti-theft device housing .........................3-12
Autolube pump, adjusting........................6-27
BBattery......................................................6-30
Brake and clutch levers, checking and
lubricating ..............................................6-27
Brake and shift pedals, checking and
lubricating ..............................................6-27
Brake fluid level, checking .......................6-22
Brake fluid, changing ...............................6-23
Brake lever .................................................3-6
Brake pedal ................................................3-6
Brake pedal free play, adjusting ..............6-20
CCables, checking and lubricating ............6-26
Carburetor, adjusting ...............................6-16
Care............................................................7-1
Catalytic converter .....................................3-9
Clutch lever ................................................3-5
Clutch lever free play, adjusting...............6-19
Coolant.....................................................6-13
Coolant temperature warning light ............3-3
Cowlings and panels, removing and
installing ...................................................6-8
DDimmer switch ...........................................3-4
Drive chain slack ......................................6-24
Drive chain, cleaning and lubricating.......6-25
EEngine break-in ..........................................5-3
Engine idling speed .................................6-16
Engine oil ...................................................3-9Engine stop switch ....................................3-5
Engine trouble warning light ......................3-3
Engine, starting a warm .............................5-2
FFront and rear brake pads, checking ......6-21
Front brake lever free play, checking.......6-20
Front fork, checking .................................6-28
Fuel ............................................................3-7
Fuel cock..................................................3-10
Fuel consumption, tips for reducing ..........5-3
Fuel tank breather/overflow hose ..............3-8
Fuel tank cap .............................................3-6
Fuse, replacing.........................................6-31
HHandlebar switches ...................................3-4
Headlight bulb, replacing .........................6-32
Horn switch ................................................3-4
IIdentification numbers ...............................9-1
Ignition circuit cut-off system ..................3-13
Indicator and warning lights ......................3-2
KKey identification number ..........................9-1
LLicense plate light bulb, replacing ...........6-35
MMain switch/steering lock ..........................3-1
Maintenance and lubrication, periodic ......6-4
Maintenance, emission control system .....6-3
Matte color, caution ...................................7-1
Model label ................................................9-2
NNeutral indicator light.................................3-2
OOil level warning light .................................3-2
PParking .......................................................5-4
Part locations .............................................2-1
Pass switch ................................................3-4
Pre-operation check list .............................4-2
RRear brake light switch, adjusting ...........6-21
Rear view mirrors .....................................3-12
SSafety information ......................................1-1
Seat ..........................................................3-11
Shift pedal ..................................................3-5
Shift pedal position, adjusting .................6-21
Shifting .......................................................5-2
Sidestand .................................................3-13
Sidestand, checking and lubricating .......6-28
Spark plug, checking ...............................6-10
Specifications.............................................8-1
Speedometer unit ......................................3-3
Start switch ................................................3-5
Starter (choke) lever .................................3-11
Starting a cold engine ................................5-1
Steering, checking ...................................6-29
Storage.......................................................7-3
TTachometer ................................................3-4
Tail/brake light bulb, replacing .................6-33
Throttle cable free play, adjusting ............6-17
Throttle grip and cable, checking and
lubricating ..............................................6-26
Tires .........................................................6-17
Tool kit ........................................................6-1
INDEX
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