maintenance YAMAHA T135 2006 Service Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
6-36
6
EAU37620
Troubleshooting charts Starting problems or poor engine performance
WARNING
EWA10840
Keep away open flames and do not smoke while checking or working on the fuel system.
Check the fuel level in
the fuel tank.1. Fuel
There is
enough fuel.
There is
no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the
electric starter or the
kickstarter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wet
Dry
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.
The engine does not start. Have a
Yamaha dealer check the vehicle.The engine does not start.
Check the battery.Open the throttle halfway and
operate the electric starter.
Operate the
electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the electrolyte and battery
lead connections, and charge the
battery if necessary.
U5YPE0E0.book Page 36 Wednesday, February 23, 2005 4:22 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-37
6Engine overheating
WARNING
EWA10400


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 hissingsound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
NOTE:If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolantas 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 NOTE.)
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.
U5YPE0E0.book Page 37 Wednesday, February 23, 2005 4:22 PM

INDEXAAir filter element, cleaning..................... 6-13BBattery................................................... 6-28
Brake fluid, changing ............................ 6-22
Brake fluid level, checking .................... 6-21
Brake lever .............................................. 3-4
Brake lever free play, checking ............. 6-19
Brake lever, lubricating ......................... 6-25
Brake pads and shoes, checking .......... 6-20
Brake pedal ............................................. 3-5
Brake pedal free play, adjusting............ 6-19
Brake pedal, lubricating ........................ 6-25CCables, checking and lubricating .......... 6-24
Carburetor, adjusting ............................ 6-14
Care ........................................................ 7-1
Catalytic converter .................................. 3-6
Centerstand and sidestand,
checking and lubricating ..................... 6-25
Coolant.................................................. 6-11
Coolant temperature warning light .......... 3-2
Cowlings and panel, removing and
installing................................................ 6-5DDimmer switch ........................................ 3-4
Drive chain, cleaning and lubricating .... 6-23
Drive chain slack ................................... 6-22EEngine break-in ....................................... 5-3
Engine idling speed............................... 6-15
Engine oil and oil filter element ............... 6-9
Engine serial number .............................. 9-2
Engine, starting a warm .......................... 5-2
FFront fork, checking .............................. 6-26
Fuel......................................................... 3-6
Fuel consumption, tips for reducing........ 5-3
Fuel gauge.............................................. 3-3
Fuel tank cap .......................................... 3-5
Fuse, replacing ..................................... 6-29GGear position indicator lights .................. 3-2
General note ........................................... 5-6HHandlebar switches ................................ 3-3
Headlight bulb, replacing ...................... 6-30
Helmet holders ....................................... 3-8
High beam indicator light ........................ 3-2
Horn switch ............................................. 3-4IIdentification numbers ............................ 9-1
Indicator and warning lights .................... 3-2KKey identification number ....................... 9-1
Kickstarter............................................... 3-7MMain switch/steering lock........................ 3-1NNeutral indicator light .............................. 3-2PParking ................................................... 5-5
Part locations .......................................... 2-1
Periodic maintenance and
lubrication chart .................................... 6-2
Pre-operation check list .......................... 4-2RRear brake light switch, adjusting ......... 6-20Rear turn signal light and
tail/brake light...................................... 6-31
SSafety information ................................... 1-1
Seat ......................................................... 3-7
Shifting .................................................... 5-2
Shift pedal ............................................... 3-4
Sidestand ................................................ 3-9
Spark plug, checking ............................... 6-7
Specifications .......................................... 8-1
Speedometer unit .................................... 3-3
Starter (choke) lever................................ 3-7
Starting and warming up a
cold engine ........................................... 5-1
Start switch.............................................. 3-4
Steering, checking................................. 6-27
Storage.................................................... 7-3
Storage compartment.............................. 3-8
Swingarm pivots, lubricating ................. 6-26TThrottle cable free play, adjusting ......... 6-15
Throttle grip and cable, checking and
lubricating ........................................... 6-24
Tires ...................................................... 6-16
Tool kit..................................................... 6-1
Troubleshooting .................................... 6-35
Troubleshooting charts.......................... 6-36
Turn signal indicator light ........................ 3-2
Turn signal light bulb (front) or
auxiliary light bulb, replacing............... 6-31
Turn signal switch ................................... 3-4VValve clearance..................................... 6-16
Vehicle identification number .................. 9-1
U5YPE0E0.book Page 1 Wednesday, February 23, 2005 4:22 PM