2007 YAMAHA TTR50 air condition

PRE-OPERATION CHECKS
4-1
4
EAU15591
The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpectedly,
even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leakage or loss
of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thorough visual inspec-
tion, to check the following points before each ride.NOTE:Pre-operation checks should be made each time the vehicle is used. Such an inspection can be accomplished in a very shorttime; and the added safety it assures is more than worth the time involved.
WARNING
EWA11150
If any item in the Pre-operation check list is not working properly, have it inspected and repaired before operatingthe vehicle.
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PRE-OPERATION CHECKS
4-2
4
EAU15605
Pre-operation check list
ITEM CHECKS PAGE
FuelCheck fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.3-4
Engine oilCheck oil level in engine.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage.6-6
Front brakeCheck operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary.6-14, 6-16
Rear brakeCheck operation.
Check pedal free play.
Adjust if necessary.6-15, 6-16
Throttle gripMake sure that operation is smooth.
Check cable free play.
If necessary, have Yamaha dealer adjust cable free play and lubricate cable and
grip housing.6-11, 6-19
Control cablesMake sure that operation is smooth.
Lubricate if necessary.6-19
Drive chainCheck chain slack.
Adjust if necessary.
Check chain condition.
Lubricate if necessary.6-16, 6-18
Wheels and tiresCheck for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary.6-12, 6-14
Shift pedalMake sure that operation is smooth.
Correct if necessary.6-19
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-1
6
EAU17231
Safety is an obligation of the owner. Pe-
riodic inspection, adjustment and lubri-
cation will keep your vehicle in the
safest and most efficient condition pos-
sible. The most important points of
motorcycle inspection, adjustment, and
lubrication are explained on the follow-
ing pages.
Maintenance, replacement, or repair
of the emission control devices and
systems may be performed by any
repair establishment or individual
that is certified (if applicable).
WARNING
EWA10320
If you are not familiar with mainte-
nance work, have a Yamaha dealerdo it for you.
EAU40350
PERIODIC MAINTENANCE PROPER PERIODIC MAINTENANCE
OF YOUR VEHICLE IS IMPORTANT
IN ORDER TO ENJOY LONG, PLEA-
SURABLE SERVICE. ESPECIALLY
IMPORTANT ARE THE MAINTE-
NANCE SERVICES RELATED TO
EMISSIONS CONTROL. THESE
CONTROLS NOT ONLY FUNCTION
TO ENSURE CLEANER AIR, BUT
ARE ALSO VITAL TO PROPER EN-
GINE OPERATION AND MAXIMUM
PERFORMANCE. IN THE FOLLOW-
ING PERIODIC MAINTENANCE
CHARTS, THE SERVICES RELATED
TO EMISSIONS CONTROL ARE
GROUPED SEPARATELY. THESE
SERVICES REQUIRE SPECIALIZED
DATA, KNOWLEDGE, AND EQUIP-
MENT. YAMAHA DEALERS ARE
TRAINED AND EQUIPPED TO PER-
FORM THESE PARTICULAR SER-
VICES.
WARNING
EWA10340
Modifications not approved by
Yamaha may cause loss of perfor-
mance, excessive emissions, andrender the vehicle unsafe for use.
Consult a Yamaha dealer before at-
tempting any changes.
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
EAU39943
Periodic maintenance chart for the emission control system NOTE:

From 7000 km (4200 mi) or 18 months, repeat the maintenance intervals starting from 3000 km (1800 mi) or 6 months.


Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technicalskills.
No. ITEM CHECKS AND MAINTENANCE JOBSINITIAL ODOMETER READINGS
1000 km
(600 mi) or
1 month or
30 hours3000 km
(1800 mi) or
6 months or
90 hours5000 km
(3000 mi) or
12 months or
150 hours
1*Fuel lineCheck fuel hoses for cracks or damage.
Replace if necessary.√√
2 Spark plugCheck condition.
Adjust gap and clean.√√
3*Valve clearanceCheck and adjust valve clearance when engine is cold.√
4*Air filter elementClean with solvent.
Replace if necessary.√√
5*Crankcase breather sys-
temCheck ventilation hose for cracks or damage and drain
any deposits.
Replace if necessary.√√√
6*CarburetorCheck engine idling speed and starter operation.
Adjust if necessary.√√√
7 Exhaust systemCheck for leakage.
Tighten if necessary.
Replace gasket(s) if necessary.√√
8 Engine oilChange (warm engine before draining).√√√
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
EAU35346
General maintenance and lubrication chart No. ITEM CHECKS AND MAINTENANCE JOBSINITIAL ODOMETER READINGS
1000 km
(600 mi) or
1 month or
30 hours3000 km
(1800 mi) or
6 months or
90 hours5000 km
(3000 mi) or
12 months or
150 hours
1*ClutchCheck operation.
Adjust if necessary.√√√
2*Front brakeCheck operation.
Adjust brake lever free play and replace brake shoes if
necessary.√√√
3*Rear brakeCheck operation.
Adjust brake pedal free play and replace brake shoes if
necessary.√√√
4*WheelsCheck runout, spoke tightness and for damage.
Tighten spokes if necessary.√√√
5*TiresCheck tread depth and for damage.
Replace if necessary.
Check air pressure.
Correct if necessary.√√
6*Wheel bearingsCheck bearings for smooth operation.
Replace if necessary.√√
7*Swingarm pivot bearingsCheck bearing assemblies for looseness.
Moderately repack with lithium-soap-based grease.√√
8 Drive chainCheck chain slack/alignment and condition.
Adjust and lubricate chain with Yamaha chain and cable
lube thoroughly.Every ride
9*Steering bearingsCheck bearing assemblies for looseness.
Moderately repack with lithium-soap-based grease.√√
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-5
6
EAU19612
Checking the spark plug The spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug
1. Remove the spark plug cap.
2. Remove the spark plug as shown,
with a spark plug wrench available
at a Yamaha dealer.To check the spark plug
1. Check that the porcelain insulator
around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when the vehicle is
ridden normally).
NOTE:
If the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer checkthe vehicle.2. Check the spark plug for electrode
erosion and excessive carbon or
other deposits, and replace it if
necessary.
To install the spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
1. Spark plug cap
1. Spark plug wrench
Specified spark plug:
NGK/CR7HSA1. Spark plug gapSpark plug gap:
0.6–0.7 mm (0.024–0.028 in)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6
EAU23090
Checking and lubricating the
cables The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING
EWA10710
Damage to the outer housing of ca-
bles may result in internal rusting
and cause interference with cable
movement. Replace damaged ca-
bles as soon as possible to preventunsafe conditions.
EAU23111
Checking and lubricating the
throttle grip and cable The operation of the throttle grip should
be checked before each ride. In addi-
tion, the cable should be lubricated at
the intervals specified in the periodic
maintenance chart.
EAU23131
Checking and lubricating the
brake and shift pedals The operation of the brake and shift
pedals should be checked before each
ride, and the pedal pivots should be lu-
bricated if necessary.
Recommended lubricant:
Yamaha Chain and Cable Lube or
engine oil SAE 10W-30 (API SE)
Recommended lubricant:
Lithium-soap-based grease (all-pur-
pose grease)
U1P681E0.book Page 19 Tuesday, April 18, 2006 2:38 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-21
6
EAU42080
Checking the front fork The condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
WARNING
EWA10750
Securely support the vehicle so thatthere is no danger of it falling over.
Check the inner tubes for scratches
and damage.
To check the operation
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
2. While applying the front brake,
push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
CAUTION:
ECA10590
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-pair it.
EAU23280
Checking the steering Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.
1. Place a stand under the engine to
raise the front wheel off the
ground.
WARNING
EWA10750
Securely support the vehicle so thatthere is no danger of it falling over.
2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.
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