2017 YAMAHA WR 250F Owners Manual

CABLE ROUTING DIAGRAM
2-44
1. Brake master cylinder
2. Brake hose holder
3. Brake hoses
A. While installing the brake hose, direct a bend in
its pipe portion as shown, and bring it into contact
with the projection on the brake caliper.
B. Pass the brake hose into the brake hose holders.
C. If the brake hose interferes with the rear shock
absorber, correct its twist.
D. While installing the brake hose, direct a bend in
its pipe portion as shown, and bring it into contact
with the projection on the brake master cylinder.

CABLE ROUTING DIAGRAM
2-45

3
PERIODIC CHECKS AND ADJUSTMENTS
PERIODIC MAINTENANCE............................................................................. 3-1
INTRODUCTION ........................................................................................ 3-1
PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL
SYSTEM .................................................................................................... 3-1
GENERAL MAINTENANCE AND LUBRICATION CHART ........................ 3-2
MAINTENANCE INTERVALS FOR COMPETITION USE ......................... 3-4
PRE-OPERATION INSPECTION AND MAINTENANCE................................. 3-9
GENERAL INSPECTION AND MAINTENANCE........................................ 3-9
ENGINE.......................................................................................................... 3-10
CHECKING THE COOLANT LEVEL ........................................................ 3-10
CHECKING THE COOLING SYSTEM ..................................................... 3-10
CHANGING THE COOLANT.................................................................... 3-10
CHECKING THE RADIATOR CAP .......................................................... 3-11
CHECKING THE RADIATOR CAP VALVE OPENING PRESSURE ....... 3-11
CHECKING THE COOLANT CIRCULATORY SYSTEM FOR LEAKS .... 3-12
ADJUSTING THE CLUTCH LEVER FREE PLAY .................................... 3-12
ADJUSTING THE THROTTLE GRIP FREE PLAY .................................. 3-13
LUBRICATING THE THROTTLE CABLE ................................................ 3-14
CLEANING THE AIR FILTER ELEMENT................................................. 3-14
CHECKING THE THROTTLE BODY JOINT ............................................ 3-15
CHECKING THE BREATHER HOSES .................................................... 3-15
CHECKING THE EXHAUST SYSTEM..................................................... 3-15
CHECKING THE FUEL LINE ................................................................... 3-16
CHECKING THE ENGINE OIL LEVEL..................................................... 3-16
CHANGING THE ENGINE OIL ................................................................ 3-17
ADJUSTING THE ENGINE IDLING SPEED ............................................ 3-18
ADJUSTING THE VALVE CLEARANCE ................................................. 3-19
CLEANING THE SPARK ARRESTER ..................................................... 3-24
CHASSIS........................................................................................................ 3-25
BLEEDING THE BRAKE SYSTEM .......................................................... 3-25
CHECKING THE BRAKE HOSE .............................................................. 3-26
ADJUSTING THE FRONT BRAKE .......................................................... 3-26
ADJUSTING THE REAR BRAKE ............................................................. 3-27
CHECKING THE FRONT BRAKE PADS ................................................. 3-27
CHECKING THE REAR BRAKE PADS ................................................... 3-29
CHECKING THE REAR BRAKE PAD INSULATOR ................................ 3-30
CHECKING THE BRAKE FLUID LEVEL.................................................. 3-30
ADJUSTING THE DRIVE CHAIN SLACK ................................................ 3-31
CHECKING THE FRONT FORK LEGS ................................................... 3-32
CHECKING THE FRONT FORK PROTECTOR GUIDE .......................... 3-32
CLEANING THE FRONT FORK OIL SEAL AND DUST SEAL ................ 3-32
AIR BLEEDING FROM FRONT FORK .................................................... 3-32
ADJUSTING THE FRONT FORK LEGS .................................................. 3-33
CHECKING THE SWINGARM OPERATION ........................................... 3-34
CHECKING THE REAR SUSPENSION ................................................... 3-34

ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY ................... 3-34
CHECKING THE TIRES ........................................................................... 3-36
CHECKING AND TIGHTENING THE SPOKES ....................................... 3-36
CHECKING THE WHEELS ...................................................................... 3-37
CHECKING THE WHEEL BEARINGS ..................................................... 3-37
CHECKING AND ADJUSTING THE STEERING HEAD .......................... 3-37
CHECKING AND LUBRICATING THE CABLES ..................................... 3-38
LUBRICATING THE LEVERS .................................................................. 3-38
LUBRICATING THE PEDAL .................................................................... 3-38
LUBRICATING THE DRIVE CHAIN ......................................................... 3-38
LUBRICATING THE SIDESTAND............................................................ 3-39
CHECKING THE CHASSIS FASTENERS ............................................... 3-39
ELECTRICAL SYSTEM.................................................................................. 3-40
CHECKING THE SPARK PLUG .............................................................. 3-40
CHECKING THE IGNITION TIMING ........................................................ 3-40
CHECKING AND CHARGING THE BATTERY ........................................ 3-41
REPLACING THE HEADLIGHT BULB..................................................... 3-41

PERIODIC MAINTENANCE
3-1
EAS2GBB074
PERIODIC MAINTENANCE
EAS2GBB075INTRODUCTION
This chapter includes all information necessary to perform recommended checks and adjustments.
If followed, these preventive maintenance procedures will ensure more reliable vehicle operation, a
longer service life and reduce the need for costly overhaul work. This information applies to vehicles
already in service as well as to new vehicles that are being prepared for sale. All service technicians
should be familiar with this entire chapter.
EAS2GBB076PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL SYSTEM
TIP
• From 4200 mi (7000 km) or 9 months, repeat the maintenance intervals starting from 1800 mi (3000
km) or 3 months.
• Items marked with an asterisk should be performed by a Yamaha dealer as they require special
tools, data and technical skills.
NO. ITEM CHECKS AND MAINTENANCE JOBSINITIALODOMETER READ-
INGS
600 mi
(1000
km) or 1
month1800 mi
(3000
km) or 3
months3000 mi
(5000
km) or 6
months
1*Fuel line• Check fuel hoses for cracks or dam-
age.
• Replace if necessary.
2Spark plug• Check condition.
• Adjust gap and clean.
3*Valve clear-
ance• Check and adjust valve clearance
when engine is cold.
4*Air filter ele-
ment• Clean with solvent and apply Yamaha
foam air filter oil or other quality foam
air filter oil.
• Replace if necessary.
5*Breather
system• Check ventilation hose for cracks or
damage and drain any deposits.
• Replace. Every 2 years
6*Fuel injec-
tion• Adjust engine idling speed.
7Exhaust sys-
tem• Check for leakage.
• Tighten if necessary.
• Replace gasket(s) if necessary.
8Engine oil• Change (warm engine before drain-
ing).
9Engine oil fil-
ter element•Replace.
10Engine oil
strainer• Clean.

PERIODIC MAINTENANCE
3-2
EAS2GBB077GENERAL MAINTENANCE AND LUBRICATION CHART
NO. ITEM CHECKS AND MAINTENANCE JOBSINITIALODOMETER READ-
INGS
600 mi
(1000
km) or 1
month1800 mi
(3000
km) or 3
months3000 mi
(5000
km) or 6
months
1Clutch• Check operation.
• Adjust or replace cable.
2*Cooling sys-
tem• Check hoses for cracks of damage.
• Replace if necessary.
• Replace with ethylene glycol anti-
freeze coolant every 1 year.Every 1 year
3*Spark arrest-
er• Clean.
4*Front brake• Check operation, fluid level, and for flu-
id leakage.
• Replace brake pads if necessary.
• Replace brake fluid every 1 year. Every 1 year
5*Rear brake• Check operation, fluid level, and for flu-
id leakage.
• Replace brake pads if necessary.
• Replace brake fluid every 1 year. Every 1 year
6*Brake hoses• Check for cracks or damage.
• Replace. Every 4 years
7*Wheels• Check runout, spoke tightness and for
damage.
• Tighten spokes if necessary.
8*Tires• Check tread depth and for damage.
• Replace if necessary.
• Check air pressure.
• Correct if necessary.
9*Wheel bear-
ings• Check bearings for smooth operation.
• Replace if necessary.
10*Swingarm
pivot bear-
ings• Check bearing assemblies for loose-
ness.
• Moderately repack with lithium-soap-
based grease.
11Drive chain• Check chain slack/alignment and con-
dition.
• Adjust and lubricate chain with a spe-
cial O-ring chain lubricant thoroughly.Every ride
12*Steering
bearings• Check bearing assemblies for loose-
ness.
• Moderately repack with lithium-soap-
based grease every 1200 mi (2000
km) or 12 months (whichever comes
first).

PERIODIC MAINTENANCE
3-3
TIP
• The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
• Hydraulic brake service
• After disassembling the brake master cylinders and calipers, always change the fluid. Regularly
check the brake fluid levels and fill the reservoirs as required.
• Every two years replace the internal components of the brake master cylinders and calipers, and
change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
13
Brake and
clutch lever
pivot shafts• Apply lithium-soap-based grease (all-
purpose grease) lightly.
14Brake pedal
pivot shafts• Apply lithium-soap-based grease (all-
purpose grease) lightly.
15Sidestand
pivot• Check operation.
• Apply lithium-soap-based grease (all-
purpose grease) lightly.
16*Front fork• Check operation and for oil leakage.
• Replace if necessary.
17*Shock ab-
sorber as-
sembly• Check operation and for oil leakage.
• Replace if necessary.
18*Rear sus-
pension link
pivots• Apply molybdenum disulfide grease
lightly.
19*Control ca-
bles• Apply Yamaha chain and cable lube or
engine oil 10W-30 thoroughly.
20*Throttle grip
housing and
cable• Check operation and free play.
• Adjust the throttle cable free play if
necessary.
• Lubricate the throttle grip housing and
cable.
21*Chassis fas-
teners• Check all chassis fitting and fasteners.
• Correct if necessary.
22Battery• Check terminal for looseness and cor-
rosion. NO. ITEM CHECKS AND MAINTENANCE JOBSINITIALODOMETER READ-
INGS
600 mi
(1000
km) or 1
month1800 mi
(3000
km) or 3
months3000 mi
(5000
km) or 6
months

PERIODIC MAINTENANCE
3-4
EAS2GBB078MAINTENANCE INTERVALS FOR COMPETITION USE
TIP
• The following schedule is intended as a general guide to maintenance and lubrication. Bear in mind
that such factors as weather, terrain, geographical location, and individual usage will alter the re-
quired maintenance and lubrication intervals. If you are a doubt as to what intervals to follow in
maintaining and lubricating your machine, consult your Yamaha dealer.
• Periodic inspection is essential in making full use of the machine performance. The service life of
the parts varies substantially according to the environment in which the machine runs (e.g., rain,
dirt, etc.). Therefore, earlier inspection is required by reference to the list below.
ITEMAfter
break-
inEvery
raceEvery
third
(or
500
km)Every
fifth
(or
1,000
km)As re-
quiredRemarks
ENGINE OIL
Replace
VALVES
Check the valve
clearancesThe engine must be cold.
InspectCheck the valve seats and
valve stems for wear.
Replace
VALVE SPRINGS
InspectCheck the free length and the
tilt.
Replace
VALVE LIFTERS
InspectCheck for scratches and wear.
Replace
CAMSHAFTS Inspect the camshaft surface.
InspectInspect the decompression
system.
Replace
CAMSHAFT
SPROCKETS
InspectCheck for wear on the teeth
and for damage.
Replace
PISTON Inspect crack.
InspectInspect carbon deposits and
eliminate them.
Clean
ReplaceIt is recommended that the pis-
ton pin and ring are also re-
placed at the same time.
PISTON RING
InspectCheck ring end gap.
Replace