check engine YAMAHA YBR125 2007 User Guide

CAUTION :
Front fork inspectionSecurely support the Motorcycle
so there is no danger of it falling
over.
1. Visual check
Check for scratches or damage
on the inner tube and traces of oil
leakage from the front fork.2. Operation check
Place the Motorcycle on a level
place.
a. Hold the Motorcycle in an
upright position and apply the
front brake.
b. Push down hard on the
handlebars several times and
check if the fork rebounds
smoothly.
If any damage or unsmooth
movement is found with the front
fork, consult a YAMAHA dealer.
Steering inspectionPeriodically inspect the condition of
the steering. Worn out or loose
steering bearings may be danger-
ous. Place a stand under the engine
to raise the front wheel off the
ground. Hold the lower end of the
front forks and try to move them
forward and backward. If any free
play can be felt, ask a YAMAHA
dealer to inspect and adjust the
steering. Inspection is easier if the
front wheel is removed.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-23
WARNING

Ask YAMAHA dealer to inspect.compression check. Engine doesn't start, go to
Dry with
Black SootWet No compression.
There is compression
electrode. plug and check Remove spark Use kick starter.
Wipe clean with dry cloth
and correct spark plugGo to Ignition check. Enough fuel
No fuelGO TO compression check
in the fuel tank Check if there is fuel
Supply fuel.
Open the throttle half-way
and start the engine.
or replace spark plug.
WARNING
Never Check the fuel system while smoking or in the vicinity of an open flame.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-33Ask YAMAHA
dealer to inspect.
Troubleshooting chart - For Starting
1. Fuel
2. Compression
3. Ignition
If Engine does not start
Contact YAMAHA dealer.

10-1
1. Check for any missing item(s), scratches in painted/plated part(s), saddle or other external
visual damages and take corrective action.
Check each of the following items individually and mention the corrective action (as per the
recommended specifications) in the boxes provided.2. Check for missing part(s), if any.A. FRAME
a. Brakes
Front : Free Play at Lever End (10 ~ 15 mm)
Rear :Free Play at Rear Brake (20 ~ 30 mm)
b. Clutch :Free Play at Lever End (10 ~ 15 mm)c. Throttle :Free Play at Throttle Grip (3 ~7 mm)d. Steering :Check for Free Movemente. Suspension
Front Fork : Check for any sticky movement
Rear Shock Abs : For Free Stroking & Setting on both
(To be filled in by the Dealer on receipt of the Motorcycle from YMIS)
Odo-Meter
ReadingDate of
Inspection
Frame
No.Engine
No.Date of
SaleFound OK
Set RightReplaced
Cleaned
Lubricated
RCL
S
PRE-DELIVERY INSPECTION REPORT
No.
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PRE-DELIVERY INSPECTION REPORT
f. Wheels
Tyre :Tyre pressure Solo Double
(PSI)
Front 25 25
Rear 33 36
R i m : Runout - Radial - 1.5 mm (Max)
- Lateral - 1.5 mm (Max)
Spokes : No loosenes
g. Locks Operation : • Ignition
• Steering• Fuel Tank Cap• Side Cover (L.H.)
h. FastenersSpecified Torque
(Ft-Lb)
1. Front Wheel Axle Nuts 25-40
2. Front Fork (Crown Handle & Inner Tube)13-202. Front Fork under Bracket Stem Nut18-223. Handle Bar Mounting Bolts 13-204. Rear Shock Absorber Mounting Bolts22-355. Rear Swing Arm Pivot Shaft Nut32-526. Rear Wheel Axle/Sprocket. Shaft Nuts60-70
B. ENGINE
a. Engine Oil : • Oil Level (For checking - Refer Pg. 6-9)
• Check for any Leakages
10-2
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b. Spark Plug :Recommended No. P-RA7HC(Champion)
Gap 0.8 ±0.1 mm
c. Valve Clearance :(Cold condition)
(If required) Inlet0.08 ~ 0.12 mm
Exhaust0.10 ~ 0.14 mm
(After matching of the mark on sprocket cam chain with mark on Cylinder
Head Casting and ensuring the Piston at TDC of compression stroke.)
d. Kick Operation: For free Movement
e. Carburetor : • Idle RPM
In warmed up condition
(1300~1500 RPM)
• Check for Overflow
f. Drive Chain : • Alignment
• Slackness(20 ~ 30 mm)
g. FastenersSpecified Torque
(Ft-Lb)
1. Cylinder Head Bolts14-17
2. Engine Mounting
a) Engine Mounting Front and Stay Front25-29
b) Stay Engine Front and Frame25-29c) Engine Mounting Rear and Frame25-29d) Engine Mounting Upper &
Stay Engine Upper25-29e) Stay Engine Upper and Frame25-29f) Engine Mounting Front Lower and Frame25-29
3. Front and Rear Silencer Mounting Nut9-124. Crown Handle Centre Bolt8-14
PRE-DELIVERY INSPECTION REPORT
10-3
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15. Location of Storage and Tool Kit compartments and their use.
16. Procedure of opening and closing of L. H. Side Panel.
17. Battery Maintenance : Checking of electrolyte level (To add only distilled water if required &
to maintain its Specified Level)
18. Correct Drive Chain Slackness (20 ~30 mm).
19. Correct type of Spark Plug and Spark Plug gap.
20. Engine Oil (in Gear Box), level checking and explaining the importance of replacing the Engine
Oil after every 2000 KMS Always use YAMALUBE 4T OIL SG Grade.
21. TFF oil to be replaced after every 10000 Kms.
22. Running- In Period/ Preventive Maintenance Schedule Instructions
23. Information of emission and safety norms (AIS + CATCON).
24. Importance and schedule of Free Services
25. Warranty Terms and Conditions.
INSTALLATION
IMPORTANT CAUTION
10-6
EXPLAINED BYSIGNATURE: _____________ NAME:
CUSTOMER’S SIGN
MAIN SELLING DLR’S STAMP, SIGNATURE
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1. DO’S ()

1Always use genuine ‘spare parts’ purchased from YAMAHA Authorised Dealers.

2Always use only genuine oils
• 4T - 20W/40 SG grade - YAMALUBE 4T

3 Always keep your engine well turned. Save environment and also improve Fuel Efficiency

4 • ALWAYS GET YOUR MOTORCYCLE REPAIRED AND MAINTAINED ONLY AT YAMAHA AUTHORISED
DEALER.
• YAMAHA serves you through a wide network of Authorised Dealers.

5.Check the Following at every scheduled service:-
a) Spark Plug : Check/Reset Gap/Replace as per the recommendations
in this Owner’s Manual (page no 6-7)
b) Carburetor :Cleaning/Adjustment Every 4500 kmsc) Air Filter : Clean every 2000 kms as per the environment conditions.
d) Piston/Rings/Cylinder : Check / Clean / Replace if necessary
e) Exhaust System : Check / Replace if necessary
f) Valve Timing : Check / Adjust every 4500 kms
g) Compression pressure :Check / Diagnose.
6 Always drive with Starter Lever in OFF position.
7 Use Starter Lever for minimum possible period (1 to 2 minutes) only to start and warm up Engine
(may be required only in winter)
DO’S AND DON’TS FOR THE MOTORCYCLE
2
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3. LIST OF COMPONENTS IMPACTING “EMISSION” 2. PROCEDURE FOR MEASUREMENT OF “CO” EMISSION LEVEL
2.1IMPORTANT : “CO” Measurement Equipment must be duty calibrated.
2.2 Check for “NO LEAKAGE” from Exhaust System.
2.3 Starter Lever should be in OFF position.
2.4 All Electricals should be in OFF position.
2.5 Set the Idle speed of the Engine in warmed up condition of Motorcycle as specified.
2.6 Insert the Sampling probe of the Exhaust Gas Analyser inside the Exhaust Muffler of the
Motorcycle.
2.7 • If the reading is within specified limits then it is acceptable.
• If the reading exceeds the norm of 3.5% (by volume) have it adjusted by YMI Authorised
Dealer.‘CO’ EMISSION LEVEL MEASUREMENT
4
MODELIDLE R.P.M.
1300 - 1500 RPM
LIBERO
a. Air Filter
b. Carburetor
c . Cylinder
d. Piston Ring & Piston
e. Cylinder Headf. Rocker Arm
g. Valves
h. Cam Shaft
i. Valve Seals
j. Timing Chaink. Air Intake System
l. Ignition Coil, CDI, Magneto
m. Spark Plug
n. Exhaust System
- AIS, - CAT CON
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