Detailed instructions for use are in the User's Guide.
[. . . ] OWNER'S MANUAL
TW125
5EK-28199-E1
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INTRODUCTION
Welcome to the Yamaha world of motorcycling!As the owner of a TW125, you are benefiting from Yamaha's vast experience in and newest technology for the design and the manufacture of high-quality products, which have earned Yamaha a reputation for dependability. Please take the time to read this manual thoroughly, so as to enjoy all your TW125's advantages. The owner's manual does not only instruct you in how to operate, inspect and maintain your motorcycle, but also in how to safeguard yourself and others from trouble and injury. [. . . ] If the settings are changed, poor engine performance and damage may result.
2. Set the idle to the specified engine speed by adjusting the throttle stop screw. Turn the screw in direction a to increase engine speed and in direction b to decrease engine speed. Standard idle speed: 1, 300 ~ 1, 500 r/min NOTE: If the specified idle speed cannot be obtained by performing the above adjustment, consult a Yamaha dealer.
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Free play: 3 ~ 5 mm
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Valve clearance adjustment
The correct valve clearance changes with use, resulting in improper fuel/air supply or engine noise. To prevent this, the valve clearance must be adjusted regularly. This adjustment however, should be left to a professional Yamaha service technician. Turn the adjusting nut in direction a to increase free play and in direction b to decrease free play. Tighten the locknut.
Throttle cable free play adjustment
NOTE: Before checking the throttle cable free play, the engine idling speed should be adjusted. Adjust the throttle cable by turning the adjusting nut so that specified free play at the throttle grip is obtained.
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Tires
1 2 3 4 5 6 7 8 9 To ensure maximum performance, long service and safe operation, note the following: Tire air pressure Always check and adjust the tire pressure before operating the motorcycle.
Maximum load* Cold tire pressure Up to 80 kg Front
180 kg Rear 150 kPa 150 kPa (1. 50 kg/cm2, (1. 50 kg/cm2, 1. 50 bar) 1. 50 bar) 150 kPa 175 kPa (1. 50 kg/cm2, (1. 75 kg/cm2, 1. 50 bar) 1. 75 bar) 125 kPa 125 kPa (1. 25 kg/cm2, (1. 25 kg/cm2, 1. 25 bar) 1. 25 bar)
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80 kg load Maximum load*
Off-road riding
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* Load is the total weight of cargo, rider, passenger and accessories.
Tire inflation pressure should be checked and adjusted when the temperature of the tire equals the ambient air temperature. Tire inflation pressure must be adjusted according to total weight of cargo, rider, passenger, and accessories (fairing, saddlebags, etc. if approved for this model), and vehicle speed.
Proper loading of your motorcycle is important for several characteristics of your motorcycle, such as handling, braking, performance and safety. Do not carry loosely packed items that can shift. Securely pack your heaviest items close to the center of the motorcycle, and distribute the weight evenly from side to side. Properly adjust the suspension for your load, and check the condition and pressure of your tires. Make sure the total weight of the cargo, rider, passenger, and accessories (fairing, saddlebags, etc. if approved for this model) does not exceed the maximum load of the motorcycle. Operation of an overloaded motorcycle could cause tire damage, an accident, or even injury.
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FRONT Manufacture BRIDGESTONE REAR Manufacture Size Type TW34 Size 130/80-18 66P Type TW31
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1. Side wall
Tire inspection Always check the tires before operating the motorcycle. If center tread depth reaches the limit as shown, if the tire has a nail or glass fragments in it, or if the side wall is cracked, contact a Yamaha dealer immediately and have the tire replaced.
After extensive tests, the tires mentioned below have been approved by Yamaha Motor Co. , Ltd. No guarantee for handling characteristics can be given if tire combinations other than what is approved are used on this motorcycle. The front and rear tires should be of the same manufacture and design.
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BRIDGESTONE 180/80-14M/C 78P Minimum tire tread depth (front and rear)
1. 6 mm
NOTE: These limits may be different by regulation from country to country. If so, conform to the limits specified by the regulations of your own country.
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Wheels
To ensure maximum performance, long service, and safe operation, note the following: 8 Always inspect the wheels before a ride. [. . . ] (This will coat the cylinder wall with oil. ) e. Remove the spark plug cap from the spark plug, install the spark plug and then the spark plug cap.
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When turning the engine over, be sure to ground the spark plug electrodes to prevent damage or injury from sparking. Lubricate all control cables and the pivoting points of all levers and pedals as well as of the sidestand/centerstand.
MOTORCYCLE CARE AND STORAGE
7. Check and, if necessary, correct the tire air pressure, then raise the motorcycle so that both of its wheels are off the ground. [. . . ]