How to fix poor idle speed on a Yamaha Motorcycle with improperly adjusted idle speed?
If your Yamaha Motorcycle is experiencing poor idle speed performance, a potential cause could be improperly adjusted idle speed (throttle stop screw). Consider checking and adjusting the idle speed.
How to troubleshoot a Yamaha DT125RE 2005 Motorcycle with a clogged pilot jet causing starting failure?
If your Yamaha Motorcycle is experiencing starting failure or hard starting, a potential cause could be a clogged pilot jet. Consider checking and cleaning the pilot jet.
How to fix a Yamaha DT125RE 2005 Motorcycle with starting failure due to deteriorated fuel?
If your Yamaha Motorcycle is experiencing starting failure or hard starting, one potential reason could be deteriorated fuel or fuel that contains water or foreign material. Make sure that you are using a good quality fuel.
What to do if my Yamaha DT125RE 2005 Motorcycle is hard to start: clogged fuel tank cap?
If your Yamaha Motorcycle is experiencing starting failure or hard starting, a potential cause could be a clogged fuel tank cap. Consider checking and cleaning it.
What to do if Yamaha Motorcycle gear shifting is faulty?
If you are experiencing faulty gear shifting with your Yamaha Motorcycle, one potential solution is to check the push lever position, as it may be improperly adjusted. Also check for seized shift fork or bent shift forks guide bar.
General| Fuel System | Carburetor |
|---|---|
| Ignition | CDI |
| Starting System | Kick |
| Transmission | 6-speed |
| Final Drive | Chain |
| Front Suspension | Telescopic fork |
| Front Brakes | Single disc |
| Rear Brakes | Single disc |
| Front Tire | 90/90-21 |
| Displacement | 124 cc |
| Bore x Stroke | 56.0 mm x 50.0 mm |
| Rear Suspension | Swingarm |
| Fuel Capacity | 10 liters |
| Engine Type | Single-cylinder, 2-stroke |
Detailed schedule of maintenance tasks based on odometer reading.
How to check and maintain brake fluid levels.
Procedure to adjust drive chain slack.
Inspection and adjustment of the steering head bearings.
Inspection of tire pressure, tread depth, and sidewalls.
Covers components and specifications for front and rear brakes.
Procedure to replace front brake pads.
Procedure to replace rear brake pads.
Information on front fork components, oil capacity, and spring length.
Procedures for steering head and handlebar installation and tightening.
Inspection of bearings, races, dust seals, and handlebar crown.
Steps to install steering head bearings and components.
Information on rear shock absorber preload and swingarm components.
Steps to disassemble the cylinder head, cylinder, and piston.
Steps to disassemble clutch, primary drive gear, and balancer gear.
Steps to disassemble shifter, transmission, and balancer weight.
Inspection of cylinder bore, piston, and clearance.
Inspection of transmission gears, engagement, movement, and circlips.
Measurement of crankshaft runout, side clearance, and width.
Inspection of crankshaft sprocket, bearings.
Assembly of crankshaft, piston, and balancer components.
Assembly of transmission components including gears and axles.
Steps to assemble clutch and primary drive gear components.
Steps to install balancer gear, primary drive gear, and related parts.
Steps to assemble cylinder head and cylinder.
Installation of piston, pin, and rings.
Steps to reinstall the engine into the chassis.
Diagram and specifications of the carburetor.
Inspection of carburetor components like starter plunger, throttle stop screw, pilot air screw, jet needle.
Steps to assemble the carburetor.
Procedure to measure and adjust carburetor fuel level.
Diagnostic steps for ignition system failures like no spark.
Diagnostic steps for charging system failures like battery not charging.
Diagnostic steps for lighting failures like bulb not working.
Checking lighting system wiring.
Diagnostic steps for meter light failure.
Checking meter light wiring.
Diagnostic steps for tail/auxiliary light failure.
Checking tail/auxiliary light system wiring.
Checking signaling system wiring.
Diagnostic steps for flasher light issues, including bulb and socket.
Checking flasher light system wiring.
Diagnostic steps for brake light failure - bulb.
Checking brake light system wiring.
Diagnostic steps for neutral indicator light failure - bulb.
Checking neutral indicator light system wiring.
Diagnostic steps for oil indicator light failure - bulb.
Checking oil indicator light system wiring.
Diagnostic steps for horn failure - voltage.
Diagnostic steps for the thermo switch.
Checking thermo unit resistance.
Checking cooling system wiring.
Diagnostic steps for servomotor failure - fuse.
Checking servomotor operation.
Checking servomotor system wiring.
Checking servomotor and tachometer operation.
Troubleshooting steps for engine starting problems.
Diagnosing fuel system issues causing starting problems.
Diagnosing electrical system issues causing starting problems.
Diagnosing compression issues causing starting problems.
Diagnosing issues related to poor idle speed.
Diagnosing issues affecting performance at medium and high speeds.
Diagnosing problems with gear shifting.
Diagnosing issues where gears jump out.
Diagnosing clutch slipping or dragging problems.
Diagnosing issues with the braking system, like poor braking effect.
Diagnosing front fork oil leaks and malfunctions.
Diagnosing causes of unstable motorcycle handling.
Diagnosing issues with lights, flashers, and horn.
Diagnosing problems with the Y.P.V.S. system.
Diagnosing engine overheating or over-cooling issues.
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