Yamaha WR250R Service Manual page 176
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Also See for WR250R:
- Owner's manual (98 pages) ,
- Owner's manual (112 pages) ,
- Owner's manual (96 pages)
Table of Contents
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Removing the shift pedal, leads and hoses
11
14
12
9
Order
Coolant
Radiator
Starter motor
1
Shift pedal
2
Drive sprocket cover
3
Gasket
4
Drive sprocket nut
5
Drive sprocket
6
Speed sensor coupler
7
Coolant temperature sensor coupler
8
Generator coupler
9
Crankshaft position sensor coupler
10
Horn lead coupler
11
Fuse box
12
Side cover stay
13
Ground lead
14
Neutral switch lead
15
Ignition coil lead coupler
7
15
10
8
10 Nm (1.0 m
kg, 7.2 ft
•
Job/Parts to remove
ENGINE REMOVAL
13
1
Ib)
18 Nm (1.8 m
•
Q'ty
Drain.
Refer to"CHANGING THE COOLANT" on
page 3-18.
Refer to"RADIATOR" on page 6-1.
Refer to"STARTER MOTOR" on page 5-30.
1
1
1
1
1
1
Disconnect.
1
Disconnect.
2
Disconnect.
1
Disconnect.
1
Disconnect.
1
1
1
1
Disconnect.
1
Disconnect.
5-2
6
10 Nm (1.0 m
kg, 7.2 ft
•
3
2
5
4
95 Nm (9.5 m
kg, 69 ft
•
kg, 13 ft
Ib)
•
•
Remarks
Ib)
•
Ib)
•
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Troubleshooting
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Questions and answers
Bike died won't start, Cranks over normal, won't fire up. Fuel pump runs and then shuts off normal, can you get a short run with starting fluid Shot in throttle body throttle open- (believe not getting fuel pressure to run injector?)
Your Yamaha WR250R may not start even though it cranks and the fuel pump runs due to one or more of the following issues:
1. Spark Plug Issue: If the exhaust smells like gas, fuel is reaching the engine, but it may not be igniting. A faulty or fouled spark plug could be the cause.
2. Fuel Injector Problem: The injector could be stuck closed or clogged, especially if the bike sat unused for a long time. A plugged injector inlet filter may also block fuel delivery.
3. Fuel Pressure: Incorrect fuel pressure (too high or too low) can prevent proper engine operation. The WR250R is designed to run at a specific pressure; too high can cause a rich condition, and too low can make it run lean or not start.
4. Electrical Connections: Check the fuel pump connector and other wiring for corrosion or loose connections, especially after long storage.
5. Air-Fuel Mixture: A dirty air filter or clogged fuel system can disrupt the mixture needed for combustion.
Testing the spark plug, swapping components (like the fuel tank), checking fuel pressure, and cleaning the injector are logical next steps.
This answer is automatically generated