Yamaha XMAX YP125R - Service manual > Engine (left side view)

1. Wire harness
2. Intake air temperature sensor
3. Seat lock cable
4. Left tail/brake light assembly

1. Point the end of the plastic locking tie to the left, and then cut off the excess end of the tie to 0-5 mm (0-0.20 in).

Handlebar (top view)

1. Radiator fan motor relay
2. Starting circuit cut-off relay
3. Headlight relay
4. Right handlebar switch lead
5. Front brake hose
6. Fuel pump coupler
7. Fuel sender coupler
8. Fuel hose
9. Left handlebar switch lead
10. Rear brake hose
11. ECU (engine control unit)
12. Positive battery lead
13. Negative battery lead
14. Fuse box 1
15. Fuse box 2
16. Battery
17. Turn signal/hazard relay

1. Point the end of the plastic locking tie to the left, and then cut off the excess end of the tie to 0-5 mm (0-0.20 in).

Throttle body (top view)

1. Rear brake pipe
2. Crankshaft position sensor/stator assembly lead
3. Wire harness
4. ISC (idle speed control) unit coupler
5. Ground lead
6. Intake air temperature sensor coupler
7. Intake air pressure sensor coupler
8. Seat lock cable
9. Fuel injector assembly
10. Radiator inlet hose
11. Starter motor lead
12. Thermostat inlet hose
13. Intake air pressure lead
14. Fuel injector lead
15. Throttle position sensor lead
16. Coolant temperature sensor lead
17. ISC (idle speed control) unit lead
18. O2 sensor lead
19. Throttle body

1. Route the seat lock cable to the inside of the frame.
2. Point the end of the plastic locking tie to the right, and then cut off the excess end of the tie to 0-5 mm (0-0.20 in).
3. Fasten the wire harness at the white tape with a plastic locking tie. Cut off the excess end of the tie to 0-5 mm (0-0.20 in).

General specifications (YP250R)

Engine specifications (YP250R)

Chassis specifications (YP250R)

Electrical specifications (YP250R)

Tightening torques (YP250R)

GENERAL TIGHTENING TORQUE SPECIFICATIONS

This chart specifies tightening torques for standard fasteners with a standard ISO thread pitch.

Tightening torque specifications for special components or assemblies are provided for each chapter of this manual. To avoid warpage, tighten multi-fastener assemblies in a crisscross pattern and progressive stages until the specified tightening torque is reached. Unless otherwise specified, tightening torque specifications require clean, dry threads. Components should be at room temperature.

1. Distance between flats
2. Outside thread diameter

Engine tightening torques

Cylinder head tightening sequence

Muffler tightening sequence

Chassis tightening torques

TIP

Lower ring nut

1. Tighten the lower ring nut 38 Nm (3.8 m*kgf, 27 ft*lbf) with a torque wrench and the steering nut wrench, and then loosen the nut 1/4 turn.

2. Tighten the lower ring nut 22 Nm (2.2 m*kgf, 16 ft*lbf) with a torque wrench and the steering nut wrench.

3. Install the rubber washer and the center ring nut.

4. Finger tighten the center ring nut, align the slots of both ring nuts, and then install the lock washer.

5. Hold the lower and center ring nuts, and then tighten the upper ring nut 75 Nm (7.5 m*kgf, 54 ft*lbf) with a torque wrench and the steering nut wrench.

TIP

Swingarm mounting bolt

1. Temporarily install the rear wheel axle nut "1".

2. Temporarily install the swingarm mounting bolt (upper side) "2", then the swingarm mounting bolt (lower side) "3".

3. Tighten the rear wheel axle nut to 135 Nm (13.5 m*kgf, 98 ft*lbf).

4. Tighten the swingarm mounting bolt (upper side), then the swingarm mounting bolt (lower side) to 59 Nm (5.9 m*kgf, 43 ft*lbf).

Swingarm tightening sequence

Lubrication points and lubricant types (YP250R)

ENGINE

Chassis

See also: