Yamaha XMAX YP125R - Service manual > Cleaning the v-belt case air filter element

1. Remove:

• V-belt case air filter cover "1"
• V-belt case air filter element

2. Clean:

• V-belt case air filter element "1" Blow compressed air onto the outer surface of the V-belt case air filter element.

3. Check:

• V-belt case air filter element Damage → Replace.

NOTICE

Since the V-belt case air filter element is a dry type, do not let grease or water contact it.

4. Install:

• V-belt case air filter element
• V-belt case air filter cover

Checking the throttle body joint

1. Remove:

• Storage box

2. Check:

• Throttle body joint "1"

Cracks/damage → Replace.

3. Install:

• Storage box

Checking the fuel hose

1. Remove:

• Storage box

2. Check:

• Fuel hose "1"

Cracks/damage → Replace the fuel injector assembly.

Loose connection → Connect properly.

3. Install:

• Storage box

Checking the breather hoses

1. Remove:

• Storage box

2. Check:

• Cylinder head breather hose "1"
• Transmission case breather hose "2"

Cracks/damage → Replace.

Loose connection → Connect properly.

NOTICE

Make sure the cylinder head breather hose and transmission case breather hose are routed correctly.

3. Install:

• Storage box

Checking the exhaust system

1. Check:

• Exhaust pipe "1"
• Muffler "2"

Cracks/damage → Replace.

• Exhaust system connection

Exhaust gas leaks → Replace the gasket "3".

2. Check:

• Tightening torque

Exhaust pipe nut 20 Nm (2.0 m*kgf, 14 ft*lbf)

Muffler joint bolt 14 Nm (1.4 m*kgf, 10 ft*lbf)

Muffler mounting bolt 65 Nm (6.5 m*kgf, 47 ft*lbf)

O2 sensor 45 Nm (4.5 m*kgf, 32 ft*lbf)

Checking the coolant level

1. Stand the vehicle on a level surface.

TIP

• Place the vehicle on the centerstand.
• Make sure the vehicle is upright.

2. Check:

• Coolant level

The coolant level should be between the maximum level mark "a" and minimum level mark "b".

Below the minimum level mark → Add the recommended coolant to the proper level.

NOTICE

• Adding water instead of coolant lowers the antifreeze content of the coolant. If water is used instead of coolant, check, and if necessary, correct the antifreeze concentration of the coolant.
• Use only distilled water. However, if distilled water is not available, soft water may be used.

3. Start the engine, warm it up for several minutes, and then turn it off.

4. Check:

• Coolant level

TIP

Before checking the coolant level, wait a few minutes until it settles.

Checking the cooling system

1. Remove:

• Storage box
• Bottom cover
• Footrest board

2. Check:

• Radiator "1"
• Radiator inlet hose "2"
• Radiator outlet hose "3"
• Radiator filler hose "4"
• Coolant reservoir hose "5"
• Thermostat cover "6"
• Thermostat inlet hose "7"

3. Install:

• Footrest board
• Bottom cover
• Storage box

Changing the coolant

1. Remove:

• Bottom cover

2. Remove:

• Coolant reservoir cap "1"

3. Disconnect:

• Coolant reservoir hose "2"

4. Drain:

• Coolant (from the coolant reservoir)

5. Remove:

• Radiator cap "1"

WARNING

A hot radiator is under pressure. Therefore, do not remove the radiator cap when the engine is hot. Scalding hot fluid and steam may be blown out, which could cause serious injury.

When the engine has cooled, open the radiator cap as follows: Place a thick rag or a towel over the radiator cap and slowly turn the radiator cap counterclockwise to allow any residual pressure to escape. When the hissing sound has stopped, remove the cap.

6. Remove:

• Coolant drain bolt (water pump) "1" (along with the copper washer)

7. Drain:

• Coolant (from the engine and radiator)

8. Install:

Coolant drain bolt (water pump) (along with the copper washer )

Coolant drain bolt (water pump) 10 Nm (1.0 m*kgf, 7.2 ft*lbf)

9. Connect:

• Coolant reservoir hose

10.Fill:

Cooling system (with the specified amount of the recommended coolant)

Recommended antifreeze

High-quality ethylene glycol antifreeze containing corrosion inhibitors for aluminum engines

Mixing ratio 1:1 (antifreeze:water)

Radiator capacity (including all routes) 1.00 L (1.06 US qt, 0.88 Imp.qt) Coolant reservoir capacity (up to the maximum level mark) 0.25 L (0.26 US qt, 0.22 Imp.qt)

TIP

The specified amount of coolant is a standard amount. Fill the cooling system with coolant until coolant comes out of the air bleed bolt hole "1".

Handling notes for coolant

Coolant is potentially harmful and should be handled with special care.

WARNING

• If coolant splashes in your eyes, thoroughly wash them with water and consult a doctor.
• If coolant splashes on your clothes, quickly wash it away with water and then with soap and water.
• If coolant is swallowed, induce vomiting and get immediate medical attention.

NOTICE

• Adding water instead of coolant lowers the antifreeze content of the coolant. If water is used instead of coolant, check, and if necessary, correct the antifreeze concentration of the coolant.
• Use only distilled water. However, if distilled water is not available, soft water may be used.
• If coolant comes into contact with painted surfaces, immediately wash them with water.
• Do not mix different types of antifreeze.

11.Install:

• Radiator cap

12.Fill:

• Coolant reservoir (with the recommended coolant to the maximum level mark "a")

13.Install:

• Coolant reservoir cap

14.Start the engine, warm it up for several minutes, and then turn it off.

15.Check:

• Coolant level

TIP

Before checking the coolant level, wait a few minutes until the coolant has settled.

16.Install:

• Bottom cover

See also: