Yamaha XMax YP400RA - Owner's Manual > Air filter elements and check hoses and V-belt case air filter element

The air filter elements and the V-belt case air filter element should be serviced at the intervals specified in the periodic maintenance and lubrication chart. Service all air filter elements more frequently if you are riding in unusually wet or dusty areas.

Replacing the air filter elements

1. Place the scooter on the centerstand.

TIP

Continue as follows for each air filter element.

2. Remove the air filter case cover by removing the rubber caps and screws.

Left

1. Screw
2. Air filter case cover
3. Rubber cap

Right

1. Screw
2. Air filter case cover
3. Rubber cap

3. Pull the air filter element out.

Left

1. Air filter element

Right

1. Air filter element

4. Insert a new air filter element into the air filter case.

5. Install the air filter case cover by installing the screws. NOTICE: Make sure that each filter element is properly seated in its case. Always replace both air filter elements at the same time, otherwise poor engine performance or damage to the engine may result. The engine should never be operated without the filter elements installed, otherwise the piston(s) and/or cylinder( s) may become excessively worn.

6. Install the rubber caps.

To clean the air filter check hoses

1. Check the hose at the bottom of both air filter cases for accumulated dirt or water.

Left

1. Air filter check hose

Right

1. Air filter check hose

2. If dirt or water is visible, remove the hose, clean it, and then install it.

Cleaning the V-belt case air filter element

1. Remove panel A.

2. Remove the left air filter case cover.

3. Remove the V-belt air filter case cover by removing the screws.

1. Screw
2. V-belt air filter case cover

4. Remove the V-belt case air filter element by removing the screws.

1. Screw
2. V-belt case air filter element

5. Lightly tap the V-belt case air filter element to remove most of the dust and dirt, and then blow out the dirt with compressed air as shown.

6. Check the V-belt case air filter element for damage and replace it if necessary.

7. Install the V-belt case air filter element by installing the screws.

NOTICE: Make sure that the Vbelt filter element is properly seated in its case.

8. Install the V-belt air filter case cover by installing the screws.

9. Install the left air filter case cover.

10. Install the panel.

Checking the throttle grip free play

The throttle grip free play should measure 3.0-5.0 mm (0.12-0.20 in) at the inner edge of the throttle grip. Periodically check the throttle grip free play and, if necessary, have a Yamaha dealer adjust it.

Valve clearance

The valve clearance changes with use, resulting in improper air-fuel mixture and/or engine noise. To prevent this from occurring, the valve clearance must be adjusted by a Yamaha dealer at the intervals specified in the periodic maintenance and lubrication chart.

Tires

Tires are the only contact between the vehicle and the road. Safety in all conditions of riding depends on a relatively small area of road contact. Therefore, it is essential to maintain the tires in good condition at all times and replace them at the appropriate time with the specified tires.

Tire air pressure

The tire air pressure should be checked and, if necessary, adjusted before each ride.

WARNING

Operation of this vehicle with improper tire pressure may cause severe injury or death from loss of control.

• The tire air pressure must be checked and adjusted on cold tires (i.e., when the temperature of the tires equals the ambient temperature).
• The tire air pressure must be adjusted in accordance with the riding speed and with the total weight of rider, passenger, cargo, and accessories approved for this model.

Tire air pressure (measured on cold tires): 0-90 kg (0-198 lb):

Front: 220 kPa (2.20 kgf/cm², 32 psi)

Rear: 250 kPa (2.50 kgf/cm², 36 psi)

YP400R 90-185 kg (198-408 lb) YP400RA 90-181 kg (198-399 lb):

Front: 220 kPa (2.20 kgf/cm², 32 psi)

Rear: 250 kPa (2.50 kgf/cm², 36 psi)

Maximum load*:

YP400R 185 kg (408 lb)

YP400RA 181 kg (399 lb)

* Total weight of rider, passenger, cargo and accessories

WARNING

Never overload your vehicle. Operation of an overloaded vehicle could cause an accident.

Tire inspection

1. Tire sidewall
2. Tire tread depth

The tires must be checked before each ride. If the center tread depth reaches the specified limit, if the tire has a nail or glass fragments in it, or if the sidewall is cracked, have a Yamaha dealer replace the tire immediately.

Minimum tire tread depth (front and rear):

1.6 mm (0.06 in)

TIP

The tire tread depth limits may differ from country to country. Always comply with the local regulations.

Tire information

This model is equipped with tubeless tires.

Tires age, even if they have not been used or have only been used occasionally.

Cracking of the tread and sidewall rubber, sometimes accompanied by carcass deformation, is an evidence of ageing. Old and aged tires shall be checked by tire specialists to ascertain their suitability for further use.

After extensive tests, only the tires listed below have been approved for this model by Yamaha Motor Co., Ltd.

Front tire:

Size: 120/70-15 M/C 56S

Manufacturer/model: MICHELIN/CITY GRIP

SAVA/DIAMONDS MC28

Rear tire:

Size: 150/70-13 M/C 64S

Manufacturer/model: MICHELIN/CITY GRIP

SAVA/DIAMONDS MC28

WARNING

• Have a Yamaha dealer replace excessively worn tires. Besides being illegal, operating the vehicle with excessively worn tires decreases riding stability and can lead to loss of control.
• The replacement of all wheel and brake-related parts, including the tires, should be left to a Yamaha dealer, who has the necessary professional knowledge and experience to do so.
• Ride at moderate speeds after changing a tire since the tire surface must first be "broken in" for it to develop its optimal characteristics.

Cast wheels

To maximize the performance, durability, and safe operation of your vehicle, note the following points regarding the specified wheels.

• The wheel rims should be checked for cracks, bends, warpage or other damage before each ride. If any damage is found, have a Yamaha dealer replace the wheel. Do not attempt even the smallest repair to the wheel. A deformed or cracked wheel must be replaced.
• The wheel should be balanced whenever either the tire or wheel has been changed or replaced. An unbalanced wheel can result in poor performance, adverse handling characteristics, and a shortened tire life.
• After repairing or replacing the rear tire, tighten the valve stem nut and locknut to the specified torques.

1. Valve stem nut
2. Valve stem locknut

Tightening torques:

Valve stem nut: 2.0 Nm (0.20 m*kgf, 1.4 ft*lbf)

Valve stem locknut: 3.0 Nm (0.30 m*kgf, 2.2 ft*lbf)

Checking the front and rear brake lever free play

Front

1. No brake lever free play

Rear

1. No brake lever free play

There should be no free play at the brake lever ends. If there is free play, have a Yamaha dealer inspect the brake system.

WARNING

A soft or spongy feeling in the brake lever can indicate the presence of air in the hydraulic system. If there is air in the hydraulic system, have a Yamaha dealer bleed the system before operating the vehicle. Air in the hydraulic system will diminish the braking performance, which may result in loss of control and an accident.

Checking the front and rear brake pads

The front and rear brake pads must be checked for wear at the intervals specified in the periodic maintenance and lubrication chart.

Front brake pads

1. Wear indicator groove

Each front brake pad is provided with wear indicator grooves, which allow you to check the brake pad wear without having to disassemble the brake.

To check the brake pad wear, check the wear indicator grooves. If a brake pad has worn to the point that the wear indicator grooves have almost disappeared, have a Yamaha dealer replace the brake pads as a set.

Rear brake pads

Have a Yamaha dealer check each rear brake pad for damage and measure the lining thickness and if necessary, replace them as a set.

See also: