Yamaha YP125R Service Manual

ENGINE (YP125R)
3-16
3. Check:
• V-belt case air filter element
Damage → Replace.
4. Apply the recommended oil to the entire sur-
face of the V-belt case air filter element and
squeeze out the excess oil. The V-belt case
air filter element should be wet but not drip-
ping.
5. Install:
• V-belt case air filter element
• V-belt case air duct
• V-belt case cover
EAS37P1098
CHECKING THE THROTTLE BODY JOINT
1. Remove:
• Storage box
Refer to “GENERAL CHASSIS” on page 4-1.
2. Check:
• Throttle body joint “1”
Cracks/damage → Replace.
3. Install:
• Storage box
Refer to “GENERAL CHASSIS” on page 4-1.
EAS37P1099
CHECKING THE FUEL HOSE
1. Remove:
• Storage box
Refer to “GENERAL CHASSIS” on page 4-1.
2. Check:
• Fuel hose “1”
Cracks/damage → Replace the fuel injector
assembly.
Loose connection → Connect properly.
3. Install:
• Storage box
Refer to “GENERAL CHASSIS” on page 4-1.
EAS37P1100
CHECKING THE BREATHER HOSES
1. Remove:
• Storage box
Refer to “GENERAL CHASSIS” on page 4-1.
2. Check:
• Cylinder head breather hose “1”
• Transmission case breather hose “2”
Cracks/damage → Replace.
Loose connection → Connect properly.
NOTICE
ECA37P1047
Make sure the cylinder head breather hose
and transmission case breather hose are
routed correctly.
Recommended oil
Engine oil
T
R
.
.
V-belt case air duct bolt
7 Nm (0.7 m·kgf, 5.1 ft·lbf)
V-belt case cover bolt
7 Nm (0.7 m·kgf, 5.1 ft·lbf)
1
1
1

Yamaha YP125R Specifications

General

Engine Type	Liquid-cooled, 4-stroke, SOHC, 4-valve
Bore x Stroke	52.4 mm x 57.9 mm
Fuel System	Fuel Injection
Ignition System	TCI
Transmission	V-Belt Automatic
Front Suspension	Telescopic fork
Rear Suspension	Unit Swing
Front Brake	Hydraulic single disc, Ø267 mm
Starter System	Electric
Rear Tyre	140/70-14M/C 62P (Tubeless)