Checking The Carburetor Joint; Checking The Carburetor Hoses; Checking The Exhaust System - Yamaha YZ250 2022 Owner's Service Manual

7. Apply:
• Lithium-soap-based grease
(on the matching surface "a" on air filter ele-
ment)
8. Install:
• Air filter element "1"
• Washer
• Fitting bolt
Fitting bolt
2.0 N·m (0.20 kgf·m, 1.5 lb·ft)
TIP
Align the projection "a" on filter guide with the
hole "b" in air filter case.
1
a
ECA26420
NOTICE
Make sure that the air filter element is prop-
erly seated in the air filter case. The engine
should never be operated without the air fil-
ter element installed, otherwise the piston(s)
and/or cylinder(s) may become excessively
a
b
3-9
worn.
EAM30541

CHECKING THE CARBURETOR JOINT

1. Check:
• Carburetor joint "1"
Cracks/damage  Replace.
1
EAM30542

CHECKING THE CARBURETOR HOSES

The following procedure applies to all of the fuel
and vacuum hoses.
1. Check:
• Fuel hose
• Carburetor breather hose "1"
• Overflow hose "2"
Cracks/damage  Replace.
Loose connection  Connect properly.
1
EAM30221

CHECKING THE EXHAUST SYSTEM

1. Remove:
• Exhaust pipe
• Silencer
Refer to "ENGINE REMOVAL" on page 5-1.
2. Check:
• Exhaust pipe
• Silencer
Crack/damage  Replace.
Refer to "ENGINE REMOVAL" on page 5-1.
3. Check:
• Silencer fiber
Damage  Replace.
4. Replace:
• Silencer fiber
ENGINE
1
2