Checking The Throttle Body Joint; Checking The Fuel Line - Yamaha WR250R Service Manual

Recommended oil
Foam air filter oil or engine oil
9. Install:
Air filter element frame
G
ECA14401
CAUTION:
Never operate the engine without the air filter
element installed. Unfiltered air will cause
rapid wear of engine parts and may damage
the engine. Operating the engine without the
air filter element will also affect carburetor
synchronization, leading to poor engine per-
formance and possible overheating.
10.Install:
Air filter element assembly
G
11.Install:
Air filter cover
G
12.Install:
Side cover (right)
G
Refer to "GENERAL CHASSIS" on page 4-1.
EAS21020

CHECKING THE THROTTLE BODY JOINT

1. Remove:
Seat
G
Side cover (left/right)
G
Air scoop (left/right)
G
Refer to "GENERAL CHASSIS" on page 4-1.
Fuel tank
G
Refer to "FUEL TANK" on page 7-1.
2. Check:
Throttle body joint "1"
G
Cracks/damage → Replace.
Insulator manifold "2"
G
Cracks/damage → Replace.
1
3. Install:
Fuel tank
G
Refer to "FUEL TANK" on page 7-1.
Air scoop (left/right)
G
Side cover (left/right)
G
Seat
G
Refer to "GENERAL CHASSIS" on page 4-1.
EAS21030

CHECKING THE FUEL LINE

The following procedure applies to all of the fuel,
vacuum and breather hoses.
1. Remove:
Seat
G
Side cover (left/right)
G
Air scoop (left/right)
G
Refer to "GENERAL CHASSIS" on page 4-1.
Fuel tank
G
Refer to "FUEL TANK" on page 7-1.
2. Check:
Fuel hose "1"
G
Cracks/damage → Replace.
Loose connection → Connect properly.
1
3. Fuel tank
Fuel tank
G
Refer to "GENERAL CHASSIS" on page 4-1.
Air scoop (left/right)
G
Side cover (left/right)
G
Seat
G
Refer to "GENERAL CHASSIS" on page 4-1.
3-14
ENGINE
2