Checking The Throttle Body Joint; Checking The Fuel Line; Checking The Crankcase Breather Hose - Yamaha YFM70RY Service Manual

EWA13020
WARNING
Never use low flash point solvents, such as
gasoline, to clean the air filter element. Such
solvents may cause a fire or an explosion.
TIP
After cleaning, gently squeeze the air filter ele-
ment to remove the excess solvent.
ECA13430
NOTICE
Do not twist the air filter element when
squeezing it.
5. Check:
• Air filter element
Damage → Replace.
6. Apply the recommended oil to the entire sur-
face of the air filter element and squeeze out
the excess oil. The air filter element should be
wet but not dripping.
Air filter oil grade
Foam air filter oil
7. Install:
• Air filter element frame
• Air filter element
• Wing bolt
• Air filter case cover
ECA14401
NOTICE
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.
8. Install:
• Seat
Refer to "GENERAL CHASSIS" on page 4-1.
EAS21020

CHECKING THE THROTTLE BODY JOINT

1. Check:
• Throttle body joint "1"
Cracks/damage → Replace.
EAS21030

CHECKING THE FUEL LINE

1. Remove:
• Seat
• Front fender
• Fuel tank
Refer to "GENERAL CHASSIS" on page 4-1.
2. Check:
• Fuel hose "1"
Cracks/damage → Replace.
Loose connection → Connect properly.
3. Install:
• Seat
• Front fender
• Fuel tank
Refer to "GENERAL CHASSIS" on page 4-1.
EAS21070
CHECKING THE CRANKCASE BREATHER
HOSE
1. Check:
• Crankcase breather hose "1"
• Hose (throttle-body-joint-to-throttle-body-left
side) "2"
Cracks/damage → Replace.
Loose connection → Connect properly.
3-15
ENGINE
1
1