Checking The Fuel Line (Primary Injectior); Checking The Fuel Line (Secondary Injector); Checking The Spark Plugs - Yamaha YZF-R1(B) 2012 Service Manual

EAS21030
CHECKING THE FUEL LINE (Primary injec-
tor)
The following procedure applies to all of the
fuel, vacuum and breather hoses.
1. Remove:
• Rider seat
Refer to "GENERAL CHASSIS" on page
4-1.
2. Remove:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Air filter case
Refer to "AIR FILTER CASE" on page 7-
5.
3. Check:
• Fuel hose "1"
• Vacuum hoses "2"
• Breather hose "3"
• Over flow hose "4"
Cracks/damage → Replace.
Loose connection → Connect properly.
TIP
Before removing the fuel hoses, place a few
rags in the area under where it will be remov-
ing.
ECA14940
Make sure the fuel tank breather hose is
routed correctly.
PERIODIC MAINTENANCE
4. Install:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
5. Install:
• Rider seat
Refer to "GENERAL CHASSIS" on page
4-1.
EAS14B1114
CHECKING THE FUEL LINE (Secondary
injector)
1. Remove:
• Rider seat
Refer to "GENERAL CHASSIS" on page
4-1.
2. Remove:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
3. Check:
• Fuel hose "1"
Cracks/damage → Replace.
Loose connection → Connect properly.
TIP
Before removing the fuel hoses, place a few
rags in the area under where it will be remov-
ing.
4. Install:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
5. Install:
• Rider seat
Refer to "GENERAL CHASSIS" on page
4-1.
EAS20680

CHECKING THE SPARK PLUGS

The following procedure applies to all of the
spark plugs.
1. Remove:
• Side cowlings
• Lower cowlings
Refer to "GENERAL CHASSIS" on page
4-1.
3-4