Checking The Canister; Checking The Purge Cut Valve Solenoid; Adjusting The Exhaust Gas Volume; Replacing The Air Filter Element - Yamaha MT-09 2021 Service Manual

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EAS31922

CHECKING THE CANISTER

1. Remove:
• Rider seat
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
• Fuel tank center cover
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
2. Check:
• Canister
• Canister purge hose
• Fuel tank breather hose
• Canister breather hose
Cracks/damage → Replace.
Loose connection → Connect properly.
Refer to "FUEL TANK" on page 7-1.
3. Install:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Fuel tank center cover
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
• Rider seat
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
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PERIODIC MAINTENANCE
EAS33546
CHECKING THE PURGE CUT VALVE
SOLENOID
Refer to "CHECKING THE PURGE CUT VALVE
SOLENOID" on page 7-4.
EAS30799

ADJUSTING THE EXHAUST GAS VOLUME

TIP
• Be sure to set the CO density level to standard,
and then adjust the exhaust gas volume.
• To adjust the exhaust gas volume, use the CO
adjustment mode of the YDT. For more infor-
mation, refer to the operation manual of the
YDT.
1. Remove the protective cap, and then connect
the YDT to coupler.
Refer to "YDT" on page 9-3.
Yamaha diagnostic tool USB
90890-03267
Yamaha diagnostic tool (A/I)
90890-03264
TIP
• Yamaha diagnostic tool (A/I) (90890-03264) in-
cludes YDT sub harness (6P) (90890-03266).
• If you already have Yamaha diagnostic tool
(A/I) (90890-03262), YDT sub harness (6P)
(90890-03266) is separately required.
EAS30628

REPLACING THE AIR FILTER ELEMENT

1. Remove:
• Rider seat
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
• Fuel tank center cover
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
2. Remove:
• ECU (Engine Control Unit) "1"
• Air filter case cover "2"
Refer to "GENERAL CHASSIS (2)" on
page 4-10.
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