Checking The Intake Funnels; Removing The Air Filter Case And Intake Funnels - Yamaha VMAX 2009 Service Manual

EAS2S31005

CHECKING THE INTAKE FUNNELS

1. Check:
• Intake funnel servo motor operation
M MMM M MMM M M MMM M
a. Apply current to the intake funnel servo motor
and check that the variable intake funnel
seals mates with the fixed intake funnels (Il-
lustration "A").
b. Reverse the polarity on the intake funnel ser-
vo motor and check that the variable intake
funnels contacts the upper air filter case (Il-
lustration "B").
TIP
The variable intake funnels should move
smoothly and should not make any unusual
sound.
A
A. Down
B. Up
L LLL L LLL L L LLL L
2. Check:
• Intake funnel servo motor
Damage/scratches → Replace.
• Variable intake funnel lever shaft
• Variable intake funnel holder shaft
• Variable intake funnel assembly
• Fixed intake funnels
Cracks/damage → Replace.
• Variable intake funnel seals
• Lower air filter case gaskets
Damage/wear → Replace.
EAS2S31002
REMOVING THE AIR FILTER CASE AND
INTAKE FUNNELS
1. Remove:
• Upper air filter case
TIP
Loosen the upper air filter case screws in proper
sequence as shown.
M MMM M M MMM M M MMM M
B
L LLL L L LLL L L LLL L
2
2
MMM
2
2
2
2. Remove:
• Intake funnel servo motor
EWA2S31027
WARNING
• Handle the intake funnel servo motor with
special care.
• Never subject the intake funnel servo mo-
tor to strong shocks. If the intake funnel
servo motor is dropped, replace it.
3. Remove:
• Variable intake funnel seals "1"
TIP
Be careful not to break the pin "a" on each vari-
able intake funnel seal when removing the seals.
LLL
4. Remove:
• Variable intake funnel holder shaft
TIP
Remove the variable intake funnel holder shaft
only if the threads are damaged, rusty, or worn.
5. Remove:
• Variable intake funnel lever shaft
TIP
• To remove the variable intake funnel lever
shaft, slide the bushing 1 "1" in the direction.
• When sliding bushing 1 "1", be careful not to
break the tab "a" on each side of the bushing.
7-8
AIR FILTER CASE
2
2
1
2
2
a
1
2