Honda VFR800F 2014 Service Manual page 155

FUEL SYSTEM
PAIR CHECK VALVE INSPECTION
INTAKE
Remove
the PAIR check
valves (page7-231.
Check the
reed [1] of
the pAlR
check valve
for
damage
or
fatigue.
Replace if necessary.
Replace the
PAIR check valve if
the
rubber seat [2]
is
cracked, deteriorated, damaged.
or
rf
there
is clearance
between the
reed and
seat,
DUCT CONTROL SYSTEM
OPERATION INSPECTION
Raise the
rear wheel off the
ground by
placing
the
motorcycle
on its
centerstand (ll AC,
lllbirt
typel;
or
supporting
the
motorcycle securely using
a
hoist
or
equivalent (AC type).
Lift
the fuel
tank and support it (page
34).
Shift the transmission
into neutral.
Turn
the
ignition switch
OFF and
disconnect either
conneetor of the gear
position
switch
1
l1l
or
2l2l.
Start the
engine with the sidestand up and clutch
lever
squeezed.
Check that the
intake duct
valve
[3]
is
opened
at idling.
Check that the
valve
closes
in the following conditions.
-
throttle opening: over
35.
-
engine speed: below 7,800
rpm
After the above
inspection, check
the DTC and erase
it
(page
18-6).
INTAKE DUCT VALVE DIAPHRAGM
INSPECTION
Lift the fuel tank and
support
it (page 3-4).
Disconnect the
vacuum
hose from the
diaphragm
[1].
Connect
a._vacuum
pump
[2]
to the
diaphragm
and
apply specified vacuum.
SPECIFIED VACUUM:
33
kpa
(250
mm
Hg)
The vacuum should hold and
the
intake duct valve
[3]
should remain open.
7
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