Secondary Air Supply System; Drive Chain Slack Inspection - Honda VTR1000F Service Manual

MAINTENANCE
Check the radiator air passage for clogging or dam-
age.
Straighten bent fins with a small, flat blade screw-
driver and remove insects, mud or other obstruc-
tions with compressed air or low pressure water.
Replace the radiator if the air flow is restrected over
more than 20% of the radiating surface.
Install the radiator grille and front fairing (page 2-3).
SECONDARY AIR SUPPLY SYSTEM
Check the air supply hoses between the pulse sec-
ondary air injection (PAIR) control valve and PAIR
check valves for damage or loose connections.
Check the air supply hoses for cracks or deteriora-
tion.
NOTE:
If the hoses show any signs of heat damage, in-
spect the PAIR check valves (page 5-20).
Check the vacuum tubes between the rear cylinder
head vacuum joint and PAIR control valve for
deterioration, damage or loose connections. Also
check that the tubes are not kinked or pinched.
For PAIR control valve inspection, see page
5-19.
DRIVE CHAIN
3-14
CHAIN SLACK INSPECTION
Never inspect and adjust the drive chain while the
engine is running.
Turn the ignition switch OFF, place the motorcycle
on its side stand and shift the transmission into
nautral.
Check the slack in the drive chain lower run mid-
way between the sprockets.
CHAIN SLACK: 30-40 mm (1.2-1.6 in)
PAIR CONTROL VALVE
AIR SUPPLY HOSES
PAIR CHECK VALVE