PERIODIC MAINTENANCE 2-15 Periodic Maintenance Procedures Engine Vacuum Synchronization Inspection NOTE
○These procedures are explained on the assumption that the inlet and exhaust systems of the engine are in good condition.
the motorcycle so that it is vertical. • Situate Remove fuel tank (see Fuel System (DFI) chapter). • Pull off thethevacuum hoses and the rubber cap (s) from the • right fitting of each throttle body. Pull off the vacuum switch valve hose (thick) [A] from the • air cleaner housing [B]. Front [C]
CAUTION Do not remove the inlet air pressure sensor hoses on the left fitting of each throttle body. a commercially available vacuum gauge to these • Connect right fittings of the throttle body as shown. a highly accurate tachometer to one of the stick • Connect coil primary leads. • Plug: Vacuum Switch Valve Hose (thick) and its Air Cleaner Housing Hole Vacuum Hoses of Throttle Assy (see the next figure)
A. Except California
D. Vacuum Switch Valve Hose (small)
G. Canister
B. California
E. Inlet Air Pressure Sensor Hose
H. Vacuum Gauge
C. Front
F. Separator
I. Plugs