2-18 PERIODIC MAINTENANCE
Periodic Maintenance Procedures
Engine Vacuum Synchronization Inspection
○
These procedures are explained on the assumption that the intake and
exhaust systems of the engine are in good condition.
•
Situate the motorcycle so that it is vertical.
•
Remove:
Fuel Tank (see Fuel Tank Removal in the Fuel System
(DFI) chapter)
Air Cleaner Housing (see Air Cleaner Housing Removal in the Fuel System
(DFI) chapter)
Fuel Hose (see Fuel Hose Replacement)
•
Pull off the vacuum hoses [A] from the fittings of each
throttle body.
•
For the US, CA, ID and SEA-B2models, pull off the rubber
caps.
•
Connect a vacuum gauge and hoses [A] (Special Tool: 57001-1369) to the
fittings on the throttle body.
Special Tool - Vacuum Gauge: 57001-1369
•
Connect a highly accurate tachometer lead [B] to one of the stick coil primary
leads.
•
Plug the air switching valve hose end [A] and air cleaner housing fitting [B].
NOTE