Triumph Rocket III Classic Service Manual page 414

Fuel System/Engine Management
Evaporative Control System - Engine Off
When the engine is switched off, hydrocarbon fuel vapour passes down the breather pipe A through the roll-over valve to
the canister. Vapour is then stored in charcoal layers within the canister.
TO FUEL TANK
~
ROLL OVER VALVE
CANISTER PIPE C
\-f
THROTTLE BODIES
I"---~
PIPE B
PURGE CONTROL VALVE
11.210
Service Manual - Rocket 1111 Classic I Touring