Carbon Canisters

Canisters are mounted in engine compartment and consist of containers filled with activated carbon. Vent line from fuel tank is connected to top of primary canister and fuel vapors from tank are absorbed by activated carbon when engine is not running.

A second vent line from top of primary canister is connected to constant vacuum area of carburetor so that when engine is running, fuel vapors will be drawn into the engine and burned. This line is also connected to the crankcase ventilation system. A third vent valve line on top of secondary canister connects to front of carburetor. A line at bottom of secondary canister connects to the anti-run-on control valve.