See Figures 1 and 2
The canister stores carburetor and fuel tank vapors while the engine is off, holding them to be drawn into the engine and burned when it starts. This system is on some models beginning 1971, and all models beginning 1973. Look for a black container about the size and shape of a coffee tin can with some hoses attached in the engine compartment. The air filter in this canister should be changed at the intervals shown in the `Service Intervals' chart. To change the filter:
- Loosen the canister clamp screw and raise the canister enough that you can work under it. Remove it as necessary.
- Pull out the old filter from the bottom of the canister.
- Install a new filter, making sure that it covers the whole opening.
- Replace the canister and tighten the clamp screws.