in place of the orifice 120 the adapter element 98 can be made from a variety of materials and in one embodiment is constructed from cast aluminum which is appropriate in view of the fact that this adapter element may be exposed to fairly high temperatures in view of its possible positioning above a muffler in alternate embodiments a plastic material capable of withstanding high temperatures could be employed depending upon the orientation of the canister air cleaner 50 with respect to the engine 94 a different rubber hose 100 is used in particular when the canister air cleaner 50 is oriented as shown in fig1 the hose 100 shown in fig1 is utilized however when the canister air cleaner 50 is oriented oppositely to that shown in fig1 e g by rotating the air cleaner 180 degrees a hose having the shape shown in fig1 namely a shape that is the mirror image of that shown in fig1 would be utilized through the use of the appropriate hose depending upon the orientation of the air cleaner 50 the air cleaner can be coupled to the adapter element 98 and thus to the carburetor air inlet without any additional adjustment rotation or other movement of the adapter element relative to the carburetor air inlet therefore the.