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Northern Lights M673D Assembly Instructions Manual page 7

Soundshield
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Mount the rear panel assembly (item 7) to the rear of the enclosure frame. Ensure that the panel is
properly fi tted into the back of the frame, with the panel surface to extrusion being fl ush. Rotate
panel retainer brackets (item 13) until they are directly on top of the extrusion fl ange. Tighten nylock
nuts so the retainer eff ectively clamps the panel against the extrusion fl ange. Caution: do not
overtighten retainer clip nuts, as seal damage could occur.
If engine contains pre-installed pre-formed rubber intake hose, proceed to step 10. Check to see if air
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fi lter element protrudes below air box. If it does, it is an older style element and should be replaced
with new fi lter (item 18) included with kit. Your unit may already be equipped with the new style
fi lter and if so, replacing it is not required. Take cover (item 19) and insert end (indicated with star)
fi rst into intake manifold opening. Now close the intake cover by pushing the remaining clip into
manifold recess. Remove and discard pre-installed grommet in side of intake box. Take the other end
of the intake hose (item 17) and fi rmly push it into the hole on the side of the intake box
(see fi gure 4). Proceed to step 11
Discard items 17, 18 & 19. Install free end of formed rubber intake hose through grommet on side of
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intake box as shown in fi gure 4.
Figure 4: Air snorkel kit for use in sound shield.
L612 02/05
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