Osburn Stratford OB04002 Installation And Operation Manual page 89

Stratford Fireplace Installation and Operation Manual
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3. Using a power screwdriver
and hex tip 5/16", remove
the slab holder (D) and the
left refractory slab (E).
4. Starting with the rear tube,
lean and insert the right end
of the secondary air tube
into the rear right channel
hole. Then, lift and push the
tube towards the right inside
the hole in the right channel.