Kenmore 148.16154210 Use & Care Manual page 25

Adjust valve control screw
1. Pull all the knobs off of valve stems. Adjust
the screw in the valve hole using the flathead
screwdriver (C). Turn screws 6 complete turns
counterclockwise.
(Fig. 6)
2. Press all the knobs back onto valve stems.
After all the conversions are complete, return heat diffusers to firebox, followed by the grates
and warming rack.
Valve hole
25
Fig. 6