Model Tech Magic Formula 3D ARF Manual page 21

STEP 2: INSTALLING THE WHEELS AND WHEEL PANTS
Use 220 grit sandpaper to sand the edges of the wheel pant opening smooth.
Slide one main gear wheel onto one M4 x 35mm threaded axle, flat side first.
IMPORTANT When you tighten the lock nut, the wheel should spin freely and have only slight side to side play. If the
wheel is tight, remove one flat washer and retighten the lock nut. It may be necessary to remove 1 or 2 flat washers to achieve
a perfect fit.
Using a modeling knife, carefully cut away the material from over the
wheel opening in one wheel pant.
Drill a 5/32" diameter hole into one side of the wheel pant, using the
molded dimple as your guide.
Using a modeling knife, carefully cut a slot from the hole you drilled
down to the bottom of the wheel pant, as shown.
This slot will allow you to slide the wheel pant over the threaded axle.
Slide one nylon spacer up against the wheel, then slide three M4 flat
washers up against the nylon spacer.
Thread one M4 lock nut onto the threaded axle and tighten it firmly.
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