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13/16"
21 mm
2-7/8"
73 mm
Front Edge Of
Back Edge Of
Back FIN-LOK™
Motor Tube
Ring
Thrust
Ring
Thrust
Ring
Flange
1. Cement the thrust ring flange (1/16"/1.6 mm thick) to the
thrust ring (7/16"/11 mm long). Set the thrust ring assem-
bly aside to dry.
2. Find the line drawn along the side of the motor tube. Using
the Location Guide printed along the top edge of this
instruction sheet, cut a 1/4" (6 mm) long slot 4-5/8"
(117mm) from the back end of the motor tube and next to
the line on the motor tube as shown.
3. Using the Location Guide, make a mark along the motor
tube line 2-7/8" (73 mm) from the back end of the motor
tube. This mark locates where the back edge of the front
FIN-LOK™ ring will be. Make another mark 13/16" (21
FIN-LOK™
AERO-FIBRE™
Centering
Ring
NOTE: FROM THIS POINT ON, DO NOT USE ANY
CEMENT UNTIL REACHING ASSEMBLY STEP 5.
1. With their motor hook channels aligned with the motor
hook, slide a FIN-LOK™ ring and then an AERO-FI-
BRE™ centering ring over the front end of the motor
tube. Push on the centering ring until the back edge of the
FIN-LOK™ ring is moved to the forward most mark made
in Step 3 above. (NOTE: The rings are designed to be a
tight fit on the motor tube. If the rings are difficult to slide
onto the motor tube, round the inside edges of the rings
with sandpaper. If the FIN-LOK™ rings need to be turned
4-5/8"
117 mm
Back Edge Of
Front FIN-LOK™
MOTOR TUBE ASSEMBLY
Motor
Hook
Motor
Tube
FIN-LOK™ ASSEMBLY
Ring
Ring
Line
13/16"/21mm And 2-7/8"/73mm
FIN-LOK™Ring
From Back Edge Of Motor Tube
Location Marks
mm) from the back end of the motor tube. This mark
locates where the front edge of the rear most FIN-LOK™
ring will be.
4. Insert the tab of the motor hook into the slot cut into the
motor tube. Use a small dowel to apply several drops of
cement around the inside of the motor tube just behind
where the motor hook comes through the motor tube wall.
Then, with the thrust ring flange facing the back, insert the
thrust ring assembly into the motor tube. Use the motor
adaptor to push the thrust ring assembly forward until it
stops against the tab of the motor hook. Remove the
motor adaptor.
Motor
Tube
after they are on the motor tube, use a small piece of cloth
to provide a better grip.)
2. Slide the other FIN-LOK™ ring and then a centering ring
over the back end of the motor tube. Push on the
centering ring until the front edge of the FIN-LOK™ ring
is at the rear-most mark made in Step 3.
3. Using the line on the motor tube as a guide, gently twist the
back centering ring slightly until the fin locks of the back
FIN-LOK™ ring are aligned with the fin locks of the front
FIN-LOK™ ring.
2
LOCATION
1/4"
GUIDE
6 mm
Motor
Hook
Slot
4-5/8"/117mm
Slot For
From Back Edge Of
Motor
Motor Tube
Hook
Front
End
1/2"
13 mm
Front
End
Motor
Hook
Channels
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