Crawler assembly manual

Step #3 Drilling the Servo Horns

Item Qty Description

(B) (2) Servo Horns

Use Fig #6 as a guide. The Servo Horns (B) need to have

one of the outside holes enlarged. If you do not have a

7/64” drill bit you can enlarge the hole with a hobby knife.

When using a knife, carve from each side to keep the hole

even. Make the hole a little smaller than the screw so that

threads will be made when the screw goes in. Compare

your work to Fig #7 then proceed to Step #4.

Fig #6 Fig #7

Step #4 Assembling Middle Legs

Item

Qty Description

(B) (2) Servo Horns

(E) (4) Nylon Washers

(F) (2) 3 mm (1/8″) Nylon Spacer

(G) (4) Push Arms

(J) (2) M3x18 Phillips Pan Head Screws

(N) (2) Nylon Insert Locknuts

(Q) (2) Plastic Screw Covers

Use Fig #8 as a guide to each assembly of the Middle Legs.

Insert screw (J) through screw cover (Q). Next insert screw

through hole of Push Arm (G). Add a washer (E), another Push

Arm (G), then another Nylon Washer (E). Insert the screw

through the hole of the Middle Leg (O), then add the Nylon

Spacer (F). Screw into the large hole on Servo Horn (B). The

Screw will make its own threads going into the Servo horn.

Tighten until all parts can still rotate freely but are not sloppy.

Next screw Locknut (N) onto Screw (J) until snug against the

Servo Horn (See Fig #9). Before continuing, position the pieces

exactly as they appear in Fig #9. Double check your work then

proceed to Step #5.

Fig #8 Fig #9

B B

Drill

7/64

″

(2.8 mm)

Ream

Hole

Larger