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Set up – Zenoah BK3420FL-EZ User Manual

Page 8

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4. Set Up

7. Align the throttle cable along with the liner and tie it

with band. (SE4)

(1) Band (2) Throttle cable (3) Tie loosely

8. Stretch the main pipe and the flexible shaft straight,

thrust the inner shaft into the main pipe while turning it
by hand, and connect the inner shaft to the shaft of the
main pipe. Unless the end of the inner shaft appears
from the flexible shaft, the inner shaft has been
correctly connected to the shaft of the main pipe.
(SE5)

(1) Inner shaft

9. Turn the hole at the end of the flexible shaft upward,

align the square hole of the clutch dram with the
direction of the inner shaft, and thrust the flexible shaft
into the clutch housing until you hear a click. (SE6)

(1) Clutch housing (2) Clutch dram square-hole (3) Hole

After connecting the inner shaft to the shaft of the main pipe,

try to pull out the flexible shaft by hand to make sure the

flexible shaft does not come off.

ADJUSTING THE PLAY OF THE THROTTLE WIRE

If you bend the flexible shaft, the amount of play of the

throttle wire changes. Adjust the play while keeping the

flexible shaft almost in the actual working condition. (SE7)

(1) Flexible shaft

The play of the throttle wire that extends out of the

carburetor with the throttle lever in its original place should

be 1 to 2 mm when lightly pulled by finger. If the play is too

large or small, readjust it as follows. (SE8)

1. Loosen the lock nut and adjust the throttle wire with

the wire brace so that the amount of play is
appropriate. The play becomes larger when the wire
brace is turned clockwise, and becomes smaller when
the wire brace is turned counterclockwise.

2. Tighten the lock nut after adjusting the play, and fix

the wire brace.

(1) Lock nut (2) Throttle wire (3) Wire brace

IMPORTANT

IMPORTANT

SE6

SE7

SE8

SE5

SE4