Spektrum DX18 SPM18000 User Manual

SPEKTRUM DX18 • TRANSMITTER INSTRUCTION MANUAL

The transmitter is manufactured with a smooth friction strip and 
the included optional ratchet strip may be installed if desired. 

 Always power off the transmitter, disconnect 

and remove the battery before opening the transmitter 

case. Not doing so could result in property damage or injury. 

1. Remove the battery door and disconnect the battery from 

your transmitter. 

2. Carefully pull up the top of the left and right rear hand grips 

on the back of the transmitter to expose the 2 case screws. 
Tip: Only the top portion of the grip needs to be pulled back, 
the entire grip does not need to be removed to access the 
case screws.

3. Carefully remove and keep 4 screws from the back of the 

transmitter (2 in lower corners and 2 under the back hand 
grips). 

4. Carefully open the transmitter case so no wires are 

stretched or pulled. 

5. Remove and keep 2 screws from the installed throttle 

ratchet strip. 

6. Do not remove grease from plastic part under the strip.
7. Attach the strip to the gimbal using the 2 screws. 
8. Tighten the spring tension screw to get desired stick tension. 

 Make sure no wires or components are 

pinched or damaged while installing the back cover.

9. Carefully close the transmitter case using the 4 screws and 

re-install the hand grips. 

10. Connect the battery to your transmitter.

•  Pull up the top of the rear grip on the back of the transmitter 

to adjust the friction strip on the throttle gimbal. Only the 
top of the grip must be pulled up to access the adjustment 
screw, the entire grip does not need to be removed. 

•  Use a small Phillips screwdriver to tighten or loosen the 

screw for friction strip. 

•  Reinstall the top of the rear grip after completing the 

adjustment as desired. 

NOTICE: Always do a test of stick tension while turning these 
screws to ensure stick tension is not too loose or too tight. 
Tightening a screw too much can damage a spring. Loosening a 
screw too much can let a spring fall off and cause short-circuit 
in the transmitter. 

1

Throttle friction strip tension 
screws

2

Gimbal spring covers

3

Friction straps access screws
(Throttle Ratchet Strip installation)

3

2

1