In this issue, we would like to describe how to install OTTO DIY V5 to Sanwa Denshi JLF-TP-8YT series.

OTTO DIY V5 set contents

It is packaged in this way. We will first explain each part.

2 types of main guides

  1. FD (square)
    FD guides have rounded areas around the corners to make diagonal inputs easier to understand while allowing the top of the actuator to sit comfortably.
  2. BFY(Semi-circular)
    The BFY guide is for those who prefer octagonal guides. This is an excellent alternative. It is more rounded around the corners than the octagonal guide, creating the smooth feel of a semi-circle shape while still recognizing oblique inputs.

Modular Body

This part is for mounting a pivot core, with embedded gold M3 nuts.
Enables mounting of Sanwa Denshi TP-MA PCB or HORI Microswitch PCB.


Pivot & Pivot Core

  1. Pivot
    Made of smooth Teflon, the pivot is located inside the V5 pivot core, compatible with SanwaJLF or HoriHayabusa joystick shafts and replaces the existing pivot on the respective lever.
  2. Pivot Core
    It is made of smooth Teflon material and connects to the modular body. It is interchangeable with the V2 Corian style grommet core.

Actuators & Screws

  1. 12mm, 12.5mm, and 13mm oversized actuators
    An actuator is used to actuate each microswitch plunger; the 12.5mm and 13mm actuators are designed to shorten the distance between the actuator and the plunger, speeding actuation.
  2. 2mm hexagonal gold thread
    It replaces the existing screws used for mounting the Sanwa P-1 plate or the Hori Hayabusa plate. A 2 mm hex wrench is required to install the screws.

The following is how to identify the actuator.

There is a hole on the inside, so please check there.

How to install OTTO DIY V5 on Sanwa JLF-TP-8YT series

Prepare JLF-TP-8YT series joystick.

Remove the shaft cover and dust washer.

Start working from the back side.

Main GuideGT-8FRemove the main guide GT-8F.

Remove the switch substrate TP-MA.

Remove the E-ring JLF-E.
To remove the E-ring, refer to the video below. A dedicated tool is best, but a small flat-blade screwdriver can also be used.

Remove actuator JLF-P-5.

Remove the spring JLF-SP.

Remove the spring stopper JLF-P-6.

Remove the base washer JLF-MW.

Remove the main shaft JL-S9F.

It is recommended to use a heat gun or hair dryer to warm up the bolts before removing them, since they are attached with adhesive.
Be careful not to lick the screws if you try to remove it as it is.

JLF-TP-8YT series After disassembly

The parts disassembled up to this point will be used in OTTO DIY V5 with the left parts used and the right parts not used.
Assemble OTTO DIY V5.

Prepare OTTO DIY V5 pivot, pivot core, modular body, and screws.
Prepare grease for spraying grease around the removed flat iron plate JLF-P-1 and the pivot.
The grease prepared this time is Shin-Etsu Chemical G501, because it is used in joysticks made by Seimitsu and for plastic lubrication.
Sanwa grease is Shin-Etsu Chemical G-40M, which is for high-temperature lubrication and general use. It will be suitable for lubrication of sealed bearings, please choose according to your preference.
Some people often use Tamiya's grease for mini 4WD and RC cars, but we do not recommend it because of its different application and viscosity.

Fit the pivot core into the modular body, apply grease to the pivot core area, and allow the grease to acclimate.

Fit the pivot into the pivot core.

Fit the flat iron plate JLF-P-1.

Fasten the gold screws with 2mm hexagonal screws.

Spray grease on the contact surface of the spring stopper JLF-P-6.

Install the spring stopper JLF-P-6.

Prepare a spring JLF-SP and select an actuator of 12mm, 12.5mm, or 13mm size.
The choice of actuator has a great influence on the operating feel.
The larger the size, the quicker and peppier the operation.
If the smoothness of the Teflon material is your main concern, choose 12mm.

Once the actuator is determined, stop the E-ring JLF-E.

Prepare switch substrate TP-MA, FD (square) guide and BYD (semi-circular) guide.

Set the switch substrate TP-MA.

Set the preferred one of FD (square) guide or BYD (semicircle) guide.
The sample image shows the BYD (semicircular) guide.


Install the shaft cover and dust washer.

It's completed. Good job!
Change the settings to suit your preference and the title you play.