[Unicorn GSX1200S] Full maintenance complete! The reborn oil-cooled Katana undergoes final verification test run on Chiba’s Sotobo coast

The GSX1200S had low mileage but looked pretty worn overall.
It’s cleaned up nicely now (*´ω｀*)

I made fine adjustments, did a final check, and took it for a test ride.

With the Yoshimura ST-1, the oil-cooled 1200 delivers its true output…
It pulls smoothly from low to high RPMs with a satisfying growl.
The balance between the stock carb, muffler, and Yoshimura ST-1 output is really well-tuned.

If the grommet is soft, the throttle cable won’t break easily

I replace anything that can be replaced.
The difference in softness is huge.

With a soft grommet, the throttle cable won’t chip or break as easily.
Ask me to do it while I’m working on something else. *Sometimes I’m not so thoughtful…

We’re coming full circle back to Kure. *Parts cleaner too
Lubricate rubber grommet-related parts with silicone-based products.

It’s subtly hard to fly off but not overly sticky—a perfect balance.
It’s so versatile, every home should have one.

↑There’s something like this too… I’m kinda interested (*´ω｀*)

I fix broken throttle cables with Megamix.
It holds better than any reinforcement.

I create a ridge to gain surface area
“fixing the break point with a surface” · “wrapping around the body to integrate it” and make it one piece.
This makes it super solid.

When bonding, cleaning, degreasing, and roughing the surface are absolutely crucial.
If you’re stuck, Megamix is really handy—give it a try.

The nutter gave up the ghost.

Spinning… spinning around—a nutter that just won’t stay put…
It’s as annoying as a loose connector pin…

So I remove it like this. A step drill makes it surprisingly easy (*´ω｀*)

Back in the day, there was a trick of cutting a slit in the hole.
But nowadays they’re hexagonal, and there are some products that grip a bit better.

If you tighten it properly, it basically won’t spin, so tighten it well.

I make a custom tool tip for my hydraulic punch and tighten with that.
Various products that look the part are out there, but in the end… hydraulic is best.
That’s what I think.

Yoshimura Spring 118-000-1000—replace when dirty

When it starts looking dirty, replace it before it breaks.
If it breaks and falls off and someone else gets a flat tire, that’d be sad, right?

Replace before it breaks! Do it regularly.

Lately, threading silicone tubing through is trending.
It dampens vibration noise and you don’t worry about dirt—black looks great.

I use 9mm inner diameter, 12mm outer diameter tubing. *1.5mm wall thickness.
It’s just right.
I use about 70mm per cable.

When threading it, apply silicone spray too.
It makes insertion easier and adds a bit of rust protection.

Turn signal lighting unstable?

Recently found some unused 040 still in stock.
When I wiggle the turn signal wiring connection, it flickers on and off.
Turns out it’s probably not here but somewhere that’s been shrink-wrapped.
I’ll check it during the caliper overhaul.

I replaced the air filter too.
It was pretty corroded. Now we’ve got fresh air.

Mostly done, but…

The front Brembo is a bit weepy.
It’s definitely leaking, so I’ll do an overhaul.

Seeing problem after problem pop up “the oil-cooled 1200 is getting old” I really feel it.
There’s a cut like this nearby…
I had a bad feeling if I went further, so I turned back.

Test riding on Chiba’s Sotobo coast is so much fun (*´ω｀*)
We’re almost there!

This GSX1200S work summary