Page 2 | CBX-LALALA HONDA Mortorcycle CBX1000 FCR Carburetor

FCR Tuning - Test Ride with Awareness of Shift Position - 2023-06-17...

I'm still not quite able to tune it perfectly yet. Recently, I had the opportunity to ride on the highway. During the ride, I noticed something: I realized that I haven't been tuning with much attention to the shift position.

2023.06.20

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Carburetor synchronization is not the kind of maintenance where you can fail – the challenging part is the preparation....

Carburetor synchronization is a task that can be considered simple. The challenging part is that the preparation before the task can be a high hurdle for beginners. Once the preparation is complete, most people are able to successfully perform the synchronization on their own.

2023.06.16

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FCR Tuning - Adjusting throttle openings below 1/4 with the air screw, slow jet, and jet needle straight diameter - 2023-06-11...

This time, I will write about the air screw, slow jet, and the straight diameter of the jet needle from my perspective. This primarily concerns the throttle openings from about 1/4 to 1/2. Recently, I addressed and improved the issue where the throttle would hesitate during rapid opening—whether it was lean or rich was unclear. I will document the improvements made.

2023.06.12

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FCR Tuning - Jet Needle Clip Position and Accelerator Pump Diaphragm Replacement - 2023-06-10...

I was concerned about the throttle opening being less than 1/4, so I made some adjustments. Here’s what I did:①Changed the clip position on the jet needle.②Set the acceleration pump diaphragm to the standard output.I will discuss both points. There is an important note: do not perform these adjustments simultaneously.

2023.06.12

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FCR Tuning - Adjusting Accelerator Pump Timing and Air Screw - 2023-06-05...

Recently, I was concerned about the throttle opening being less than 1/4, so I made various adjustments. It seemed that the AS (air screw) wasn’t opened enough, so I opened it slightly more, and it felt significantly better. I also experimented with the accelerator pump by turning it off, setting it to 0.6mm, and then to 1.0mm, and adjusted the discharge timing accordingly.

2023.06.06

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Which is better, the Keihin FCR carburetor or the CRS carburetor? Of course, the FCR carburetor....

I’m writing a column comparing which is superior between the FCR and CRS carburetors. It’s not just a broad statement that the FCR is better because it’s a newer model. Instead, I’ve heard compelling explanations from professionals that should make you understand why.

2023.06.02

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FCR Tuning - Adjust the air screw to be slightly lean within the possible range, then adjust the accelerator pump - 2023-05-27...

I adjusted the air screw’s return setting and also changed the start position of the accelerator pump’s discharge. It’s been a while since I worked on the FCR. After a light morning ride with the usual 9F rider, I did the tuning.

2023.05.29

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FCR Tuning - Changing the Straight Diameter of the JN Jet Needle - 2023-05-09...

CBX1000 FCR Setting.Since last month, I have been gradually fine-tuning the settings. The idle and main jet are mostly decided. I’m focusing on the range affected by the straight diameter of the JN (Jet Needle), so this time I will change the straight diameter and take it for a test ride to see how it performs.

2023.05.09

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FCR Tuning - JN Jet Needle Straight Diameter and Clip Position - 2023-05-03...

Since changing the main jet, I’ve felt a power increase in my CBX1000. I’ve also been interested in trying changes to the slow jet and jet needle. I generally avoid adjusting the SJ (slow jet) when tuning the FCR, unless it’s beyond the adjustment range of the AS (air screw). For this reason, I decided to change the JN (jet needle).

2023.05.06

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FCR Tuning - Carburetor Synchronization - Is the Balance of Your Vacuum Gauge Correct?...

I will be writing a column about the zero calibration of vacuum gauge needles. To put it briefly, it's advisable to assume that the zero position of the needles on a four-bank vacuum gauge is generally miscalibrated.

2023.05.05

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