JN

The number of clip stages for JN jet needles is listed as #1 = 1st stage from the top. The top is the end where you attach the clip. It also includes taper angle and cut-up. The tapered side is on the bottom. The part number is different for large body and small body.

FCR

FCR Tuning - Tuning throttle opening from 1/16 to 1/8 - 22/11/06...

Regarding the current FCR tuning of CBX, I was concerned about the lower throttle opening. It's not a good idea to get caught up in the air-fuel ratio meter, but a partial reading of 10.5 is around throttle opening of 1/16 to 1/8. It is unclear whether this condition is good or bad.
       
カテゴリCBXFCR
タグASCBXFCRFCR-BeginnersJNPSSJ
FCR

FCR Tuning - The number of clip stages of the jet needle is determined by the driving feeling...

You can enjoy changes in the driving feeling that cannot be seen only with lean or rich FCR influence range. When you wear an air-fuel ratio meter, you tend to look at the numbers and judge whether it's lean or rich.Considering the characteristics of engine revving, etc., there are some areas that are difficult to show in the numerical values. Simply put, you can change the number of clip stages one by one and try the number of stages that gives you the driving feeling you like.
       
カテゴリCBXFCR
タグCBXFCRFCR-BeginnersJN
FCR

FCR tuning-jet needle clip stage number change 22/10/16...

CBX FCR tuning. Even though I say I will tune it, I am very satisfied with the current situation, so I am changing it for the sake of knowledge. The number of clip stages has been changed from [2] to [3]. Very good. The number of clip stages will be set to [3] for the time being. If you change the number of clip stages from season to season or over time, you will often find that the ride quality of your motorcycle changes significantly and becomes better.
       
カテゴリCBXFCR
タグCBXFCRFCR-BeginnersJN
CBX

FCR Tuning - Change slow jet from 40 to 42 - 22/10/08...

The other day, I changed the slow jet from 42 to 40. However, it seemed like we were reaching the limit of returning the PS, so we changed it from 40 to 42 again. For me, the boom now is to keep the air-fuel ratio at 12.5 to 13.0 when idling with the throttle fully closed. It feels like the ride becomes milder, which is good.
       
カテゴリCBXFCR
タグAScabtuningCBXFCRFCR-BeginnersJNPS
FCR

Since I changed the FCR-SJ, I checked the startability and touched the PS - 22/09/28...

There are various resets to ensure a comfortable ride. Generally, after changing the SJ, there are many work items as it involves attaching and detaching the cab. ① Adjust the tension of the throttle wire. ②Adjust the PS so that the engine can start. ③Temporarily adjust AS. ④Adjust the idling. ⑤Synchronize. ⑥Take a test run and adjust AS. Adjust the above by going forward and backward through steps 1-6.
       
カテゴリCBXFCR
タグAScabtuningCBXFCRFCR-BeginnersJNPS
FCR

Do not set FCR - strictly prohibited before touring....

The weight of troubleshooting is completely different when you drive with the expectation that trouble will occur in your local area, and when you go far and cause trouble. Basically, no matter what kind of work you do, whether it's changing a tire or anything else, replacing something means that your car will go from being running well to not being able to run, even temporarily. Maintenance is about changing your body from a state where you can't run to a state where you can run better than before, or a state where your endurance is higher than before.
       
カテゴリCBXFCRMaintenance
タグASCBXFCRJNMJPS
FCR

About taper angle and FCR tuning - MJ confirmation from test run - How much does MJ influence? 22/08/20...

Since today is Saturday, I wanted to ride on the CBX, but unfortunately it was about to rain. To shake or not to rain? Anything else? It was a subtle sky pattern. I ended up doing a test drive around my house while checking the weather forecast on my smartphone. So, I will be doing a test run mainly to see how the MJ looks after changing the tuning from last time.
       
カテゴリCBXFCRManual
タグCBXColumnFCRFCR-BeginnersJNMJ
CBX

About FCR-PS. Idle port, slow port and air-fuel ratio at idling...

The other day, when I was carrying around a Carburetor Pilot Screw Adjustment Tool, a certain mass touring group asked me, ``What is this?'' ” I was bombarded with questions in turn. I have come to my own conclusions and done things that I had doubts about since I started tuning up FCR, so I will write about them historically.
       
カテゴリCBXFCR
タグASCBXColumnFCRFCR-BeginnersJNPSSJ
FCR

FCR-tuning SJ and MJ change 22/08/15...

With SJ45, I felt like the screw was opening too much, so I changed it to 42. I chose 42 because I wanted to make fine-tuned tuning, but 40 might be the perfect range for all year round. I feel a little regretful that it might not be necessary to make it look strangely deviate from Bito's initial tuning.
       
カテゴリCBXFCRMaintenance
タグASAS-Uotani-SP2cabtuningCBXFCRFCR-BeginnersJNPS
CBX

Should I change the taper angle and cut-up of FCR? Check the number of clip stages first....

This time I will write in a column. The other day, I had a little conversation about the FCR tuning with the divine engineer who gave me two engines for my CBX free of charge. I was told, ``JN checks the number of clip stages before checking the taper angle.'' According to the master, it's natural that the clip position will change if you change the taper, so if you don't take that into account when purchasing a jet needle, it will be a waste of money.
       
カテゴリCBXFCR
タグCBXFCRFCR-BeginnersJN