can make out the number on the jet it’s to screwed up. It is the middle carburetor. The company that I corresponded with told me it was a 120 but Yamaha discontinued and said I could try a 125. Here’s the float on #1 carburetor. I should be able to compare it with at least one more today when finished cleaning.
I couldn’t make out the numbers. Will have a magnifying glass tomorrow and see if that helps. They had told me my motor had the 120 but not available and that their technician said better to go up than down. I’ll try looking at the numbers again tomorrow. Who ever before me had already scared up some of the jets probably using the wrong screw driver. Just for kicks I put the float on carburetor 2 last night and it stood way up like they all did when I removed them. This morning I finished cleaning and polishing #2 and now the float sits down just like the first one. All that polishing really makes a difference. Anyway number 3 is not damaged maybe I can polish and read that number but I’ll look at both with the magnifying glass.
1and3 are 115 jets. Unfortunately everywhere I checked the 125 is at least a month away in Japan. Unless you have a source I may have to leave it for now.
Check your inbox for a PM....
You’re right about those seats I’ve spent several hours on each one until the cotton came out clean. I tried to remove them with a thin wall 10 mm socket and they don’t want to budge. I was going to inspect the little o ring on the end of them. Hopefully they’re ok. No telling how old the seats are. I know I can blow on the fuel intake with my mouth and they’re not leaking until I turn the carburetor back over then they open so I guess they’re fine.
I hate to admit this. When I cleaned them I shot c cleaner through then air and the passages where open so I didn’t bother to run anything through the holes . Then I polished them like new. Blew carburetor cleaner and air again. This was before I had a magnifying glass. I’m guessing toothpaste was in them and dried , not sure. Putting a toothpick in them clogged all three yesterday. I soaked them all night and that didn’t seem to help so I figured toothpaste and mixed vinegar and lemon juice to dissolve it. This worked and this time I used a bread tie and cleaned the first one. Unfortunately I checked with the magnifying glass and I had scratched it inside pretty bad as well as the others from using to big of wire. I fell on my sword and going to get new ones. Next thing is after polishing the last seat and needle it seems to want to take a split second to drop open when I turn the carburetor over. Is that ok or should I try polishing more? Oh I’m going back through everything with a magnifying glass too. I thought I was being careful to do things right.
Definitely been a learning experience. 2 and 3 floats didn’t end up sitting as low as the first and the 3rd. doesn’t open quite as far but it does open and let’s air flow through. Should I figure out how to get them all the same or they ok just getting fuel?
I went fishing on another forum for my motor specs and got lucky. A support tech posted a diagram for me. Float height is 15mm and to adjust the metal piece on the float the needle hangs from. After my luck today I’d hate to bend it a little and it breaks. Lol
I just came in from the shop . I set the floats with little adjustment and used a vernier caliper. The diagram or the tech didn’t mention checking the seat height so I’ll go back and check. Float needles look new as did the pilot screws. I think a kit or part of a kit was installed not long ago. Probably when the seats heads got rounded which I used a small file to take the burrs off the top so they’re level just need to measure . After soaking still can’t get one of the jets to clear. Used my wife’s smallest sewing needle this time. I appreciate you taking the trouble to get the information to me. Maybe I’ll only have to buy one jet if the other two test out. Again awesome information. Thanks
