View Full Version : 1984 yamaha trimoto 125
what are the carb adjustments and i got one one other question when i have it idling in neutral and i kick it into first it stalls or the front end flys up into the air doing a wheely and then stalls
Vealmonkey
05-07-2008, 10:56 PM
It sounds like you may need to adjust your clutch. Even though you don't have a clutch lever, the trike still has a clutch pack assembly, it is actuated whenever you shift up or down. The carb adjustments are going to depend on where you are and what state of tune your trike is in.
ok how do i adjust it? and what are the factory adjustments
Vealmonkey
05-08-2008, 02:12 AM
Ok, it's been awhile but here goes. On the right side of the engine, there is a cover with several bolts in it, remove the bolts and remover the cover. Have a small pan under there in case any engine oil leaks out. Inside that cover, you will see the clutch assembly and it should have a locknut and a stud with a slot for a straight screwdriver. Find the right size wrench for the nut, and while holding the stud with the striaght screwdriver, loosen the lock nut up fairly well. Once the lock nut is loose you have to gently turn the slotted stud in clockwise. I know for the hondas, you turn the stud in until it bottoms out and then back off 1\4 turn, but I think I had to adjust the yt125 clutch a couple times to get it right as it didn't seem that the stud bottomed out. Try turning the stud in one complete revolution at a time and then tighten the lock nut back up, now you just want it nice and snug, you're not trying to hold the whole engine together with this nut. Try putting the cover back on with half the bolts and see if it helps when you shift it into gear. Like I said I had to adjust it 2 or 3 times. I don't have the factory yt125 manual here, but I do have a haynes manual, which is pretty crappy I must say and I can check for the initial carb settings, but the initial setting might not even be close for your area. You really need to have a nice fresh plug in, and a nice clean airfilter and no airleaks between the carb and the engine or the carb and the aircleaner. If you don't have an aircleaner, it will affect how your carb tuning goes, like it could make it damn near impossible to tune the carb. There are alot of things that can affect carb tuning and I have no idea what kind of shape your trike is in. But we can try if you want, it will probably be a long process though. Have fun learning about working on your trike and I would highly recommend getting a yamaha shop manual for your year trike. I have a 1980 yt125 and it's a little different from your 1984.
ok i started looking at adjusting the clutch and theres a screw out plug and i opened it and it was dry inside should there be oil on there and is that my issue??? and also wuts the best way to clean an air filter
do i have to have 100 post before people reply or what?????????????????????????
trimoto.125
05-16-2008, 10:42 PM
Yep there is supposed to be oil in there, the trimoto's are know for having the crank seals go on them every so often.The oil then gets sucked up from the bottom end and gets burn't off. This just happened to me 2 weeks ago.
Wash the filter with warm soapy water and let it dry off Completely and then put some oil on it and put it back on....good to go.
ok i started looking at adjusting the clutch and theres a screw out plug and i opened it and it was dry inside should there be oil on there and is that my issue???
do i have to have 100 post before people reply or what?????????????????????????
chill out homeboy....you may be new here but that dosnt matter, its the fact that you have a machine that not everyone here owns. With certain machines you have to be patient on respons's.
Also, im just going to put this out there, you may havnt noticed yet, but there is a search feature here, im sure you wil find what you want.
:welcome:
.
yeah i have tried using the search but havent found anthing i started looking at adjusting the clutch and theres a screw out plug and i opened it and it was dry inside should there be oil on there and is that my issue???
hey i need to no the question^^^^ today is the only day i have to work on it
trimoto.125
05-17-2008, 05:56 PM
Yes there is supposed to be oil in there. The purpose of the oil in there is to keep the clutch and gears cool and lubed.
Vealmonkey
05-17-2008, 06:13 PM
Hey man, I just got back from vacation. I got no idea what plug you have pulled out. I explained above how to adjust the clutch to the best of my ability. Buy a manual. It explains the adjustment procedure and has pictures. If that doesn't help, then I don't know what to tell you. I guess patience isn't something taught in school. My life is not to wait around and try to answer your questions. I can see why no one has replied to help you. I wish you all the luck in the world getting your trike running. Give the people a break on here who are trying to help you. No one tries posting several times asking you the same stupid questions just cause you're in school or working and not posting immediately after someone writes you.
Yes there is supposed to be oil in there. The purpose of the oil in there is to keep the clutch and gears cool and lubed.
ok cause i cant see any what kind of oil should i put in and how much
Vealmonkey
05-17-2008, 10:18 PM
adam, did you take the plate off with the nuts that hold that cover on? That plug is just a fill hole for oil. If you haven't taken the plate off, then you haven't adjusted the clutch because the clutch and adjustment is behind that plate. Also with the plate off, the oil is added to just below the open area where the plate attaches. You should be able to remove the plate with oil in that casing without it coming out, if you get oil out when you remove that plate, then you have too much oil. I'll try and get my shop manual and owners manual and give you specific amounts this week, just make sure the oil is up to and slightly over the bottom of the clutch plates but not enough to come out of the open hole left by the plate. I hope you understand the description I just gave you.
alright well it ended up not needing to be adjusted so opened the black screw in plug in the case i would have to take off to adjust it and theres no oil
Vealmonkey
05-18-2008, 09:35 AM
I'm not sure what black screw in plug that you are referring to? You have to be more specific. I don't have my 125 here at the house to try and figure out what you are talking about so it makes it a little harder to understand.
alright ill try to get some pics up later but the piece i would have to take off to adjust its in there it screws in and when i open it i can see the screw thing u told me adjust i dont know if this gonna help
Vealmonkey
05-18-2008, 02:25 PM
No, that's not helping. How did you figure out your clutch doesn't need adjusting without adjusting it?
i figured out it didnt it was all carberation i was just driving it
http://i153.photobucket.com/albums/s223/adammyers_5/101_4402.jpg
http://i153.photobucket.com/albums/s223/adammyers_5/101_4403.jpg
Vealmonkey
05-19-2008, 12:23 AM
ok, it makes sense now and thanks for the pictures. The screw in plug is an oil fill spot. The plate that screws into is not supposed to have oil all the way up to the screw in plug. The oil only comes up to just below that plate. You should be able to remove that plate without oil leaking out so you can adjust your clutch. Your clutch pack and the clutch adjusting nut is behind that plate that the black plug screws into. There is an oil drain and there is a specific amount of oil that you are supposed to add. I will get the manual and let you know what it is. If you have oil all the way up to that plug, then you have problems and the trike won't run right and there really is no dipstick.
ok so should i pull that plate to see if theres to much oil in there
Vealmonkey
05-19-2008, 04:32 AM
Yes, pull the plate and check for oil. Also adjust the clutch while you're in there, it will be one less thing to worry about.
alright will do what kind of oil should be in there and what type of oil do i use to oil the air filter
Vealmonkey
05-22-2008, 01:31 PM
Ok, on the right side clutch cover in front of and to the bottom of the plate that bolts on that has the oil fill on it, there is a lonely bolt all by itself. If you pull that bolt, and have a rag or catch pan underneath, that is the level that the engine oil should be at. The engine oil is 10w30. I wouldn't recommend synthetic as alot of times the synthetic will cause the clutch fibers to slip too much and the trike won't move forward. Make sure the engine oil is filled up to the hole so just a little oil comes up and that is the correct operating oil level. Then put the bolt back in. Make sure it is snug but don't strip it out while tightening it up. Hope that helps.
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