tri moto125 questions

[BigP433]

i just picked up a 83-85 tri moto 125 today for $100. its in pretty good shape, it was sitting for 3 years and still started up w/ no choke on the 2nd pull. it needs a few little things tho, i need a choke cable but cant seem to find one anywhere, are there any good sites out there for parts on this bike? also i need the seat latch. thanks a lot if someone can pint me in the right direction.

i was also pretty much just lookin for anything i should kno bout it like what kind of gear oil and the such

i took a quick shot of it when i just got home
ill put up a few more when i get some tires on it and clean it up a little bit:)

http://img52.imageshack.us/img52/3237/trike1ft.jpg (http://imageshack.us)

[kando]

Yamaha stills has choke cable for around $40, The seat latch you can get at a motorcycle wrecker. Your trike looks to be in fairly good shape, I've seen alot worse, good luck.

[Yamaha Tri-Moto]

I own a 175, lots of fun.

[Unclediezel]

Do you have the choke cable?---Is it missing or broken?---If its frozen---your in luck---Coil it up and dump it in a bucket of kerosene for a day or two----good as new----otherwise --any small piece of bicycle brake cable will do----Dont spend a ton of cash just yet---As far as starting with no choke after sitting---it has to be sooooooooo rich for that to happen--and carbs on those machines are very picky-so make sure it runs well before spending the cash . Ingenuity and a few bucks -may save you a load of money down the road.---That appears to be an 82--Look at the vin---Is it 5V6-.............?

[Unclediezel]

Damn ---Where are my manners---

:welcome: to the boards-

Those little trikes are a blast-------Enjoy!

[BigP433]

i havnt realy looked the machine over to well yet, i just picked it up around 8:30 last night. i do have the choke cable, so i guess ill be picking up some kerosene on my way home from work.

thanks for the tips guys

[BigP433]

i took a look at the VIN tonight, it does say 5v6.. that means it an 82?

im also looking into some tires right now, i want something for mud/snow. i saw the
cheng shin mud busters. are they a decent tire?

[MichiganRedneck]

bikebandit.com should help you with some parts you need. if all else fails about your choke cable, a sure redneck solution is a dime size hole drilled into the back of the airbox for some good ol' ether. :welcome:

[Unclediezel]

1982 Yt125-j

[BigP433]

what does that "j" mean? i was lookin on bikebandit.com and some parts were for a j, or a h, or a g.. i was curious to what that ment

[Unclediezel]

G=1980
H=1981
I=looks to much like a 1 so it wasnt used
J=1982
K=1983
etc-etc-etc
The 5v6 is the markings used on an 82 yt 125-- J for 1982------The YT175 from the same year used 5V7----

[BigP433]

thanks, i was curious as to what that ment. i ordered some rims and tires on monday, and cleaned up the plastics today, so as soon as its all back together ill throw some pictures up :)

[MTS]

Wouldnt the kerosean Eat the rubber coating on the cable?

[42F67N]

I have my 1982 yama 125j on ebay right now in parts ,had a,lot of good parts on it and was semi restored when the crank seal blew,but when i did have it running it was a fun lil trike if ya need any parts hit me up.

[Unclediezel]

Wouldnt the kerosean Eat the rubber coating on the cable?
After 3 months -Yes---overnight or two---Not a chance--
Just long enuff to penetrate the casing

[BigP433]

I have my 1982 yama 125j on ebay right now in parts ,had a,lot of good parts on it and was semi restored when the crank seal blew,but when i did have it running it was a fun lil trike if ya need any parts hit me up.


i was goin to bid on your rolling chassis, but i dont think my truck would make it down to you.. if it dosent sell would you be willing to sell just the forks? i like the idea of having some suspention, even if it is just the front.

on another note, i got the tires in today, and one rim.. now i just need to wait for the other 2 rims and mount them, then i should be in buisness :beer

[42F67N]

The chassis is going to sell it has bids on it,if *Edited* won the bid on the chassis and wanted to pay the shipping id take the parts off *Edited**Edited* intrested in if we worked it out in advance the shiopping prices and all.

[BigP433]

well i have a few new questions now...

i tryed running the bike today, and used a little starter fluid to start up, and quick shots to warm it up.. once it was warm it had a very irratic idle, it would slow the point of stalling, so i would save it w/ some starter fluid then it would be fine for a min. then it would shoot up and stay for a few sec, then go back to normal, and so on.

so i took of the carb to find a whole lot of gunk inside, i took it all apart and cleaned it thoroghly, put it back together, and its still doin the same thing.. if i snap the throttle real quick it will jump up and stay there for like 10sec. the last time i did it, it stayed reving VERY high so i pulled the plug wire off and it stayed ?running?.. i hit the throttle and it shut down..

needless to say its parked now, and i came inside for some advice before i start doing anything else

[Howdy]

Check for air leaks on or arround the carb, intake boot, reeds, ect. A leak here will cause it to rev up and run irratically.
Howdy

[BigP433]

might sound kinda newbish, but where and what are reeds? im pretty new to the 2stroke world.

[Unclediezel]

http://science.howstuffworks.com/two-stroke.htm engine side of the carb--- Four bolts holding the "intake manifold" to the cylinder----Behind there is a "Cage" with the reeds screwed to it----Time for a manual,since there is a gap that must be maintained on the reeds.

From personal experience, Recheck your carb----The "Pilot" Jet passage is "SUPER SMALL" and can very easily pick up junk-. High racing on these models usually indicate low fuel--(When it runs out of gas -It screams!!) so if you cant find an air leak anywhere, suspect low fuel in the bowl, or something restricting a passage in the carb----Did you fix the Choke????????

[BigP433]

no, i havnt fixed the choke yet, havnt been able to find one. i looked on bikebandit.com and found a "starter cable" that kind of looks like the choke, but i cant really tell on the microfich.

also do you kno where i can get a carb kit for this model? and would it come w/ the new jets? i just got home from my local dealer and they said they couldnt get it

[BigP433]

this is what i found on bikebandit as far as the choke, is it #7 in the picture?

http://houseofmotorcycles.bikebandit.com/partsbandit/oem_schematic_view~schem_dept_id~653631~section_de pt_id~1~section_dept_name~OEM+%28Stock%29+Parts~de pt_type_id~2~model_dept_year~1982~model_dept_mfr~Y amaha~model_dept_id~632559~model_dept_name~YT125J. asp

[Unclediezel]

Choke= Starter cable-----Yes they'e the same---as for the carb kit....

I couldnt find one either, But if you dont damage the bowl gasket , your pretty good to go---a smear of "CHAP STICK" on the gasket will keep you good to go.

The jets --any hex type Mikuni jets-------Bike bandit , hyperparts, D-k----
The only "wearable" parts are the actual float, needle/seat,and gaskets

[BigP433]

when takeing the carb apart i noticed the bowl gasket was pretty dry looking, and was hoping it wouldnt prove to be a problem, but i guess ill have to put in an order to bike bandit.

so what should i order to be safe? float, needle, and the bowl gasket?

[Unclediezel]

yep--those will suffice

Is the actual choke valve still in the carb?

[BigP433]

yea, the whole thing is complete, but i couldnt manage to free it up. plus the plastic is all cracked and crappy lookin

[BigP433]

another question a little off the carb topic.. the lights only come on when the bike is running, correct? because neither of mine are working but the bulbs are both good, is the a realy or something of the sort that could be causing that?

[Unclediezel]

nope----no light switch?-----Mine only works running also---

[BigP433]

nope.. i dont see a switch or anything, ehh.. something to worry about after its running correctly

[Unclediezel]

I put a toggle switch in the circuit-----But they always work if the bike is running, not to worry

[BigP433]

well i order a choke cable, float, needle valve and bowl gasket, i guess we'll see what happens when they get here

[BigP433]

no, the lights dont work at all, running or not.. theres no switch, nothing wrong w/ the wires from what i can see and the bulbs are good

[Unclediezel]

oh---ok--misunderstood----check the wiring and grounds----or the lighting coil in the generator

[42F67N]

You should never start a 2 stroke with starting fliud for future refrence,or try to keep it running with starting fluid.

[BigP433]

i was thumbing around online and found this pic of a carb, my question is those nipples on either side of the carb that are connected by the hose? on my bike they have nothing on them, would that also be causing some of my issues?

http://img115.imageshack.us/img115/8305/2b12qs.jpg (http://imageshack.us)

[Unclediezel]

The nipples must remain "CLEAR" , the hoses dissapear into the frame simply to keep them away from flying debris--The hoses arent "SUPER-CRITICAL" as long as the nipples are clear and un-obstructed

[BigP433]

well i got the parts inyesterday and instaled them today, it starts a lot easyer w/ the shoke, but its still reving very high on its own, and when i give it any gas more then just a quick snap of the throttle, ir bogs down and wants to die untill i let off the gas.

i installed a nev needle valve, float, and bowl gasket.

then i took off the reed cage and it was covered in carbon. after cleaning the reeds and cage i re-installed them, but there wasnt any differance in how it was running.

any more help would be appriciated

[Rm250RF900R]

spray some starting fluid around the intake like mentioned before. Could be a air leak. But I'm not a expert so dont quote me.

[BigP433]

i tryed shooting the carb and around the reed cage, but there was no change in the rpm's

[kando]

Is you air/fuel screw still in carb/ set right and also check to make sure idle screw is still there.

[BigP433]

the screws are all there, i set them to where they were beford i tore the carb apart to clean, but i dont know exectly where they are suposed to be

[Unclediezel]

Hi idle on a Yammy is typically -"SUPER-LEAN" mix------recheck the pilot passage in your carb--It is very difficult to clean it without completely taking the pilot jet out. Also make sure the slide drops all the way down with the throttle released.
there is a cable tension adjustment at the end of the metal "STALK" on top of the carb.

[BigP433]

she runs!! *Edited* were right about the piolt jet, it was all clogged up. cleand that and played with the air/fuel screw and she runs great. just in time for a little bit of freash powder too! heres a pic of it after about 3hours of rippin it around. (i forgot to put the plastic back around the headlight when i put in the choke cable)

http://img202.imageshack.us/img202/3781/hpim010528lg.jpg (http://imageshack.us)

i have more pics but its not lettin me on the site to upload them right now, ill have em up as soon as i can

[Yamaha Tri-Moto]

fun fun!! We got snow dumped on us today also.

[Cody]

Looks like a fun machine. Have fun, and be careful.

[trikes4life]

It feels great to have a running machine, isn't well worth the wate

[BigP433]

yea, it feels great to have somethin to come home to after work and ride... it ticks me off a little that i could have had it running a while ago, but i have no patiance and think of major things befor the minor, but oh well.. i guess it dosent matter now and a lesson learned.

does anyone have a wireing diagram on this bike? now that its runnin i would like to address the light issue im haveing.. thanks again to all that helped!

[BigP433]

i went to the dealer and got some new bulbs to se if that would remedy my problem. I put the new bulbs in and they worked for a few sec, then the headlight blew a few seconds later the tail light went out, the bulb dosent look blown, but it went out. Is there any kind of a voltage regulator on this bike? or what else could be blowing the bulbs that quick?

[kando]

Check your headlight bulb it should be 6v25/25w. This should be stamped on the side of the bulb. Some times they sell you a bulb made for a 125 G, your trike looks to be a 125 J. If they give you a 125 G bulb it will blow out your headlight bulb and tailight bulb will get really dim as if its burn't out.

[BigP433]

ahh.. smart guy.. its a 12 volt bulb.. looks like ill have to go back tomorrow and get the right one

[kando]

Good luck I hope that helped you. I went three years without a light cause two dealerships kept giving me the wrong bulbs even when I told them what model I had but they were too lazy to look up the bulb and just gave me what they were familiar with.

[BigP433]

well im hoping tomroow when i go back they have the right one, it took them a good 5min to find this one. oh well, ill find out in the morning.. if not theres always bikebandit, thanks again!