New here with some questions

[call_this]

Hi everyone! I'm new to the club and pretty new with three wheelers. I have 2 yamahas and a rebuilt Honda 4 Stroke.

I have a few questions about the Yamahas.
They are both 2 stroke motors, 5 speed. Besides the frame size they both appear to be identicle but one is a hell of a lot more powerful than the other. Both have rubbed off stickers behind the head light so I cannot identify the year and model. The powerful one I am assuming is a 175 1980-1981. The other is likely a 123 Trimoto 1983.

My main question is how does the automatic Oil injection work? One of the trikes is fully setup with the tank and vaccuum lines and works great. The trimoto ont he other hand doesnt have a tank or vac lines. Is it as simple as hooking up the hoses and adding the tank to make this work? I noticed on the working one it has a cable coming out of the bottom end and is attached into the throttle cable. There is a "Big Mushy Lump" of something where the cables connect and I am afraid to take it apart and look inside since it's already working. The cable on the other trike has been removed. Does anyone have an understanding of the OIL injection systen? Does it also lube the Bottom end?

Since one trike is currently operating without Auto Oil option, what is the proper mix ratio? And should I be buying a higher octane gas than regular?

Nice to meet you all and thanks in Advance

[Lukeatc185]

to be honest its better to unhook the other one and run premix, if you go on a ride and it stops working. you will most likely ruin your top end.

[Lord Letto 20]

Welcome to the Boards, i would like to help but i don't really know much about 2 strokes or Yamaha Trikes. i see you are from Ontario also, There is a Ride going on on the weekend of the 22/23 if you get something Working and is Interested, This is the Link to The Ride: http://www.3wheelerworldforums.com/s...d.php?t=100716

[Vealmonkey]

Firstly, 1 175 would be 1982-1983. You need to look at the vin numbers on the engine and find out what they are, it can make a difference if you ever have to do repairs or replace parts. Secondly pics would be a big help. But if you are running one of those trikes without any kind of premix, whether it is from the injection tank or wether you are adding directly to the gas, could explain a good portion of your performance problem. Engines need lubrication to work well. And it would really be hard to say if you could just hook up another tank and some lines and wether the oil injection pump is working properly. Who knows if the previous owner just cracked the plastic oil tank or if the oil pump is working? The trike that does not have the oil tank on it and the lines disconnected, a problem could be that it is sucking air from the lines not being hooked up and that can cause it to run funky also. It won't hurt to add your premix to your gas like a weed whacher, but you need to plug of the line heading into your carb so it doesn't create a "lean" condition. You need to get those trikes cleaned up nice, check your vin numbers and get them running properly. You've come to the right place. Welcome to the boards. Do a "search" there have been many posts on the topic of running the yamaha 2 stroke trikes with and without oil tanks. But fix it soon and save yourself alot of future headachs and repair bills.

[Threes company]

Looks like you're in good hands with VealMonkey......... so I'll just say welcome to the club bro!

[old-yellow]

welcome to the boards, as for the oil injection just do like veal said and block of the oil injection and run premix.

[call_this]

Wow you guys are an active bunch. The one I am running Premix I actually compared to the one with Auto Oil and Plugged off all the lines that arent being used anymore. I understand Fuel/Air Ratio very well as I am Also part of the Shelby Turbo Dodge Club and in order to run a Turbo car you need to understand Fuel/Air. Both Trikes actually perform rather well. The engines Look exactly the same on the outside but I think one is actually bigger. They both wind up and run nice but one is much more powerful than the other, hence the reason I think one is a 175 and the other is a 123. It's a little dark right now to find stamped VIN numbers right now but where on the engine should I be looking for the stamp. I took the headlight off both to try and read the sticker under the handle bars but both are not legible. I wasnt aware there was an oil pump down there. I assumed the Oil feed was produced entirely by vaccuum from the carb. So the cable coming out of the bottom end is controlling the Oil Pump?

What is the proper mix for a 2 stroke engine?

Like you said, not lubeing up my engine can cause lots of problems and lack of performance. Is the engine lubed entirely by my fuel mix? The one with Oil Injection the lines run down into the bottom end and come back out into the carb, is that lubeing my bottom end? I've changed the trans lube but how about the bottom end of the Engine? I'll try and Get pics up soon and any direction as to where I can find the VIN number on my engines and how to interpret them would be great! I'm a 2 stroke N00b :P
Thanks for your help

[call_this]

found this link. Oil Mix solved

http://www.3wheelerworldforums.com/s...troke+fuel+mix

[old-yellow]

Yes the engine is lubed entirely by the fuel mix so that means the cylinder, piston and lower end, the cable coming out of the bottom end is for the oil pump, as for the Vin's they are on the back right side of the engine. the lines running down into the bottom end are running to the oil pump and are not lubing the bottom end. I hope this helps

[call_this]

It does and thank you.

So if I were to convert this trike to premix fuel is it as simple as removing the tank and lines and plugging the oil feed line to the carb? Or do I have have to actually take it apart and remove the pump and cable?

The vin numbers are as follows

Tri Moto - 3x3-017936
Yamaha (unknown) - 5v7-003250
Honda - atc112-201501B

How do I read this VIN numbers to find out what these trikes are all about? The Honda one is pretty meaningless since It has been totally reconstructed to a 200cc 4 stroke. I have absolutly no problems with this trike, it pretty well maintains itself. However I would liek to know how to read the yamaha numbers.

[MonroeMike]

Honda - atc112-201501B

How do I read this VIN numbers to find out what these trikes are all about? The Honda one is pretty meaningless since It has been totally reconstructed to a 200cc 4 stroke. I have absolutly no problems with this trike, it pretty well maintains itself. However I would liek to know how to read the yamaha numbers.

Honda makes 200cc 4 stroke ATC's. What makes you think it been "reconstructed"?

If you post some pics, that would help identify the years.

[AutoXer]

saying that the pre mix entirely lubes the motor isn't really true .... there is oil in the transmission and the bearings in the lower-end are sealed bearings ... Welcome to the boards

[call_this]

Honda makes 200cc 4 stroke ATC's. What makes you think it been "reconstructed"?

If you post some pics, that would help identify the years.

Because I bought a new engine with trans. The original was a 110cc 2 stroke pull start and I bought a 200cc 4 stroke elec start with reverse.

I'll get pics as soon as it stops storming outside.

I replaced Oil in both Yamahas trans upon purchasing. The Honda is not of my concern, it rides like a harley

[MonroeMike]

Oh...I thought you bought it that way and didn't know what you had.

[call_this]

some pictures

First two are the unknown Yamaha
3rd and 4th are the yamaha Tri Moto with missing Automatic Oil
5th one is the Honda with the unworthy polaris 4 wheeled machine

hope this works the way I planned it too lol.