please help!! I wanna buy this bike&engine tommrrow !!

[mikeab13]

Hey guys I've been searching for motors an bikes online but money has been super tight lately. So the bicycle gods have sent me a blessing.http://fortmyers.craigslist.org/lee/bik/5002476051.html


So my question is , do you think the connection from the tank to the motor is the fuel line?? Oror is their something else? My plan is to rebuild the motor an replace all gaskets an bearings. Piston if need be an then port n polish everything. Do you think this is a good deal?? Please reply soon as imma get up early b4 work to check it out an hopefully pick it up. I also think I'll be able to talk him down to like 80 cents it doesn't run

 

[Moto]

do it - looks like a 50cc engine to me. personally dig them more than the 80s because they have so much less vibration and higher rpms. It looks like the fuel line is off so that would be the problem he is talking about. It does look pretty high milage but not necessarily a bad thing. a tip: check out the rear wheel before you buy - make sure its true and has no broken spokes, and check for play in the rear axle. GL!

 

[mikeab13]

Thanks moto! I'm excited. Thought it was gonna be another month or to b4 I got my first motor. Things have a way of working out I guess. I will check for wheel trueness an spokes.

 

[bluegoatwoods]

Yup. He seems to be saying that all it needs is a fuel line. Something you can get for $5 at an auto parts store. But I wonder why he doesn't just do it so that he can advertise a running bike? That's a bit suspicious.

 

[crassius]

I'd guess that it is the petcock that he refers to as being needed. I'd probably buy it & add a front brake, but I certainly wouldn't do any work on an engine that may have a lot of miles on it.

Get it running & use it while putting your efforts into preparing a new engine for use later, you'll have a lot to learn about these before getting ahead of yourself with building motors.

 

[mikeab13]

These are pics of gas tank connection an back sprocket ? Is it broken ? Also paid 50 not 100

 

[mikeab13]

Is this normal for throttle arm that it comes out??

 

[mikeab13]

Here is other pics of engine. What should I do first. The back tire does not spin with clutch engaged.

 

[mikeab13]

pictures of used engine. need help on what to do first

Some more pics

 

[Agreen]

Re: pleas help me change thread title an look at my used engine

Can't change the title of a thread. Maybe a mod can do that, but it's usually best to start a new thread for a new topic. That way you will get more views and thus more help.

Also, I'd recommend re-reading what you write at least once before posting it. I'm not trying to be a dick here, I'm trying to help you get the most help you can. That ^ is really hard to understand unless you read it several times over. Most people won't have the patience for that.

Here's a good video to watch:

http://www.youtube.com/watch?v=FSHkKZArN-Y

It gives a good breakdown of how the engine is assembled.

That being said, the "throttle arm" you're referring to is actually the clutch arm. And it should not come out like that. I'm going to assume it's broken or possibly installed wrong. (Most likely broken though)

The fuel shutoff valve is broken, so you'll need to order a new one. You may get lucky at a small engine shop, but that's unlikely. So it's not "just a fuel line" like the guy said.

Now, for something temporary, you may be able to get a threaded barb fitting from a hardware store or auto parts store to use, but you will NEED to get a shutoff valve in that line. Otherwise, you can flood the carb and spill fuel everywhere overnight.

Change the spark plug too. There are several replacement spark plugs available at auto parts stores.

Good luck! I doubt it'll take much to get it running right, and it does sound like you got a decent deal on it.

 

[Agreen]

Re: pleas help me change thread title an look at my used engine

Actually...
Now that I think about it, you may be missing either the ball or pushrod for the clutch. You'll see what I !mean in the video.

 

[fatdaddy]

Is this normal for throttle arm that it comes out??

That's NOT the throttle, Its the clutch arm, and yes, if ya turn it it will come out, put some grease on it and put it back in. I'll try to get to the rest of your questions soon.
fatdaddy.

 

[fatdaddy]

These are pics of gas tank connection an back sprocket ? Is it broken ? Also paid 50 not 100

The petcock should screw into the hole in the bottom of the tank. I cant really tell if the petcock is broken or not. Looks like you have the petcock, filter and fuel line so just hook it up bro.
fatdaddy.

 

[fatdaddy]

Here is other pics of engine. What should I do first. The back tire does not spin with clutch engaged.

The back tire is attached to the engine through the clutch assembly. you can push the bike and turn the engine over, THATS how you start it. Try holding in the clutch and rolling the bike. ya gotta put the clutch arm back together first. Carefull not to lose the bearing behind the bucking bar. I can tell its gonna be harder to help you until you get to know part names.

 

[2door]

I'm not sure where to start. And I'm not sure you got a good deal. You're going to need to do some work to get this bike on the road.

The fuel petcock is broken. You'll have to replace it. They are available from most engine kit suppliers. While you're doing that flip the fuel filter around. It is installed backwards. I'd suggest replacing it with a new one. At the very least use compressed air and blow it out before reinstalling it.

Get rid of the small spring on the clutch cable. The one that is about 1/4" diameter. It serves no purpose but to make the clutch harder to pull.

The clutch actuator arm (cam) is held in the cast aluminum cover by a steel pin. The arm and cam shouldn't come out unless you rotate it 180 degrees. The pin that holds it is is about 3/32" diameter. Some were glued in at the factory, some were installed then peened in place. The glue can fail and allow the pin to fall out which allows the arm and cam to lift out of the engine.

The exhaust manifold gasket is leaking and possibly the cylinder head gasket as well.

Judging from the quality of the build I'd suggest you carefully check everything, especially the engine mounting fasteners, the intake manifold gasket, the rear sprocket attachment, chain tension and alignment.

Sorry. But what I see is a very poorly built motorized bicycle, put together by someone who didn't have a firm grasp of mechanics. It also looks, from your photos, as if it has been ridden hard and maybe abused.

You have your work cut out for you but it will certainly be a learning experience. We'll be here to help you through the process. Just ask for help and advice when you need it and use our search feature to answer some of your questions.

Tom

 

[Trey]

mikeab13- So you got one, nice! That there is whatcha call a fixer upper buddy
My first bike came assembled and used as well. Even though I'm no kind of expert, having to learn to fix assembly mistakes, learn what parts you SHOULD have compared to what parts you DO have, and the extra time/ work involved in getting it safe, is a benefit. It makes you learn a little more than you would need to, just installing a kit.
Everything I know about these machines I learned here. In fact, some of the same people who shared their knowledge with me are helping you now. (This is the coolest place.)
Grab the bull by the horns! Use the heck out of the search bar up top, almost anything you need to know is here already. Don't be afraid to ask questions, everyone will help when they see you trying. Typing clearly will help too, people are like you and me, they got other stuff to do, so make it easy for em.
This is a great opportunity for you. Stick with it, you're gonna learn alot, and get a motorbike outta the deal.

Congratulations on finding a bike. Good luck!

Trey




PS Have you signed up on the member map yet?

 

[Agreen]

You also need an air filter. Looks like the one pictured below.

Also, I went out and measured a spare tank to see what size pipe fitting is used. If you go to an ACE hardware or TruValue store, ask for a 1/8" BSP barb fitting. That's the right size for your tank. They should also have a lawnmower section that will have a shutoff valve. Put the valve in line to the carb and you should be fixed right up!

Degrease the engine. Now that I think about it, that's where you should start! That way, once you get it running you'll know where all the leaks are.

You may also want to pull the cylinder head and take a look at the condition of the cylinder walls with the piston at BDC (bottom dead center). I will also say that I have used copper RTV as a head gasket, and it worked like a champ.

Again, good luck!

 

[bluegoatwoods]

It looks to me as though that rear sprocket is installed wrong. 2Door and fatdaddy certainly appear to be correct in thinking that that was built by someone who didn't know what they were doing and didn't care a whole lot. But that's not the end of the world. You can get fifty bucks worth of value out of that machine. Be warned, though. You're not likely to be riding that within, say, a couple of days. This bike is going to be your learning experience.

The 'search' box at the top of these pages can be very helpful. I typed in 'clutch actuator'. This is what I got: http://www.google.com/cse?cx=partne...15#gsc.tab=0&gsc.q=clutch actuator&gsc.page=1

This is what I got for 'rear sprocket': http://www.google.com/cse?cx=partne...3502j1840592j15#gsc.tab=0&gsc.q=rear sprocket

You'll learn great things looking over those pages. You'll find other things to look up as you fix up that bike.

 

[fatdaddy]

Re: pleas help me change thread title an look at my used engine

Actually...
Now that I think about it, you may be missing either the ball or pushrod for the clutch. You'll see what I !mean in the video.

I know what you mean, but if the guy is gonna learn about MB's, lets start by using the proper names ourselves. The clutch "pushrod" is a bucking bar. And the "ball" is the bucking bar bearing. But yer right, he's gonna need those. I hope he didn't lose them taking it apart like that. I don't understand why he took off the clutch cover in the first place, THEN he thought it was the throttle or something. The Bro has A LOT TO LEARN. Let's just try to help him through it. SO, I think he should just put it back together and check for spark. then go from there. But of course he should really check every nut and bolt on it for snug.
fatdaddy.

 

[fatdaddy]

It looks to me as though that rear sprocket is installed wrong. 2Door and fatdaddy certainly appear to be correct in thinking that that was built by someone who didn't know what they were doing and didn't care a whole lot. But that's not the end of the world. You can get fifty bucks worth of value out of that machine. Be warned, though. You're not likely to be riding that within, say, a couple of days. This bike is going to be your learning experience.

The 'search' box at the top of these pages can be very helpful. I typed in 'clutch actuator'. This is what I got: http://www.google.com/cse?cx=partne...15#gsc.tab=0&gsc.q=clutch actuator&gsc.page=1

This is what I got for 'rear sprocket': http://www.google.com/cse?cx=partne...3502j1840592j15#gsc.tab=0&gsc.q=rear sprocket

You'll learn great things looking over those pages. You'll find other things to look up as you fix up that bike.

What do ya want for $50 bucks now days. Even if all the parts are installed wrong, It looks like all the parts are there And I would have bought it for $50 Any day.
fatdaddy.