1st build wont work help:(

First of all you will get more help on this in the DIY section thats were all the home builders hang out. That said, The bell looking thing confuses me. Is that the centrifugal clutch or the flywheel. The flywheel looks like a fan but it is at the motor end of the drive shaft not the fan used to blow leaves.

Not sure if there is a centrifugal clutch on the leaf blower but if there is then when it fell off there should be some parts held on with springs. Let me know which and I might can give you some idea.

How did you have the peg attached by the way.

hey thanx for the reply im useing a different account because my other one stuffed up.

ok it does look like a fan i think it is the fly wheel
that means its a uselss motor now right?

i attached the bmx peg on the spindle because it had a thread on it.

if you have the fly wheel try to see how it was held in place. There might have been a slot in the drive shaft and a key that held it in place. The again it might have been held in place by the thing you took off to put the peg on. In other words the peg might be what was holding it on. there should be a pin or key to line it up though. that might have been left out a the factory or it might have fallen out.

When it moved is why you couldnt start the engine. the fly wheel has a magnet in it that generates the spark as it pass the magneto coil. That has to happen at exactly the right time. Thats why there is usually a way to line it up.

Let us know what you find.

i concur. the peg might be coming loose because the rotation direction loosens the thread.

You need to be able to raise the engine from the tire to start it best. Those small engine start like this.

1. full choke till it tires to fire.
2. `1/2 choke till it runs a little
3. no choke to ride it.

If you can raise the engine off the tire put it on full choke... wrap a rope around it. (the pull cord from the recoil starter will do fine.) Be sure to wrap it so that you turn the peg in the direction you want it to run. When it tries to start move the choke to half choke and pull it till it starts. Quickly move it to no choke. throttle it a bit to warm it up drop it to the tire and off you go.

Locktite on the threads of the spindle should keep it in place. Most of these small engines run backwards or counter clockwise. They will run clockwise but as mentioned it will loosen the peg. You may be trying to run it backwards. It should turn counter clockwise. Which will put your engine on the left side (as you sit on it) of the front wheel.

If you have your bike set so that the engine is on the left side where it belongs and it is tied down so that it can not be raised try this to drag start it by pedaling. Set the choke on full... pedal it till yo hear it try to start... then set it on half and pedal again.... then turn the choke off and ride it. You don't want to run it on half choke even though it is easy to forget to set it to open. It runs like crap and over heats.

Good luck Also if it will not start you might have the flywheel on out of adjustment so check that the first time. the spark from the magneto has to be delivered at the right time. It the flywheel is on 180 degrees out of alignment which it sounds like it could be then it will not try to fire at all.

About those groves... If there is a grove in the drive shaft and a grove in the flywheel then there should be a key that slips between them and holds it in place.... If there is a grove in one and a nipple on the other then you are good to go... If you need a key any lawnmower repair shop should have one.

If you use a rope, get a pal to lift the bike off the ground for you so that the wheel can spin. If you want to start it by pushing, same thing, get a pal to push you and start it as you would any motor. Give it choke until it fires up, play with the throttle and let off on the choke when it sounds like it will stay running.
i have the feeling , as mentioned above, that the nut comes loose because of the direction the motor is turning. You MAY want to hammer the shaft to mushroom it out so that that nut will never come off again or if there is room , put another nut on and tighten them up on each other. If it's a bolt, forget my last suggestion.

I believe that you need a key to hold that flywheel in place.

It will start fine that way but let me caution you do NOT run out of gas. I had my first weedwhacker set up like that on the rear and when it ran out of gas I was on a hill and didn't realize that I was pulling an engine with no oil. Your only lubricant is in the gasoline. If you do run out stop immediately and cut the engine loose from its mount so that it won't turn as you roll the bike. Even if you push th ebike home if you turn the drive spindle you are running the motor with no oil it wont take long to seize.

Check with an engine repair show about that key for the fly wheel It might have been left out at the factory or you might have sheered it off. All kinds of things can happen. I had one do that but mine broke when it hit the pavement. If I still had my weed whacker collection I would try to find you a key but alas they have gone to the trash.

You are going to need that key to make the engine run.... Some of the guys here have used a dremel and a piece of scrap to make keys.

If you look around you might find it where the spindle came off if it was in the shop. If not try to buy or make one.

Sorry I can't put you riding today.

I believe that you need a key to hold that flywheel in place.

It will start fine that way but let me caution you do NOT run out of gas. I had my first weedwhacker set up like that on the rear and when it ran out of gas I was on a hill and didn't realize that I was pulling an engine with no oil. Your only lubricant is in the gasoline. If you do run out stop immediately and cut the engine loose from its mount so that it won't turn as you roll the bike. Even if you push th ebike home if you turn the drive spindle you are running the motor with no oil it wont take long to seize.

Check with an engine repair show about that key for the fly wheel It might have been left out at the factory or you might have sheered it off. All kinds of things can happen. I had one do that but mine broke when it hit the pavement. If I still had my weed whacker collection I would try to find you a key but alas they have gone to the trash.

You are going to need that key to make the engine run.... Some of the guys here have used a dremel and a piece of scrap to make keys.

I wouldn't even try a rope unless I could lift the motor. You might try blocking it up to get the wheel off the ground and pedal it to start while sitting in the shop. that would be easier than riding down the road but both are doable set up as you are.

Weld a 3/4 nut in the end of your drive roller and start it with your drill.HD

good idea Doc

make sure you put on the bmx peg on good with a welder or an oxyacetaline torch and just weld them on or braze them on either way make sure they dont fall of again it could cause some accidents