just put together a used 48cc engine, not sure the brand, have spark, have gas getting to carb, gas in carb bowl, but just wont start, has new pull start from guy i got it from. thanks in advance for any help.
cant get it started
- Thread starter rustyk
- Start date
You'll have better luck if you can pedal it and bump start it.
The pull rope starter would work best on a settled in, tuned up engine.
Pull the rope, the engine only gets a few turns to start. I've pedaled mine quite a ways getting it to catch before. They can be cantankerous when they're cold.
Push the tickler (primer) button and hold it in for a bit to get some gas in there.
Good luck!
The pull rope starter would work best on a settled in, tuned up engine.
Pull the rope, the engine only gets a few turns to start. I've pedaled mine quite a ways getting it to catch before. They can be cantankerous when they're cold.
Push the tickler (primer) button and hold it in for a bit to get some gas in there.
Good luck!
Also, make sure your spark plug isnt gapped too wide... it should be between .024" and .026", I've seen a few that were almost impossible to start just because the plug was gapped to .030". These ignitions arent that strong so a tighter gap can be a good thing...
Brand new or freshly rebuilt engines can also be a mother to start the first few times anyway... If ya got a nice hill to go down that makes those first few starts much easier. Once the engine has a little more time on it you'll be able to start it with 3 to 4 pulls on a cold morning.
Sometimes I cheat and use starting fluid, I do NOT recommend this, but it works if you just spray about a half second blast into the air filter then try to start it. I don't recommend because people get carried away and shoot in too much of the stuff and it's bad for the engine.
Brand new or freshly rebuilt engines can also be a mother to start the first few times anyway... If ya got a nice hill to go down that makes those first few starts much easier. Once the engine has a little more time on it you'll be able to start it with 3 to 4 pulls on a cold morning.
Sometimes I cheat and use starting fluid, I do NOT recommend this, but it works if you just spray about a half second blast into the air filter then try to start it. I don't recommend because people get carried away and shoot in too much of the stuff and it's bad for the engine.
Thanks for the tips fellas, tried again yesterday just for a minute, made sure the jet was clean, it was, still wont start. made one little pop and a little blue smoke came out the back of the carb through the air filter. gave up, my brothers coming home from work in 2 days, hes a mechanic and will check it out. Love this site and appreciate the help
Check your magnet too.
The slot must be at 1o'clock position when TDC.
it can be put on backwards and still give spark, but timing will ed way out.
The slot must be at 1o'clock position when TDC.
it can be put on backwards and still give spark, but timing will ed way out.
got a chance to take pull start off today, found that there was no shaft key between the magnet and the shaft, must be the problem, gonna look for one tomorrow or order one. thats got to be the problem, or at least a problem, thanks again
It's in a slot in the end of the crankshaft. There is a corresponding slot in the magnet. The key keeps things lined up by preventing the magnet from rotating on the end of the crankshaft.
It is actually called a woodruff key.
https://en.wikipedia.org/wiki/Key_(engineering)
It is actually called a woodruff key.
https://en.wikipedia.org/wiki/Key_(engineering)
Fired it up today. Bought a 40 cent key, had to sand it a little to fit, got it back together, pulled the rope to make sure everything was lined up as i was screwing the pull starter on and it made some noise. I screwed it on tight and turned on the gas and it started on the first pull! I was jacked up. Put the chain on it and noticed it was catching on the motor somewhere. I'll have to look at it tomorrow, had to go to work. thanks for all the assistance.
If the chain is "catching on the motor somewhere" there's a good chance your sprocket alignment is way off. Engine angle in the frame can cause this problem too. Tilted too far forward or back or if the engine isn't straight in the frame the chain might hit.
Could you provide us with a photo of the engine installation?
Tom
Could you provide us with a photo of the engine installation?
Tom
sorry, dont have a smart phone, dont even have the internet at home. live in the country, on the internet at work. Took the sprocket off and filed it down a little, was still catching. Put the old chain back on and turns smooth, but its too short now, i jacked it up getting it off. Brand new chain i had is a little too big. Whats the smaller chain size that works? Dont really know the difference yet. I'm pretty sure i have it mounted properly though.
Its not actually catching on the motor, it doesn't seem to sit down properly on the sprocket, i had a screw stuck bad and finally got the cover off to see. guess ill have to order a new chain, but motor seems to be running ok, just cant ride yet, sucks.
There are a lot of us who prefer to use #41 chain. Look for an industrial supplier near you and even some Ace hardware stores carry #41 chain, master and half links.
I think you'll be happy with it. Ball park price is about $20.00 for a ten foot length.
Tom
I think you'll be happy with it. Ball park price is about $20.00 for a ten foot length.
Tom
Best chain i have found so far is the drive chain on my old stanley garage door opener. Fits sprockets and is tough as nails.
Got the 41 chain from tractor supply, works great. Got chain put on, lined up just right, sprocket doesnt turn. Somethings wrong with the clutch i guess. Took the cover off and need to figure how to take the clutch off. Clutch spins when giving it gas but wheel doesnt turn.
