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Hi, me and my friend were out and riding the other day and filmed some so I tried to do an edit from the videos that I got. So this is my first ATV edit and I need you guys to tell me what I can improve in my filming and editing. Please give rewarding comments!
1983 Yamaha YT175
Fired up for the first time after total rebuild. Now I have no idea whats going on. Compression is 120, new plug, new fuel and oil lines, new choke and fresh fuel. Carb cleaned and reeds are good (no gaps).
Will not start without choke and stalls out when choke is off. Played with choke adjustment and doesn't change.
It fires up first pull and only idles if I play with idle screw. As soon as I touch throttle, it goes bezerk on me and I have to shut it down as you can see in video .......
You can here the recoil lever tinging in the video. I lost the spring. D"oh!!
So far I have swapped ignition coil, spark plug, CDI with no change. I have removed flywheel to check keyway and it is where it should be.
Checked resistance on stator ... I get 10ohms +/- 10% on pickup coil within specs as per manual and I get 273ohms on charge coil. Manual states 300ohms +/- 10%, so that is also within spec.
I have also swapped out jet needle and played around with different settings. Eventually I put it back to the 3rd line.
The engine already has new seals and bearing so I am completely baffled as to what I am missing here.
Any and all suggestions will be appreciated.
I have also swapped carbs from a running YT175. Same results.
Do the small 50cc's have a way to set the speed. Im wanting to get one for my kid and i need to set it to go slow. I know the chinese knock off fourwheelers do but i dont really want one of those
Backstory: ATV Ran fine, once stopped in the forest and had to be towed back to my workshop. Found that the stator connector was melted together. Fixed that and it ran mostly fine but intermittently lost spark. Changed CDI box which fixed that problem. Ran fine for a year, but started to misfire more and more often until it did that most of the time. It's not really losing spark, it's firing when it's not supposed to, occasionally making the engine kick in the wrong direction if the revs are low enough. I found that disconnecting the charge regulator would make the problem disappear. I measured the regulator, one diode seemed bad so I got a new one. No change. I then bought another new CDI box and changed the stator and ignition sensor as well as the ignition coil to make sure everything in the ignition circuit was new.
And now, it's still doing it. I'm leaning to a broken cable/connector somewhere but it seems illogical to me that it would spark when not supposed to if it were that. Any suggestions is very much appreciated!
I just added a 1999 Honda 300 Trx FW to my problems.
Indicator lights work, has spark, carb been cleaned, valves set. Cranks - no start. Is there any way to check the timing chain without pulling the valve cover and looking at the marks on the timing gear.
The timing chain is behind EVERYTHING in the right case.
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