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Post by captonzap on May 2, 2013 22:34:55 GMT -5
You did not say how long it has been sitting since it last ran. If it was more than a month or two, there is a possibility that the carb has some gooped gas in the idle circuit. Take the idle mix screw out, and squirt some carb cleaner in the hole, using the plastic tube that came with the cleaner. Watch and see if the fluid comes out the REAL tiny holes in the throat, where the butterfly is when the throttle is closed. If it does, reinstall the screw, back it out from a LIGHTLY seated position about 2 turns, and try it. If the carb is clean, it will start. Adjust the idle mix from there, after the engine warms up.
CZ
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Post by captonzap on Apr 18, 2013 10:35:49 GMT -5
There are two big terminals on the solenoid. One has a wire from the positive (+, red) battery terminal, the other has a wire that goes to the starter. Hook both of those up. Anything happen, sparks, melted wire with smoke? No? Good! Disconnect the small wires from the harness Now take your meter, set it on 200 ohms, (the horse shoe shaped character with flat feet on the open end of the horse shoe means ohm), put one lead on the negative (-) battery post, and the other lead on one of the small wires of the solenoid. Nothing should change on the meter reading. Try the other small lead. Still nothing? Good. If either of those readings change, get another solenoid Now take the two meter leads, and put them on the two small solenoid leads, Still on 200 ohms, you should get a reading of more than 5 ohms. (I don't remember the number, 25 seems about right, if memory serves. I will check mine later today and give you a definite number tonight). If it is less than 5, get a new solenoid. If it is more, take two jumper wires and take the two small solenoid leads and hook them to the two battery terminals. The starter should turn the engine over. In which case, the fuse blowing short is someplace else in the system. But first things first. Check this, and we'll go from there. CZ
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Post by captonzap on Apr 17, 2013 19:18:19 GMT -5
It's kind of hard to tell from the picture, but is the hole in the center a hex shape for an Allen wrench? How did the factory adjust the screw?
CZ
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Post by captonzap on Apr 15, 2013 23:10:49 GMT -5
[replyingto=yelloscoot]yelloscoot[/replyingto]I don't know what your wiring scheme is, but on all the schematics I have seen, the current for the starter does NOT go through the fuse. Only the current for the starter solenoid coil is in the fused circuit. Measure the resistance through the solenoid coil, and also measure to see if there is any continuity from either of the coil leads to ground. Most faults that will blow a fuse are pretty easy to find with an ohm meter and a wiring diagram. CZ
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Post by captonzap on Apr 15, 2013 19:16:35 GMT -5
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Post by captonzap on Apr 15, 2013 19:07:13 GMT -5
I recently bought a neglected Blacktiger TH 50QT-3C scooter, and am in in process of getting it running. Has anyone heard of this brand? The VIN says it is a 2004 model, made by Shanghai Meitian MC Co. I really need a wiring diagram, specific to this model, since there seems to be some discrepancy between this wiring and the generic diagrams available on the web. Do the head lights operate at all times? Is there supposed a resistor in the lighting circuit? On another subject, what does the TH and -3C in the model number indicate? Thanks for any info that anyone can provide. CZ
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