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Post by thxcuz on Aug 18, 2017 13:27:32 GMT -5
acquired a qt50 recently without a headlamp installed. The bike has no spark. Is the lack of a connection at the headlamp the culprit?
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Post by gsx600racer on Aug 18, 2017 13:59:37 GMT -5
The Yamahopper(QT50) has a funky ignition system. The one I worked on needed the battery installed to run. You turn the key to start position and that does something with the spark(timing or makes the spark stronger). With the key in this position the engine will start and not rev up fully till you turn the key to the run position. You also can not start it with the key in the run position.  |
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Post by thxcuz on Aug 18, 2017 14:25:45 GMT -5
I only have the 2 position ignition.
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Post by Raizer on Aug 20, 2017 9:33:35 GMT -5
The headlight shouldn't effect the spark at all.
My last one had all the lights and anything else it didn't need cut off* and it still ran fine
*I was 13, couldn't afford a dirt bike so hacked up old scooters to thrash around the countryside, QT50's can jump amazingly well haha!
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Post by ThomasTPFL on Aug 20, 2017 21:47:56 GMT -5
Is it one with the taillight wired such that it won't run without it?
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Post by thxcuz on Aug 21, 2017 13:57:21 GMT -5
Solved
New spark plug. Kicked right over.
Previous owner said plugs kept fouling.
My next step is to drain the tank and put some good gas in it. The oiler is disconnected so ill of course run pre mix.
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Post by gsx600racer on Aug 21, 2017 18:38:08 GMT -5
Sweet
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