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Gary Patch

Linhai 300 idle speed

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Hi my linhai 300 is hard to start and  engages gears at idle which is 1200 rpm was looking at cdi says on it 7500 rpm does this mean quad should idle at 7500 rpm as this would explain transmission problemb as idle is too high thanks gary

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My guess is that bike should idle at about 800 to 1000 rpm warm and 1200 at maybe a choke position. If it’s reving high after it warms up you can make an adjustment on the carburetor or intake if it’s fuel injected. 

7500 would be the maximum  revolution limit where the cdi would go into safety mode and shut down. 

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thanks for reply have adjusted carburettor wont idle slower without cutting out spark not the best so am thinking bad cdi or coil

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That’s strange. I wouldn’t think it’s the cdi maybe a rectifier/regulator??

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Turns out it should idle around 1200 rpm was a broken clutch shoe causing gears to enguage at idle,just have the problemb of hard to start with weak spark so was going to start replacing coil  etc any input welcome

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I would change the secondary coil and spark plug wire.  You can test the coil first but it’s cheap enough to replace. Don’t forget the wire also.  

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That is the secondary that you ordered.   Hopefully that’s the problem. I think it is but I’ve been wrong before.  

  I’m surprised that 1200 rpm is the norm. I would have figured 1000 max.    

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New coil in frank  not really better I put volt meter to stator jointers and all seem to be charging any suggestions what to do next

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That with a fresh plug also ? 

Only other thing I can think of would be the regulator. The stator is putting out proper voltage ? Battery is putting out proper voltage ? 

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yep battery plug and stator ok wasn't aware regulator could effect spark but its cheap enough to change any way will let you know thanks for help

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