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Discussion Forum

H carb adjustments..does this sound right.

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Doug D

05-12-2001 09:59:26

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I have been tinkering with this for a few days trying to get it PERFECT. Perfect may be impossible, I realize, but I want it close.

I have the idle set just right. It will lug around in a sharp turn in 5th gear and not miss a beat. It does not need any choke to start, but it has been very warm. When I advance the fuel,after it is warm, it goes right up to top speed with no misses. So far so good. But when I go down the road and say I am putting along at an idle in 5th gear and then advance the throttle it still speeds right up, but when it gets to the top it lets out just a little puff of not very black smoke, and then goes away and runs like a trooper. Is this normal? I think I may be getting a little to anal about this.

Also, I have put a carb kit in it and I have a couple of leaks that I can't seem to stop. I have a very slow drip out of the main fuel adjusting needle and that discharge nozzle screw head. Any suggestions? or do I need to live with it.

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The Red

05-12-2001 10:06:32

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 Re: H carb adjustments..does this sound right. in reply to Doug D, 05-12-2001 09:59:26  
Doug lean your high speed down another 1/4 turn or so. If you have new packing material installed for the high speed needle, it sounds like you need to tighten down the packing nut a tad more. Keep a screwdriver on your needle while you tighten the nut so you don't mess up your mixture setting. I am not sure what you mean by "discharge nozzle screw head".

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Doug D

05-12-2001 15:36:40

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 Re: Re: H carb adjustments..does this sound right. in reply to The Red, 05-12-2001 10:06:32  
Red, if I had a diagram handy I could explain what I mean by "discharge nozzle screw head". This is what the main needle goes up "against" inside the carb. If you look at the carb, it is the screw head on the bottom left side of the carb. It faces down towards the front wheels....know what I mean?

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The Red

05-13-2001 05:20:19

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 Re: Re: Re: H carb adjustments..does this sound right. in reply to Doug D, 05-12-2001 15:36:40  
Doug I think you are running way too rich after you mentioned about starting without any choke. After it warms up, run it at full throttle and turn the high speed mixture screw clockwise until the engine starts to lose power. Then turn the mixture screw about 1/2 turn counterclockwise.

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05-13-2001 12:34:30

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 Re: Re: Re: Re: H carb adjustments..does this sound right. in reply to The Red, 05-13-2001 05:20:19  
My H doesn't need the choke even if it's been sitting for days. I pulled the plugs last night and it appears to be running very slightly lean!
Of course it has been running about 100 Deg. here for the last week or so.

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The Red

05-13-2001 13:45:41

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 Re: Re: Re: Re: Re: H carb adjustments..does this sound right. in reply to Zonie, 05-13-2001 12:34:30  
When it gets around 85 or above in Indiana, I rarely ever use the choke on a cold start. My Hs hibernate in a damp barn, so usually I need a bit of choke to get going.

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