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'40 H Carb Adjustment

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Vince

07-29-2002 14:08:48




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I have a 1940 H, it blows a little smoke. I wondered if I could adjust the carb a little and get rid of the smoke, thniking it may be running a little too rich. However, of course I have messed it up, of course. It will start and run, although it sound like it is just running on 2 or 3 cylinders. I have not messed with anything but the carb. Please help. Thank you




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RayA

07-31-2002 19:22:27




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 Re: '40 H Carb Adjustment in reply to Vince, 07-29-2002 14:08:48  
Vince, you might clean your plugs or get new ones and/or make sure you are getting good spark from wires to plugs. You might have fouled out a plug running it rich or inadvertintly loosened a plug wire off plug or distributer. Was running my H a bit rich for awhile and had this happen to me. good luck, RayA



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Don LC

07-30-2002 08:17:23




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 Re: '40 H Carb Adjustment in reply to Vince, 07-29-2002 14:08:48  
Looking at your carb. the top screw is the idle throttle stop screw, that sets the idle speed....The next screw down is the Idle mixture adjusting screw,slowly turn this screw in(clockwise),careful not to jam it into the seat ,you can damage it....turn the screw left(out) one full turn....Start the engine and let it warm up to operating temp.Cover the radiator if you have too....Set the hand throttle all the way closed...If the engine dies turn the top screw (the throttle stop screw) in until the engine runs at a fast idle...now back this screw back out until it is at the speed you want....If it runs rough or dies turn the Second screw(Idle mixture adjusting screw)in or out until it runs the fastest and the smoothest...Now the lower screw on the front of the carb. is the Main jet,this is the jet used to feed the engine when running faster than idle....Open the throtle full open....adjust this screw until the engine runs the fsstest and the smoothest....You may want to readjust, later.....You can also ,hold the brakes and put the engine under a load in 4th gear to see how it is going to run under a load....Good Luck...Don.....You need an OPERATOR'S MANUAL.....

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Vince

07-30-2002 08:56:56




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 Re: Re: '40 H Carb Adjustment in reply to Don LC, 07-30-2002 08:17:23  
Thank you, I know I have ready about this before. I hope I have time to try this tonight. I will let you know the results.



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