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Author  [Modern View]

02-07-2019 18:08:35

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Have a wd45 and run the carb rich for a higher RPM do you think it would pull better like that or go back to standard setting ?

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D beatty

02-08-2019 07:08:55

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 Re: CARB in reply to loota, 02-07-2019 18:08:35  
I run stock RPM with my WD45 farm stock pulling tractor.The carb is set to max setting without smoking.If you see black smoke your losing HP.If everything is in good working condition and stock RPM the 45 will have all the HP you need.I have never run out of HP with my WD45. I break traction before I run out of power.

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02-08-2019 06:36:09

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 Re: CARB in reply to loota, 02-07-2019 18:08:35  
When I adjust one, I have the engine fully warmed up. Place the throttle to wide open position. Turn the main jet in slowly until the engine speed just starts to slow down and from that point back it OUT one full turn. If the engine stumbles when throttling up from a dead idle when fully warmed up, give it a little more until satisfied. 1 1/2 turns out is max for me. This assumes the engine is in good tune.

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Brian G. NY

02-08-2019 05:48:16

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 Re: CARB in reply to loota, 02-07-2019 18:08:35  
Quoting Removed, click Modern View to see

It is obvious while adjusting the main jet that "running rich" will not increase RPM.

When adjusting the jet, the engine will slow as it is leaned too much and slow again as it is enriched too much.

Somewhere in the middle is the ideal setting for RPM and power which will sometimes be effected by temperature.

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02-08-2019 05:17:55

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 Re: CARB in reply to loota, 02-07-2019 18:08:35  
Run the carb "rich" for a higher RPM ?? If this means operating the engine with the L-shaped needle valve on the bottom front of the carb more open (out), all you will do is use more gas. There is a sweet spot for mixture and any more than that doesn't increase RPM's and burns more fuel per hour. What exactly are you trying to accomplish?? There is no magic trick to making more HP than the engine was ever rated for. By that I mean if Nebraska Test rated that tractor at 45 HP, that is the absolute most HP it will ever have regardless of how you think you can tune it up better.

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