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RaymondDurban wrote:If I'm reading this correctly, you set high idle (as much as you could get) at 16* BTDC, but when you retard the throttle it stays at 16*? This should not happen and it leads me to believe that the weights in the distributor are stuck, not allowing the advance function built in to work as it should.
For the low idle, there is a screw on the back side of the carb on the throttle shaft. As you back the screw out, it allows the butterfly to close reducing the fuel allowed into the combustion chamber which slows the engine. This is the easy fix.
For the high idle (full throttle-no load), there is a bolt on the top side of the governor that limits the travel of the governor rockshaft, which limits the movement of the throttle shaft in the full throttle position. Before you mess with this adjustment, set the low idle on the carb and repair what is necessary inside the distributor to allow the advance function to work.
After the advance is working, then check the timing and RPMS again, both low and high idle. If it is still low, you can adjust the bolt on the governor to allow the high RPMS to increase to the desired setting.
Bob McCarty wrote:Dieselrider, Where are you located? There maybe someone close by that can help with the carb, or a Cubfest that you could also attend.
RaymondDurban wrote:Ok, if backing the screw out kills the engine, then it's either the timing killing the engine or lack of fuel. Reset the timing to around 8* (approximately half way between the low and high marks) for the time being. Then retry backing out the screw and see if the engine still stalls. If it does, then your Carb will also need going throuh, with particular attention to the idle circuit (passages).
Here is a page from the manual that you can see the distributor weights (item 14):
RaymondDurban wrote:Were the springs still attached and in good shape?
Jim Becker wrote:Try stastic setting the advance at 0 degrees. Then start the engine and check it at fast idle. Your current low idle is so low that the distributor may already be fully advanced at low idle.
outdoors4evr wrote:Your tach is probably fine. Just make sure the settings on the tach match the application. One long piece of tape all the way across the diameter of the pulley gives you two counts per 360 degree rotation. Verify that your tach is not looking for one count per 360 degree rotation. It may be reading double the number or some other multiplier.
Getting those advance weights in the distributor to move freely and verifying the springs are functional are key to getting the timing right. The manual says to set your timing to 16 degrees at wide open throttle (high idle) and then to reduce the throttle to an idle and verify the timing moves toward 0 degrees. It is more important to have it right on at wide open throttle than at an idle.
Dieselrider wrote:Jim Becker wrote: Your current low idle is so
lowHIGH. . .
"low idle is low"?
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