G'day to you and hey... congrats on acquiring your '48 Cub
.. very cool way to do it. 10 acres and a mobile home came free with the Cub .. gotta like them deals
How6 wrote:It will idle with no load but advancing the throttle causes the governor rod to cycle repeatedly until the engine dies? What will happen if I disable the governor? The manual says to take it to the dealer but there is no one there who knows anything about it. Any ideas?
Do not disable the governor
Yup, sounds like fuel starvation. Bet you dollars to doughnuts that there is either dirt/crud, rust or a flake of varnish blocking either the inlet, the small longitudinal orifice in the main jet or the cage in the carb. Solution? Well, drain the tank into a filtered container, then remove the Fuel Sediment Bowl.
Repeat the flushing of the tank with that gas until the fuel runs clear and clean. Check the Fuel Sediment Bowl and clean it. Make sure the screen if clean and not blocked with varnish then reassemble making sure the screen and gasket are installed properly.
Next make sure that the carb inlet screen is clean and there is not dirt/crud/rust/varnish blocking the screen. Then, check the main metering jet, ensure both the horizontal and the longitudinal orifices are clean. For the longitudinal orifice, use a strand of soft copper such as 1 strand of twisted pair -- aka telephone wire and gently insert the wire into the orifice. You should see the end appear in the larger orifice. After that, remove the float hinge pin - remove the needle and cage. Hold the cage up to natural light and see if it is opaque. If so there is varnish, clean appropriately. Also if there is any dirt/crud/rust - same thing. Reassemble and reinstall onto the engine. Give it a shot. Should run better now.
Also.. as part of your maintenance routine it would be a good idea to spray some sort of penetrating oil such as PB Blaster, Nutz Buster, Solvo-Rust, Kroil, Deep-Creep etc., onto all the linkages and connection for the governor. Move the governor rod a number of times to ensure that any dirt/crud that may be in some of the connections is cleaned out. See the drawing below for the points to spray - everywhere there is a joint/connection.
There is a lot of information available to our members and I would encourage you to follow the links below. Well worth your while.
Forum Family. And you have come to the right place for all things Cub related. If you click on the Site Rules, Regulations, & Important Information
, it will point you to
the Welcome Wagon
wherein you will find links to many useful sites and topics. One of the most important resources are Owner's Manuals, Parts Catalogs and Service Manuals. The Cub Manual Server
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-- well the pdf's of course