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Disassembly:
Remove the carb from the engine, and determine what pieces are included in
the rebuild kit you will use. I used the Carburetor Shop kit. This kit includes
the accelerator pump check valves, idle jet, metering jet and the accelerator
pump plunger / return spring. It also includes all the gaskets and seals needed.
Next assemble the tools you will need to do the job. I have some screw drivers
that I have ground to just slip into the holes where the juts are located. In
addition to the tools shown below, I use a "number drill set" to check orifice
sizes. These drill ONLY are used for checking hole size and never drilling
holes.
I disassembled the entire carb. This ISN'T necessary. All the jets can be
cleaned and checked for size without removal. I would suggest only removing what
you will replace unless there is a specific reason for removal.
In as much as there were no instructions in the rebuild kits, I referred to
my Factory Service Manual (FSM) for disassembly.
I start from the top (air horn) and work my way down to the base (throttle
body). Being very careful to place all parts in an organizes manner. Even though
this is a single venturi (one barrel), there are a lot of small parts.
Click on pictures for a larger version.
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Here are the tools I used. A good set of screw drivers is required.
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This spring actually opens the choke plate.
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This shows how the choke spring is installed.
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During disassembly note how things were assembled.
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Inside the fuel feed port is the end of the "seat" portion of needle & seat
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During disassembly, look for problems like this gasket that probably was leaking.
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Good gasket - deformed gasket
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This is the idle jet, it is fed from the bottom of the bowl
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Fuel flows up the idle tube.
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These are the accelerator pump check valves
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This is the accelerator pump discharge nozzle
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Main jet and backup screw. Notice copper gasket around main jet.
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Parts asociated with Air Horn
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Parts associated with main body.
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Parts associates with the throttle body.
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continue
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Visitors since January 26, 2004
Copyright Richard N. Meagley Sr.
Last revised:
May 25, 2007.
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