Re: Carburetor starter switch 1049 super 8. 327
Posted by JD in KC On 2012/9/16 12:00:11
If it starts by jumping the two terminals on the carburetor starter but does not start when the throttle linkage is advanced then I'd take a look at the following possibilities:
1. The steel ball is not moving freely, or is stuck in its cylinder. This could explain why the switch isn't making contact. It could also cause a vacuum leak.
2. The sliding contacts aren't making contact due to a problem with the shims (unlikely).
3. The contacts are dirty.
You can undo the screw that holds the bakelite piece in place and extract the switch mechanism (careful... there's a spring). Take note of the orientation of the metal piece that engages the steel ball... it's possible to install it upside down. You can then blast the cylinder with carburetor cleaner to ensure the ball moves freely. There is also a fine screen that should be cleaned (see diagram provided by Howard). Carefully clean the brass contacts on the sliding switch (I use Brasso and a piece of cotton rag). Re-assemble.
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1. The steel ball is not moving freely, or is stuck in its cylinder. This could explain why the switch isn't making contact. It could also cause a vacuum leak.
2. The sliding contacts aren't making contact due to a problem with the shims (unlikely).
3. The contacts are dirty.
You can undo the screw that holds the bakelite piece in place and extract the switch mechanism (careful... there's a spring). Take note of the orientation of the metal piece that engages the steel ball... it's possible to install it upside down. You can then blast the cylinder with carburetor cleaner to ensure the ball moves freely. There is also a fine screen that should be cleaned (see diagram provided by Howard). Carefully clean the brass contacts on the sliding switch (I use Brasso and a piece of cotton rag). Re-assemble.
Attach file:
(104.43 KB)
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