livelyankee
Cadet
- Joined
- Jul 7, 2006
- Messages
- 25
I just "rebuilt" the carburetor on my 1975 Johnson 40 HP Electric using the recommended repair kit for parts.
Several comments and a question:
1. The kit is only approximately correct. Wrong float bowl gasket, no packing for slow speed screw, poor instructions.
2 I have the factory manual. It is also poor on carburetor rebuild
3. Bought a new float which turned out to be completely wrong. Bad info in reference lists.
Possible I have a non-standard carburetor, of course.
COMMENT/Question: There is nothing for the slow speed screw to actually screw into,. ie no female threads. The packing nut has threads which engage matching threads in the carb. body but there's nothing for the slow speed screw to engage . Apparently it is intended that the packing material provide a sort of "thread" for the screw. Is this true, or has a previous owner lost a part? Particularly worrisome since this carburetor has a "lean-rich" control which provides about a quarter turn of adjustment via a thumb control on the engine cover. This works thru a plastic lever device which is simply pressed onto the splines on the end of the slow speed screw. Getting this thing in the right poisition without pulling the screw out of the packing is a delicate act and I fear it will fall apart in mid-lake.
Several comments and a question:
1. The kit is only approximately correct. Wrong float bowl gasket, no packing for slow speed screw, poor instructions.
2 I have the factory manual. It is also poor on carburetor rebuild
3. Bought a new float which turned out to be completely wrong. Bad info in reference lists.
Possible I have a non-standard carburetor, of course.
COMMENT/Question: There is nothing for the slow speed screw to actually screw into,. ie no female threads. The packing nut has threads which engage matching threads in the carb. body but there's nothing for the slow speed screw to engage . Apparently it is intended that the packing material provide a sort of "thread" for the screw. Is this true, or has a previous owner lost a part? Particularly worrisome since this carburetor has a "lean-rich" control which provides about a quarter turn of adjustment via a thumb control on the engine cover. This works thru a plastic lever device which is simply pressed onto the splines on the end of the slow speed screw. Getting this thing in the right poisition without pulling the screw out of the packing is a delicate act and I fear it will fall apart in mid-lake.