How perfectly should my Onan run?
Hi all! I've lurked here for AGES to fix all my tech issues; you're all very helpful. I'm looking for some info about my Onan Microlite 4KY Spec H generator. The gist of my question is this: When i...
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have cleaned/overhauled hundreds of these "tamper-proof" carbs, with
about 50% success rate. Very difficult to restore to perfect running condition, and getting balance on governor speed, sensitivity, idle, etc is a real art. Surging is usually air mixture problem, and "hunting" is a governor issue, but symptoms are similiar. The altitude compensating screw is the main mixture screw, you can pry the cap off carefully, dont bend the screw. When these units are running right, you should see a few speed fluctuations when load changes, but should steady out. Voltage will vary slightly, but should stay 115-125. A new carb would probably provide smoother operation, but sounds like it is acceptable the way it is.
about 50% success rate. Very difficult to restore to perfect running condition, and getting balance on governor speed, sensitivity, idle, etc is a real art. Surging is usually air mixture problem, and "hunting" is a governor issue, but symptoms are similiar. The altitude compensating screw is the main mixture screw, you can pry the cap off carefully, dont bend the screw. When these units are running right, you should see a few speed fluctuations when load changes, but should steady out. Voltage will vary slightly, but should stay 115-125. A new carb would probably provide smoother operation, but sounds like it is acceptable the way it is.
