The references I use at each fuel gauge mark is as follows:
1. Fill gas to neck of filler without touching bottom of cap.
Reset either Tripometer to gauge mpg.
2. When needle reaches first mark (F) at least 25-30 miles should be shown on tripometer.
3. At midway (half mark) at least 90-100 miles should have elapsed on tripometer.
4. At top mark of Red Area at least 140-150 miles should show on tripometer.
5. Red Area is approximately last 50 miles.
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The mid way area of Temp gauge is normal.
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If an FI error still allows the bike to run, then it's okay to run it. If an FI error
doesn't allow the engine to run, you don't want to run it anyway.