Whenever I go out recently, after running for 5 to 10 minutes at moderate RPMs (<4000), I'll get a 6 second alarm. When the alarm goes off, the engine continues to run normally. No change in operation or performance. This generally happens only one time in an outing. I could run for hours after this without another alarm.
However, intermittently and not associated with the alarm, RPMs may drop by 200-400 for a few seconds and then return to normal. This may occur 2 to 3 times in an hour of running. Happens at high or low RPMs.
I just did a complete service - plugs, upper and lower oil, filters and impeller. Symptoms have not changed.
Any thoughts are appreciated.
However, intermittently and not associated with the alarm, RPMs may drop by 200-400 for a few seconds and then return to normal. This may occur 2 to 3 times in an hour of running. Happens at high or low RPMs.
I just did a complete service - plugs, upper and lower oil, filters and impeller. Symptoms have not changed.
Any thoughts are appreciated.