2 of my km90s finally died on me so a few months ago I bought a km91. Ran fine up until last week. Started to bog down after running for 5 mins. Let it cool down and runs fine for 5 mins again bogs down.....getting worse as it goes on. I'm running good gas and oil in it, 90% of its work load is line trimming and 10% hedge trimming. I had zero issues with the km90s but the 91 has me scratching my head. Can anyone help?????
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