Hi, I have a 2004 hydro 80, had it for 18 months and has been great. Start of last month it cut out on a job after about 20 mins work. After a few minutes it ran fine again for a while ten started running rough, surging etc both when cutting and just travelling, (though more when cutting) sometimes i’ll get 30mins from it other times just 10.
Did a service, oil, air filter, oil filter, fuel filter, and spark plugs. Checked that the fuel pump was pushing fuel through and removed carb to check for anything obvious. Still not sorted.
Sent to local service shop, they sprayed carb cleaner, vacuumed fuel tank and changed fuel filter tested and dropped it back 2 weeks later. Cut my lawn with it and 10mins in same issue!
Any ideas or thoughts? Are there any sensors or faults which occur based on engine temp? Only wonder as fuel flow looks to have been explored unless perhaps temperamental fuel pump.
I’m not a huge outfit and ride on is mainly for larger sites to save me time so don’t want to be without it again for weeks on end or to end up with huge bills as £50 already spent. Should I just bolt on a new carb?