Andy here,
Can someone give me some advice toward fixing this issue with my Hyundai Mower.
I dont know the specific engine name or type, but I own the HYM430ST-SP.
It was running extremely slow so I went to a local shop(now closed). They explained that the tension spring had rusted and rhat it needed replaced(£10 labour included). I am aware of how to fix it, but wanted it done properly and professionally.
It worked fine for a couple of months but now won't stop surging. The revs are jumping between 3700-4200 constanlty and the tension spring it bumbing back and forth.
I decided to try and fix this issue myswlf with little improvement.
I was told to dump it onto its side and pull a few time but have refused because I dont want fuel or oil flooding any parts of the engine.
Can someone please give me proper advice on how to stop it surging.
Thx,
Andy.
