My mower has 53 hrs on it and it would backfire when turnig it off now it just eats engine oil

Be aware that some Honda engines like the HRS21 have plastic carbs and needle valves. Watch what your soaking them in because it can eat them up, destroying them.

any leaks from exhaust/ engine join

Check you oil level sounds like it is low sensor will turn off motor if to low.

when was the last time you took a look at the cutter blades,,or serviced the cutter deck? if the cutting blades are blunt or rounded off it will stall the engine stress the belts and the clutch,,,also if the mower has been standing un ran all winter it may have "rust" on the engine valves,,running the engine unloaded for a time may knock this off but under load the compreshion is pushed up into the inlet and pops back through the carb,,,try putting into the fule a little "two stroke oil" only 5cc a gall no more! this will lube the velves and carb,,,but sharpen them cutter blades up first,,,or its like trying to eat a half cooked stake with a blunt knife and no teeth? that reminds me? were have my teeth gone?

The YTH2042XP mower does display a message every 25 hrs which reads in full 'CHG OIL'. It is short for, and a reminder to, 'change the engine oil'.

Hi,

Sorry about this problem but i would suggest that you flush oil and get new oil into it. Please do this and your problem would be solved.

Regards

This is caused by two things low oil level and overheating, The oil also has a cooling agent in it so if it was run low the engine would not get lubrication and overheat possibly causing the conrod to break if you say its only 10 hrs old i would be talking to the dealer you purcased it from or the engine manufacturer. its unusual for an engine with very little hours on it.

Sounds like you may have too much oil in the engine. Check your oil level.

sounds like you have a blown head gasket....pull spark plug and check for oil on plugs....thats your bad head gasket

with only 75 hrs isnt it still under warrenty