OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Trimmers and Brushcutters Ryobi Trimmers & Brushcutters Ryobi trimmer will not start and floods engine

Hello,
My apologies if I posted this in the wrong forum. Bit confused between 'mowers and 2-stroke engines' and 'brush cutters and trimmers'.

I have a Ryobi trimmer that recently stopped working and would not start no matter what. I have taken the following actions methodically. I have also attempted to start the trimmer at the completion of every step.
1. Put fresh fuel. Ratio of 25:1 as recommended.
2. Dismantled engine and cleaned piston head and cylinder. Renewed seals.
3. Replaced spark plug. Checked for spark. All ok.
4. Cleaned muffler.

I am following the full choke - half choke - open routine, including making sure that there is fuel in the bulb.

All my attempts to start the trimmer have resulted in the engine flooding and the engine just refuses to fire.

I have also noticed then on full choke position, there is fuel leaking from the gap between the choke lever and the carb when I begin pulling the start cord. No leaks otherwise.

Short of rebuilding the engine completely I think I have pretty much exhausted my options. Unless I am missing/overlooking something ?

Your help/advice would be greatly appreciated.
- regards
Navin

Navin,

Ok you will have to replace the carby diaphragms including the needle.

The carby kit you need to do this is K10-WAT which includes all you need providing the carby is a Walbro type the cost is about $25.00 for the kit.

We have information in the parts list and manuals area under questions on Trimmers & Brushcutters.

I had a problem like that once, had spark, compression and fuel but
the engine would not even fire. The problem was the flywheel nut had
loosened which caused the flywheel to shear the key which put the
timing out, it might be worth checking.

Thanks for the prompt advice Bruce. Could you please provide me with access to the part list forum ?

Navin,

That area is for people that make a donation by pressing the donate button.