OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Trimmers and Brushcutters Ryobi Trimmers & Brushcutters coil ryobi rst131es

Hi guys anything ,information on spark or coil problems on machine nospark,gsau22@yahoo.com.au

Hi,
First thing I do is make sure the stop switch wire or stop tab is removed, to isolate the stop circuit. Ensure you have a operational spark plug. A clean plug doesn't ensure that. (either get a new one or use a plug out of a machine which is working. If you don't have in line spark tester. Use a screw driver or simular metal object and wedge between cylinder cover and cylinder head so to create and earth for the plug. To test the spark plug for spark ensure it is plugged into the h/t boot and the threaded part of the spark plug is contacting the
screw driver. This is so it is away from the spark plug hole to help prevent ignition of any un burnt fuel remaining in the cylinder. To be sure but a rag loosely over the spark plug hole to prevent fuel vapours from escaping when you pull over the engine. If there is still no spark. I would squirt a little crc or simular into the end of the H/T boot and pull the h/t boot of and check to make sure the h/t end coil/clip is contacting the wire inside the h/t and isn't rusty etc.. If that all checks out. I would ensure the coil hasn't come loose ( use can do this if/when you need to remove the stop switch wire off the coil) also check the flywheel for signs of contacting the coil. If that all checks out check a basic flywheel gap, I would use 8'' thou as a start. If that all checks out after that. Replace the coil. They are pretty common, so a s/h may be easy to get hold of.
Hope that makes sense.

Hi Tim done al those things except the kill wire ,this appears to be hard to get to (think I might cut the kill wire it can be seen only just under the cover ,Can kill motor with a metal object on stop time )will I have to take off the shift and then the cover that covers the coil,its a rst131es trimmer attached photo not a good photo but it might show you.where would I get a sh coil thanks graham

Hi Shall try to get better photo




graham

Hi Graham,

My memory of it was to get to the stop wire, take of the black motor start, which holds to spark plug from hitting the ground or bench when you sit it down. When the cover is off you may be able to get to it with long nose pliers. The proper way is to remove clutch housing at drive shaft end of machine, clutch drum, clutch assy, then starter/motor cover assy. There is a small torx head screw down the center of the clutch drum drive shaft hole. You will need to put a piston stop into the spark plug hole or starter rope wedged in the hole between the top of the piston and the top of the cylinder top.

Hi Guys how many Ryobi coils are the same part,where do I finf parts list for each motor grahaam

All the earlier models with the same motor and same coil. Ryobi Lawn Scorpion was one of the many versions or names put on these. They were very popular. Most Lawn mower shop would have at least one laying around if they haven't been thrown out.