Replace spark plug.if spark plug okay problem could be carburetor or air leak at fuel lines or check primer bulb for crack which cause air leak.any breaks in fuel line or primer bulb cause air leaks fuel system cause carb not get fuel run engine.
SOURCE: ryobi gas leaf blower starts but will not stay
carburetor & fuel system needs to be cleaned and carburetor diaphragms and gaskets need to be replaced, inspection of fuel lines and filter
I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae
SOURCE: Ryobi RY08576 25.4cc was started without mixed fuel
If the engine is sticky ie harder to pull it might have to be pulled apart new piston and honing of cylinder. not difficult just a pain. If it doesn't seem any harder to pull, Drain all of the unmixed fuel. Put a few drops of 2cylinder oil in the spark plug hole and pull the starter a few times with the plug out of it. Put a few more drops in repeat. Replace the plug (new plug) Put in mixed fuel prime the system cross your fingers and it should start up for you.
SOURCE: RLT30HT 30CC PETROL STRIMMER difficult to start
Hi,
The plug that I have in my 720r is a Champion RDJ7Y. Can I suggest that you pull the old plug out and look to see which one you have? Also when you buy the new replacement it should already be gapped for what you need.
Good luck!
SOURCE: RYOBI RBL-30MVA 30cc when pressing the primer bulb
The diaphragm in the carb may need to be replaced. Make sure all your fuel lines are fine. On these inexpensive blowers the fuel lines tend to get brittle and crack and fall apart.
Testimonial: "thanks, will this be a costly thing to get done? will Ryobi replace the part?"
SOURCE: ryobi backpack leaf blower about three years hard to start
Basics to check:
1) Spark plug - brown or dark brown - OK
a) is it carbon or fuel fouled
b) is there spark
2) Muffler remove for inspection
a) exhaust screen clean or plugged
b) inspect cylinder wall/piston as the flywheel is slowly rotated
3) Check cylinder compression
Fuel starvation - 'lean fuel' condition
Basic things to check:
1) spark plug
2) spark arrestor in muffler
3) fuel lines and tank filter
4) turn adjustment needles out (counterclockwise) 1/4 to 1/2 turn
Chain Saws:
5) check impulse tube and intake boot for cracks or leaks
*if all of the above are OK and/or do not improve performance then:
Remove Carburetor
6) replace gaskets/diaphragms
a) use a spray carb cleaner to clean jets, holes, and body of carb
b) fuel pump diaphragm goes against the carb body,
then the gasket towards the outside
c) metering gasket goes against the carb body,
and the diaphragm goes towards the outside
I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae
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It is only 1 yr old and hasnt been run that much. Looked for spark plug but can't find it on the blower. Owners manual missing
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