string trimmer

kevbocometh(7)May 17, 2011

ok its a ryobi cs330 and before anybody says anything...i hate chinese engines and it was a gift. I pulled the starter cord out and it wouldnt go back in. i took the whole thing apart, rewound it, put it back together and the string pulled out and wouldnt go back in again. i repeated the same steps over, took whole thing apart...same result. next i started pulling the pull string every step of the way. it messed up when i put the spark plug in. could the cylinder head be hitting the spark plug? this has me really confused and frustrated. any help would be much appreciated. thank you.

p.s. please refrain from comments like "get a new string trimmer" this isn't about the trimming any more...it's personal.:)

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ggoyeneche

Two thoughts:

Did you tension the spring before you rewound? Need enough tension equivalent to two additional turn to get good retract action.

Is the cord pully properly engaging the spring. Spring end is bent in a fashion to mate with the pulley. It it gets distorted of otherwise broken or damaged, cord will pull out ONCE, but won't retract.

Since your Ryobi is a "half-shaft", starter is below engine, between engine and output shaft. You need to remove engine to access starter. When you reinstall pulley, make sure spring in engaged and you have an extra one or two turns of tension, fully retracted.

If you can't get the spring to engage the tab of the pulley, you might be able to bend with a pair of needle-nose pliers, but more likely you'll need to replace the spring A98773A which should be $6 to $10.

    Bookmark   May 18, 2011 at 1:05PM
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rcmoser

could the cylinder head be hitting the spark plug? No, but the piston could if the connecting rod bearing are gone. But, you would know this after you started the engine and rev it up. this would cause the piston to grow in the cylinder bore do to the lack of needle bearings (should be making clacking sound also when the rpm changes up or down)causing it to hit spark plug electrobe benting all the way closed.

I agree with Ggoy spring not wound tight enough and it you did as he say it's coming unwound. You should be able to hear it when the spring tension uncoils.

    Bookmark   May 18, 2011 at 7:27PM
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