Ryobi s430 replace timing belt
the ryobi s430 has a hole in the timing wheel with ,perhaps a red mark on it or next to it like mine.lining that up with the piece at the bottom that goes straight down puts the cam lobes right at 180 degrees away from the rockers and readies the valvetrain for the compression stroke.if you remove the valve cover,which by the way has a really tough reusable gasket,youll see the cam and rocker arms.you want the lobes of the cams to be as fara away from operating the rocker arms as possible.next, you ll find top dead center to be not quite lined up, with respect to magneto edges and flywheel magnets.using a tiny screwdriver, you can put the tip in the spark plug hole not quite an inch and rotate the flywheel SLOWLY.being careful not to somehow allow the screwdriver to become pinched between the piston and cylinder(that spark plug hole is at a funky angle)at some point,youll fee fell the piston approach top dead center.youll notice there are a few degrees that the flywheel will turn before the screwdriver will fall back down,indicating travel has begun toward bdc(bottomdead center).you want the crank asembly to be set in the center point between when the screwdriver stops rising out of the spark plug hole to the point it just starts to fall back in.that should be close enough.my problem now is getting the timing belt OFF.mine is bad and I've torn down all the way past the flywheel.at this point,i can see the timing belt,but now there's this pressed bearing in the way that ive yet to figure out how to remove.viva la ryobi
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