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4 Cycle Straight Shaft String Trimmeris rated3.5out of5by27 . Rated3out of5bySam From DallasfromOk but there is an issue I bought this about 5 months ago. I would say it is a good trimmer. It starts easy and the various tools makes it pretty useful. The fact I don't have to mix oil and gas is really great. My problem is that I shut it down for the summer - I ran all the gas out of it so it would not get stale. When the leafs in Texas finally fell I bought the blower. I put gas in it and now the cap leaks. I cannot tighten enough. I went to this sight I tried to talk to someone. When I called I was transferred to a third party who was more than happy to sale me a new gas cap. The cost is $2.85 and $6.00 shipping so it is not that big of a deal but it is a pain in the neck. Home Depot did not have any replacement parts I could find. They may have them but there is never anyone there to help you.... Rated4out of5bydjf0927fromGreat Tool. Bought to use as edger and weed wacker and it works great. Could use a shoulder strap to make it a little less heavy (have pretty large lawn and take awhile to do the yard work). Looking to maybe purchase the blower attachment and/or pole saw. Rated1out of5byBegley79fromProblems Worked great.....twice. Third time I tried to use, evertime I throttled the engine it would die. After doing some research, this is common. SOME STRAIGHT FROM THE BOX. Very disappointed. Rated1out of5byshipwreckfrompowerful but not for long I bought this a few months ago and it worked the first time and was powerful. the second use it started did not make it through warm up died and never started again. I exchanged it for same product and it lasted a little longer. the shaft is bent from trying to get string to extend. Now rope will not pull. I see a lever that falls and stops pull wheel from turning. Rated2out of5byJustinfromRan great first season. Headaches after that. Bought this trimmer last year. Out of the box it worked great. I used to maybe 3 -4 times last year as we didn't get a lot of rain and grass really didn't grow. This year, attempted to use it and it ran for approximately 10 minutes and died. Could not get it to restart. Trained fuel tank and fuel filter came out and fell on the ground. the black hose from he filter to the tank fitting had degraded and was falling to pieces. Purchased new fuel line and plumbed it from carb to fuel filter. Trimmer stated on first attempt and ran for 20-25 minutes....and died. Could not get it to restart. You know what? My time is more important than dealing with this substandard, awkwardly designed trimmer. I have ordered a Makita 4 stroke trimmer and this one will be sold on Craigslist. Done. Dusted. Will never use a Ryobi again. Rated2out of5bypratt992fromGarbage Bought this machine three years ago and it worked great at first. Year three, went to start it and it will not start. Tried everything short of replacing the head. I am very disappointed with this, because we also bought the tiller and edger attachments, which are not useless. Save yourself a headache and buy something else. Rated5out of5bySlickfromDependable tools! I bought this Ryobi 4 cycle trimmer one month ago. I've done a great deal of work with it since. I only deal with Ryobi tools, it's top quality equipment, reliable, and efficiency is what I look for. RYOBI is it. Get you one; toy want be sorry! Rated5out of5byExcellironfrom4 Cycle Trimmer I LOVE IT! It has more power than a 2 cycle, and NO mixing gas! Easy to change heads from trimmer to cutting blade in 20 seconds. Very well balanced and powerful! Use only Ryobi products, they are tough and last. Rated4out of5byhectorfromit is better than the 2 cycle i bought it because the 2 cycle were going bad in just a couple of use. i got this like 7 months ago and still working fine plus the noise level is quieter, and it feels smother too. Rated4out of5bySleddyEddiefromEase of starting I am so glad I decided to go with the 4 stroke trimmer with the ease of starting this 4 stroke and not having to mix gas & oil makes for getting the job done ten times faster! Rated5out of5byRyobifanfromGreat weed eater I bought this tool a few months ago and have zero problems. It's quick to start, runs great and has been heavy duty enough to take care of three acres. Rated5out of5byAnotherCustomerfromWhat's not to like? Plain gas, no mixing, great power + attachments. I use the brush cutter and tiller attachments. Starts on one or two gentle pulls. Highly recommended. Rated5out of5byJerryfromEasy start and light weight. I bought this for my wife. I use a gas powered one and it is to difficult for her to start and to heavy. She love the battery operated one. Rated4out of5byBigV11711from Awkward, Hard to Service. Kill switch tempermental. On the positive note, LOVE NO MIXING OF GAS/OIL. Rated5out of5bydmitchellfromPOWER!! Love the power curve on the 4-cycle trimmer! Will never go back to a 2-cycle trimmer. All Aces. Rated4out of5bycarlettofromon /off button went out strong machine but on /off button quit working aka kill switch. Rated4out of5bystan1954fromHeavier than I thought Runs and operates good and easy to start and change line Rated5out of5byGerasfrom Rated5out of5byguayacanfrom

The 4 Cycle Straight Shaft String Trimmer brings power, less hassle, and performance to your lawn maintenance. The 4 cycle low emission engine and REEL-Easy bump feed string head make trimming your yard a breeze while keeping the air around you cleaner. The straight shaft allows for extended reach trimming under decks, around obstacles, and in hard to reach places. With the RYOBI 4 Cycle string trimmer, you no longer have to worry about mixing gas and oil. This innovative unit is attachment capable, accepting all nine of the Expand-It universal outdoor attachments. Backed by a RYOBI 3 year warranty while offering less hassle and mower power, the RYOBI 4 Cycle Straight Shaft Trimmer is the residential string trimmer of choice.

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  • Features
    Specs
    Includes
    Reviews
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    Manuals
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    No Mixing of Gas and Oil

    Attachment Capable: Accepts universal outdoor attachments

    Powerful 4 Cycle low emission engine

    REEL-EASY™ bump-feed string head for fast and easy reloading

    18 in. cut width with .095 in. dual line

    Straight shaft for extended reach

    11.8 lbs.

    3-year limited warranty

    • Engine Type: 4 Cycle/Stroke Low Emission Engine
    • Trigger: Variable Speed Throttle
    • Cutting Path: 18 in cutting swath
    • String Diameter: .095 in. dual line
    • Line Advancement: Bump Feed
    • Attachment Coupler: universal attachment coupler
    • Weight: 11.8 lb.
    • S430 Straight Shaft String Trimmer
    • Ergonomic Front Handle
    • Straight Shaft Grass Guard/Deflector
    • ReelEasy™ String Head
    • 4 Stroke Engine Lubricant
    • Funnel
    • Operator’s Manual

    What is the best way to cut weeds and grass using my string trimmer?

    • Keep your string trimmer tilted toward the area being cut
    • Pass the unit from left to right (if using a curved shaft string trimmer) and from right to left (if using a straight shaft string trimmer). By following these directional cutting paths, you will avoid having debris and grass clippings from being directed back at yourself.
    • Use the top of the line to do the cutting. Do not force the string head into uncut grass; this could cause the trimmer to bog down.
    • Avoid trees, shrubs wire and picket fences.

    How do I advance the line on my REEL-EASY™ String Head?

    Line advance is controlled by tapping the string trimmer head on grass while running engine at full throttle

    • Run the engine at full throttle
    • Tap the knob on ground to advance line. The line advances each time the knob is tapped. Do not hold the knob on the ground

    NOTE: The line trimming cut-off blade on the grass deflector will cut the line to the correct length

    NOTE: If the line is worn too short, you may not be able to advance the string by tapping it on the ground. If so, stop the engine and manually advance the line.

    How do I manually advance the line on my REEL-EASY™ String Head?

    • Stop the engine and disconnect the spark plug wire to ensure you will not be harmed
    • Push the knob in while pulling on line(s) to manually advance the line

    How do I replace the line on my REEL-EASY™ String Head?

    • Stop the engine and disconnect the spark plug wire to ensure you will be safe while replacing the line.
    • Rotate the spool clockwise as necessary to align the arrows on the spool.
    • Cut one piece of trimmer line at approx. 20ft. in length. Insert the line in the eyelet on the string trimmer housing. Push until the end of the line comes out the opposite side of the string head. Pull the line from the other side until equal amounts of line are on both sides of the spool.
    • Rotate the spool clockwise to wind the line on the spool until approx. 6 in. of line is showing on each side.
    • Push the spool retainer down while pulling on line(s) to manually advance line and to check for proper assembly of the on the string head.

    How do I stop my RYOBI Gas String Trimmer?

    To stop the engine, depress the STOP switch to the stop position

    How do I remove the attachment from my RYOBI Power Head?

    • Stop the engine and disconnect the spark plug (if a gas unit), remove the battery (if using RYOBI 40V Power Head)
    • Loosen the knob at the connection point
    • Push in the button and twist the shafts to remove and separate the Power Head from the Attachment

    How do I install my attachment to my RYOBI Power Head?

    • Stop the engine and disconnect the spark plug (if using a RYOBI Gas Power Head); remove the battery (if using the RYOBI 40V Power Head).
    • Loosen the knob on the coupler of the power head shaft and remove the end cap from the attachment (black rubber piece with loop hole for hanging).
    • Push in the silver button located on the attachment shaft. Align the button with the guide recess on the Power Head coupler and slide the two shafts together. Rotate the attachment shaft until the button locks into the positioning hole.

    NOTE: If the button does not release completely in the positioning hole, the shafts are not locked into place. Slightly rotate from side to side until the button is locked into place.

    • Tighten the knob securely.

    How do I attach the front handle to my RYOBI Gas String Trimmer?

    • Remove the wing nut, washer, and bolt from the front handle.
    • Install the front handle onto the top side of the drive shaft housing in the area indicated by the label.

    NOTE: The open side of the handle should face the user

    • Place the bolt through the front handle

    NOTE: the hex bolt head fits inside the hex recess molded into one side of the handle.

    • Reinstall the washer and wing nut.
    • Tighten wing nut securely.

    How do I attach the grass deflector to my gas string trimmer?

    • Remove hex screw, washer, and wing nut from the grass deflector.
    • Press the grass deflector onto the bottom of the shaft.
    • Insert the hex screw through the grass deflector and the bracket on the shaft.
    • Place the washer on the hex screw.
    • Place the wing nut on the hex screw and tighten securely.

    How do I add engine lubricant to my RYOBI 4 Cycle Unit?

    NOTE: Check lubricant level before each use. For best performance, engine lubricant should be changed after every 25 hours of operation.

    • Unscrew the oil cap/dipstick and remove from your unit.
    • Using a funnel (one was provided), add engine lubricant through oil fill hole; fill.
    • Reinstall the oil cap/dipstick and secure.

    How do I check my engine lubricant level on my RYOBI 4 Cycle unit?

    • Ensure your unit has been turned off.
    • Unscrew the oil cap/dipstick and remove.
    • Wipe dipstick clean and re-seat in hole; do not rethread.
    • Remove dipstick again and check the lubricant level. Lubricant level should fall within the hatched area on the dipstick.
    • If level is low, add engine lubricant until the fluid level rises to the upper portion of the hatched area on the dipstick.
    • Replace and secure the oil cap/dipstick.

    How do I start my RYOBI 4 Cycle String Trimmer?

    To start a cold engine:

    • Slowly press the primer bulb 10 times.

    NOTE: After the 7th press, fuel should be visible in the primer bulb. If it is not, continue to press the primer until you see fule in the bulb.

    • Set the choke lever to FULL CHOKE position.

    NOTE: Do not squeeze the throttle trigger.

    • Pull the starter grip until the engine runs.

    NOTE: If engine has not started after 3 pulls and:

    • Outside temperature is 60 F or lower, leave the choke to the FULL CHOKE position and continue to pull the starter grip until the engine runs.
    • Outside temperature is above 60 F, move the choke to the HALF CHOKE position and continue to pull the starter grip until the engine runs.
    • Allow the engine to run for 10 seconds, then set the choke lever to the RUN position.

    To start a warm engine:

    • Slowly press the primer bulb 10 times.
    • Set the choke lever to the RUN position.
    • Pull the starter grip until the engine runs. Do not squeeze the throttle trigger.

    How do I clean the air filter on my RYOBI 4 Cycle String Trimmer?

    NOTE: For proper performance and long life, keep air filter screen clean.

    • Remove the air filter cover. To remove, push on the latch at the bottom of the cover and gently pull the cover up.
    • Remove the air filter.
    • Clean the foam filter element with warm soapy water. Rinse and let dry.

    NOTE: if the foam filter element is damaged, it should be replaced.

    • Apply a light coat of engine oil to the foam filter element, then squeeze it out.
    • Reinstall the air filter.

    NOTE: Make sure the filter is seated properly inside the cover. Installing the filter incorrectly will allow dirt to enter the engine, causing rapid engine wear.

    • Replace the air filter cover by placing the slots on the air filter cover of the tabs on the housing, then push the cover down until it latches securely in place.

    How do I store my 4 Cycle String Trimmer?

    • Clean all foreign material from the product. Store idle unit indoors in a dry, well-ventilated area that is inaccessible to children. Keep away from corrosive agents such as garden chemicals and de-icing salts.
    • When storing the product vertically, do so with the engine up to avoid hydraulically locking the engine due to oil entering the combustion chamber.

    When storing 1 month or longer:

    • Drain all fuel from tank into a container approved for gasoline. Run engine until it stops.

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    Click the link below to access power tool replacement parts schematics and order parts online.

    For those customers that prefer ordering by phone, simply contact the Ryobi master parts distributor at toll free 1-877-545-4099, and place your order over the phone.

    Visit Ryobi Power Tools Parts Store


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