is a metal disc, looks like a clutch cover on the end of the power shaft that keeps the cover from coming off the recoil assembly to rewind spring and rope. Can’t see how to remove this clutch cover?
Ryobi

Experienced gardeners share their insights in answering this question :
You shouldn’t have to remove it. Just wide the disk up again to get tension on the recoil spring (lots of tension… enough to pull the rope all the way back in). poke the rope back out the hole ( the hardest part of the job) and put the handle back on. You should be back in action

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

The air filter may be clogged. If the air filter is clogged, the engine will get too much fuel and not enough air. As a result, the engine may stall. If the air filter is clogged, replace it.
Just Like Spark plug fouling, too much oil in the gasoline, inferior oil, a dirty air filter and/or continued operation at less than full throttle will plug the screen with carbon deposits. This prevents exhaust gases from flowing out, which leads to power loss or not running at all.
The clutch engages the clutch pads to spin the trimmer head. If the clutch assembly is defective, the clutch will not disengage the clutch pads, and the trimmer head will continue to spin, even at low speeds. If the clutch is defective, replace it. (Note: some string trimmers do not have a clutch.
Trimmers Stopped working

If your trimmer won`t turn on, especially if it has not been used recently, you may simply have a drained battery. Plug your trimmer into your charger and see if anything happens. Ideally your trimmer will recognize it has been connected to a power source and charge its battery.

If the drive shaft is broken, the string trimmer head won`t spin. The drive shaft is not repairable—if the drive shaft is broken, you must replace it. Need help finding your model number? If the threads on the drive shaft are stripped, the trimmer head will not stay on the shaft.
First check that you have a fully charged battery – a fully charged battery maximises runtime and also power, and minimises the chance of your mower cutting out in use. The next thing to check for is the condition of your lawn – for best performance, it`s recommended to mow your lawn regularly and to mow dry grass.
So, an air filter might clog over time. Once blocked with dust and debris, it cannot supply the required amount of oxygen to your trimmer` engine resulting in power loss. Find the air filter, take out this component, clean and reassemble it. Replace the part if you cannot reuse it.

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I have a 20″ bar chain saw (51 Air Injection)
ANSWER : The part no. of the spring is 501763101 it comes in a plastic keeper so is very easy to fit, check the web for sellers.

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Handle came off starter rope and rope rewound on spool. Took off power boom and took out tork screws and loosened cover from engine, but there is a metal disc, looks like a clutch cover on the end of the power shaft that keeps the cover from coming off the recoil assembly to rewind spring and rope. Can’t see how to remove this clutch cover?
ANSWER : You shouldn’t have to remove it. Just wide the disk up again to get tension on the recoil spring (lots of tension… enough to pull the rope all the way back in). poke the rope back out the hole ( the hardest part of the job) and put the handle back on. You should be back in action

Read Full Q/A … : Ryobi

Starter cord will not recoil – Homelite Mighty Lite Lawn Trimmer
ANSWER : Sounds like either something is caught in the spool or the recoil spring is broken or the rewind spool is broken. You have to disassemble the unit to see. Do that and I think you will find the problem. When you do find it and need more help, please ask. Good luck…Lee

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I start twice (when I pull starter rope) then the rope won’t go back
can I know what happen
ANSWER : Your starter/recoil unit has malfunctioned. Disassembly/inspection down to the point where you can get the recoil off will be required. Remove the engine cover screws. The recoil unit may be part of the cover or may be under it. You will easily be able to access it. Replacement parts for your mower are readily available.

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How do i rewind the recoil spring on my craftsman lawn mower?
ANSWER : Normally these small engines use a clock spring to retract the rope.
Remove the cover on the top and you should find the spring either broken or the tab where the spring end has broken off or jumped out of the mount.
You will need to pre-load the spring with enough tension to retract the rope.
Remove the pull handle from the rope, load the spring and then wrap the rope around the pully holding the pully and spring in the loaded position. place the end of the rope through the hole and tie up the handle. The rope should pull and retract without being installed on the engine.
Best explained here…
https://www.youtube.com/watch?v=tmo6oYOJJ4U

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How to remove the clutch housing to insert new starter rope
ANSWER : I see that this machine has a 31cc engine with chrome-plated cylinder. I will now include the detailed instructions on how to remove the clutch and insert new starter rope.

Remove the tube that holds the flex-drive shaft from the front of the motor cover.Remove the rear engine cover. Remove the throttle cable from the carburetor. Mark and unplug any wires for the on/off switch that go to the ignition coil (underneath front cover) if possible. Now if you have pulled the driveshaft tube out of the way, the clutch drum is up next. Inside it, screwed into the very end of the engine’s crankshaft is a Torx #25 screw. Before you loosen it, you will have to lock up the engine. To do so, remove the spark plug. Pull on the starter until the piston is down, then insert a length of clean, soft rope into the engine. The engine will come up and compress the rope, thus locking it in place to allow clutch drum and clutch removal. Loosen the T-25 (Star bit or Torx head) screw inside the drum.. You may be able to remove it with a long thin-blade screwdriver also.It probably won’t come completely out…it is made this way. Next, remove the clutch. It is screwed onto a small threaded section of the crankshaft Removal is counterclockwise.. It will be pretty tight. To help, apply peneterating oil. Whack the ears of the clutch near the center with a hammer and a dull flat-blade chisel or a small piece of wood unless there are bolts. then use a wrench. It will turn counterclockwise for removal and there will probably be a removal direction arrow on it’s face. After getting that off, remove the Torx screws holding the cover to the engine. The starter unit should be mounted inside as it mates with the top of the flywheel to start the motor. Remember to preload tension (5-7 turns) on the starter unit. Make sure the handle is installed. Jam the unit with a screwdriver or vise grips so you can insert and tie off the new rope. Then remove jam device and let recoil pull your new rope into place while holding the handle. Reassemble and you are done. Disassembly requires Torx head drivers and a good flat-blade screwdriver. Post back if needed.

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I have an MTD Snow Thrower Model 2M1 with a broken starter rope. I replaced the rope but cannot get it to rewind the rope after I pull it. What am I missing when I reinstall the rope and spool?
ANSWER : When you have the starter top removed, you must wind the spring BEFORE installing the rope. Wind the pulley until it is at maximum tension, then unwind it until the hole in the pulley lines up with the eyelet on the starter top. Now, put the rope thru the eyelet and into the pulley hole. It is helpful to have somebody holding the tension on the pulley, or you can insert a small tool thru the vent holes to hold the pulley in place. Use a figure 8 knot on the rope. Go ahead and tie the handle onto the other end of the rope, and release the pulley tension. It should now recoil into the starter housing. Test pull the rope several times to make sure it is moving freely. Reinstall the starter housing onto the engine and retest.
Good luck!

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How do I reset the starter cord to rewind. It does not recoil when I pull it to start. I have to take the cover off and do it manually.
ANSWER : Hopefully you don’t have a broken recoil spring. If the spring is not broken, then it’s just a matter of rewinding the starter rope with the spring tension wound. I’ll give you links to my two favorite videos on how to do this, as each machine is similar, yet slightly different. After viewing both videos, you should be able to do this on your machine:Video1: http://www.youtube.com/watch?v=GyjQir3b3xIVideo2: http://www.youtube.com/watch?v=i3ZMVFi0yqYI hope this helps. Best of luck to you.James

Read Full Q/A … : Ryobi