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go google and type in --workshop manual for craftsman trimmer -- and down load any pdf version for it
in reality most centrifugal clutches for trimmers work the same so any one manual for any make would give you insight on how to do it if craftsman don't supply a pdf version for download
Hole in the end of the clutch housing where the cable slides in has a # 20 torx screw in there.
Pull the spark plug, stuff some rewind
starter rope in the plug hole, use a water pump pliers and turn off the
clutch plate(s). NOTE: curved shaft trimmer will be a standard
right-hand thread, straight shaft will be a left-hand thread.
You can find parts breakdowns for the unit HERE, it also has the part numbers in case you need to order anything.
It looks like the starter engages the flywheel directly. I have not taken one of these apart so I cannot give you the best advice.
You can't remove the motor shaft from the front. That is NOT what you are trying to do anyway. Here are all the steps you need to take to get to the pull start assembly which is located inside the front cover. Torx head screws are used exclusively on these but you may be able to grab some of the fasteners with a flat-blade screwdriver. I'm not sure if you have removed the clutch drum (has the screw that backs out but doesn't come out) so here you go. 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 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 dull flat-blade chisel and hammer unless there are bolts. then use 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.
It does unscrew from the shaft. The Torx screw holding it is hidden and doesn't come out of the housing once it is loosened. It is screwed into the end of the shaft. You will have to keep the engine from turning to loosen it. Pull spark plug out and move piston to bottom of stroke. Put some nice, soft, clean rope in the cylinder and let the piston compress it when you turn the Torx screw in the clutch rotor housing.
The clutch may be worn out and need replacing. The driveshaft may be broken. The gears in the trimmer head may need replacing. Or the drive shaft is not fully seated in the trimmer engine when put back together. Look at some of these suggestions. Good Day.
I believe there is a t20 trox screw holding the clutch cover on. Look down the hole where the drive shaft would insert. After you get that off, the clutch itself needs to be pulled off of the shaft. DO NOT BEAT ON THE END OF THE SHAFT. You may need a small puller to get it off.
Hi I have a craftsman 4 cycle model no. 316.791970 gas trimmer. When I pull on the rode there is little resistance . I took the sparkplug out and put a flash light down the hole and there is a thing that is moving . What should I look next, or do you know what is wrong? Thanks for any help! I've had it only 3 years and already Sears have replace the clutch assy.