I own a McCulloch electric chipper/shredder model MCS2001 and for a while now I have not been able to get it running. Every time I plug it in and turn it on the overload protection switch (OPS) kicks in. It's run fine before, I've probably ran it for 6-9 hours in total over the past 3 years. My girlfriend's yard isn't that big but she has 23 trees growing and branches are always dropping off and I'd prefer to compost them instead of throwing them out for the trashmen to collect..oh and the leaves...all those leaves I have to collect. I'm a city boy and not used to all this yard work. Anyway some things I have done: Checked extension cord...it's heavy duty and it's worked before. Tried different outlets. Taken off the top cover assembly and ran it. Taken off top cover, v-blade AND shredder blades and then it runs fine. Then put blades back on and the OPS kicks in. Took it to an Authorized repair center but they didn't work on it because it's soo old and they can't get repair parts. So I have no idea what could be tripping the OPS and I'm hoping someone here has some thoughts or ideas. Thanks!
Overload protection is a euphemism for too much electricity going into the motor. That can only be caused by two things - 1 - the motor is not turning freely because of some restriction in the drive mechanism or 2 - some of the motor windings have shorted out and now the motor windings have less resistance than before and more electricity is entering and less back emf is being generated.
Condition 1 is repairable 2 - fogetit - motor is shot.
SOURCE: Mcculloch EM250-14 RPM Slowed suddenly
The chain must be properly sharpened to cut efficiently and the oil pump must be feeding oil to the chain/bar. Check the oiling by running the saw with the bar tip near some cardboard for a few moments--it should throw off a thin line of oil on to the cardboard. If not, remove the bar and chain and run the motor for a few moments--it should ooze oil out of a side port that exits near the drive end of the bar. If still nothing, check the oil tank filter for plugging, then the oil pump itself--it may have a plastic gear that has stripped it's teeth. Once you get oil from the side port, clean the oil passages in the drive end of the bar, and reinstall the bar and chain. Hope this helps!
SOURCE: McCulloch ES335 electric chainsaw whilst cutting a
In front of the handle on top of the saw is a hand guard. If in the course of cutting wood you hit it or pushed it forward, it will lock up the chain drive system. It should pull back towards the handle until it again clicks to release the chain. It's designed to lock up the chain drive and stop the chain when the saw kicks back.
SOURCE: mcculloch 35cc won't start has run before put in new plug ran for 2 min would not restart
Hi Burt597
Make sure you are getting spark at the spark plug, to do this:
Remove your spark plug and check to be sure you are getting a bright blue spark at the spark plug.
You do this by grounding the plug on the head of the engine and pulling the crank rope...watching the plug for spark.
If you are getting a nice blue spark then skip A below and go to B.
A...If you do not get a nice blue spark then you may need to replace the electronic module.
Note: If you have to replace the module be sure to measure the position it is in and be sure to install it in the same position
Normally the clearance is around .10 thousandsands
Also write the measurement down on a piece of paper for later reference, this measurement is critical to starting of the engine later.
B...Also take some fine grit sandpaper (not emery) and lightly sand the flywheel where the magnet is located to clean any rust or corrosion from the magnet area.
You can also try to lightly sand the module metal face to increase the possibility of ignition of the old module before replacement.
Please take time to rate me
Bud
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Sounds like you have dirt/debris in your caburetor jets,fuel passages or a diaphgram that is becoming non-flexible.
Check/Clean/Replace your Air Filter, a dirty air filter can make your engine run to rich with fuel.
Also be sure to check and clean your spark arrestor in the exaust,if you have one installed on your engine.
Note: ALWAYS USE COMPRESSED AIR TO CLEAN YOUR JETS AND PASSAGES, VERY IMPORTANT.
Note:Before you disassemble the carburetor:
Write down on a piece of paper or take a picture of how the linkage attaches to your carburetor for later reference when you go to reinstall your carburetor.
Mark each piece with a awl, or some kind of instrument that will make an alignment scratch before you disassemble the carburetor into separate pieces.
That way you will know which way it goes back together when you reassemble it.
Sometimes you can get by with priming the carburetor or by using a very small shot of starting fluid and letting it run a few times like that, and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.
Be sure to check your fuel tank for water and dirt/debris, if there is water/debris then you need to clean your tank.
Check you fuel line condition after a while they will degrade and need replacment.
Check/Clean/Replace your fuel filter if you have one, normally they are located in the fuel tank of chainsaws and weedeaters.
When you remove your fuel lines from the carburetor be sure to make a drawing to how the lines are connected to the carburetor or take a pictue for later reference.
Normally the big line will be the line the fuel filter is connected to inside of the tank.The smaller of the two lines is the return to the fuel tank from the carburetor after it is pumped thru the carburetor by the primer bulb.
Make sure you are using fresh fuel...and oil if your using a two cycle chainsaw or weedeater with the oil to the right mixture...too much oil as it can cause hard starting and excessive smoking.
If the chainsaw/trimmer is over a couple of years old, then I recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.
The diaphgram may look good and flexible, but it can be deceiving and not act as a fuel pump as it should because it has become too hard and will cause hard starting,start and run and shut off, etc.
When you clean your carburetor, I recommend that you use a laquer thinner type cleaner to clean and dissolve the laquer build-up in the float and needle jet passages.
Be sure to remove all plastic and rubber parts before using the laquer thinner because it can dissolve the plastic parts and render them unuseable.
Be sure to use COMPRESSED AIR to blow out all the fuel and air passages.The higher air pressure is needed to blow some of the trash/debris from the fuel or air passages.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
Keep in mind that the float (if you have one) for the carburetor must be level when you go to reassemble the carburetor or follow the instructions you get with the carburetor kit, or you could also ask the parts man that you get your kit from.
When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.
But before you lightly seat the jet screws count the number of turns it takes to seat the jet screws from their original position.
Be sure to mark the turns down on a piece of paper.
That way when you put the jets back in, you know to lightly seat them first and then turn them back out to their original position before you started.
Note:
The little spring inside of the carburetor goes under the float arm.
That is where your fuel inlet needle/float valve is located...on the arm at the end.
Normally there is a small indention in the carburetor base and a small protrusion on the underneath of the float arm where the spring will be in the right postion for installation.
The spring will set in the indention and you will install the float arm with the needle/float valve and float rod into position over top of the spring,you will push down until it is in position and then you can tighten the screw that holds the float arm assembly in position.
Once you have your carburetor cleaned/rebuilt that should solve your problem.
Please take time to rate me
Bud
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Have you checked the circuit breaker for the receptacle your using. Often they will trip easily when there is too small of a breaker, or the breaker is old. Otherwise if breaker is of sufficient size then one of the start up capacitors(some motors have 2)is faulty. Or the motor windings or field coils have a short. This causes the motor to fail under heavy load.
Have you checked the circuit breaker for the receptacle your using. Often they will trip easily when there is too small of a breaker, or the breaker is old. Otherwise if breaker is of sufficient size then one of the start up capacitors(some motors have 2)is faulty. Or the motor windings or field coils have a short. This causes the motor to fail under heavy load.
The only other thing is that the contact brushes may be worn out.
The motor windings are shorted or the brushes are worn out.
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