After much mucking around I noticed a hole in the top shroud of the shaft. I placed a narrow screw driver through the hole until it made contact with the rotating part of the head and pushed until the head would not turn. I thern applied pressure clockwise until the head became loose. I did the reverse to tighten. The head of the unit will rotate anti clockwise to tighten as the shaft rotates clockwise during operation. I hope this explains the method.
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Mate you lawn mower has to be a two stroke ok, In Australia a two stroke lawn mower mix is 25 to 1 and a whipper snipper is 50 to 1 and the grade is just two stroke oil......... Have a look at this link....
the motor you are working on has a split block and you have to take the motor off and remove the bolts holding the two halves of the block apart. this motor doesn't have a separate removable head. it is cast as two pieces and in my opinion makes more work for some repairs. hope this helps
There are many things that can cause this. If it is a rotary mower and you hit something hard with the blade that causes it to stall, the flywheel can move on the shaft. This means the ignition timing is now off. You have to remove the shroud and the pull starter to see the flywheel. This is easy to do with 3 bolts. Lift the shroud and you should see the shaft and the fly wheel. The flywheel is keyed to the shaft. The key will bend and the slots wont be lined up.. Another thing to check is the gap between the flywheel and the magneto. The gap is about the same as a business card thickness. Last but not least is the fuel system and the magneto itself.
The best thing to do would be to remove the broken one and take it to the local mower shop and tell them you need to replace it. There is generally only 3 or 4 different types of bulbs and they suit a whole range of mowers / chainsaws / whipper snippers etc. The guy at the shop shouldn't even need to know what brand mower it came off.
Just google "mower parts gold coast" there is a heap of them on the Gold Coast.
Sometimes, there is a waxy substance in the fuel tank and fuel lines that is put there by the manufacturer to prevent deterioration during storage. Machines may sit in a store for months / years before getting sold. I would get some fuel cleaner and flush the tank and fuel lines , then put some fresh fuel in the tank. I had to do this with a brand new whipper snipper. Had the same problem.
Use a large pry bar...your fingers won't do it, neither will a screwdriver (need leverage)...you can use the same nut that holds the flywheel on, just screw it down til the nut is flush with the shaft. You want to be hitting the "shaft' in the center, using the nut to prevent the hammer from damaging the thread. So you want to be hitting the nut & shaft as one surface. Take notice that there is a "key" holding the flywheel in position on the shaft, don't loose it !!