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It seems that YES a 56mm aftermarket cylinder is available for the Stihl 064. Looking at the kit you need to just replace Cylinder, Piston and rings, bearing bush and clips. Worth also replacing the base gasket too.
To replace the cylinder and piston is fairly straight forward. Take off the bar and machine top cover and starter pull cover. Remove the handle by removing the black plugs and undoing the anti-vibe springs. Remove the choke and throttle linkages and carb. Remove the exhaust and ignition module. Remove the 'E' clip, washer, clutch drum and roller bearing. The whole cylinder unit will now come out of the unit with a bit of fiddling to get the inlet manifold out. Remove the plastic ring and inlet manifold. Then undo the base of the cylinder unit and carefully pull out the crank and piston. Clean the top of the piston to understand which way round the piston has been fitted, There should be a little arrow showing the direction on top of the piston. The new one will have to go in the same way. With long nose pliers take out one of the spring clips holding the gudgeon pin in place and remove the pin to release the piston.
Refitting is a case of putting everything back in the reverse order. Be careful when refitting the inlet manifold to the cylinder as the small breather piece on the cylinder side must fit into the small hole in the cylinder block below the inlet manifold. If the manifold is more than a couple of years old it will probably be stiff and will need to be replaced!
I strongly suggest that as you take the thing apart you make careful not of what went where so you can refit it to the same location. Also when fitting the new piston into the cylinder lubricate it with oil to make it easier.
? 13:54
https://www.youtube.com/watch?v=jCbMCkGqCIQ
Dec 15, 2011 - Uploaded by Andy Reynolds
Refitting the cylinder to the rebuilt crankcase on a Stihl 026 chainsaw. ... Part 4: Stihl chainsaw piston and cylinder replace / repair. .... Part 3 Stihl 026 chainsaw fitting the rings, piston, anti vibration mountings - Duration: 15:10.
Dec 16, 2011 - Uploaded by Andy Reynolds
Part 3 Stihl 026 chainsaw fitting the rings, piston, anti vibration mountings ... Part 4: Stihl chainsaw piston and cylinder replace/ repair.
Remove the cylinder to expose the piston and rings,the rings should be lose around the piston, they should have a break in them so they can be removed and squeezed in to fit back into the cylinder
Power cutters run in a very dusty enviroment, if concrete dust passes the filter and enters the cylinder it will very quicky remove the plating on the cylinder and wear the piston skirt, once into the bearings it will destroy them, if the rings are badly worn ( remove them from the piston and check the end gap by entering them into the cylinder, if the gap is excessive you have had dust entering the cylinder )
It is possible to hone the cylinders and replace the rings to save the pump but don't remove too much metal as there are no oversized rings available for this type of piston/cylinder set. Also make sure to find out what caused the scoring in the first place and remedy that or you'll be replacing the cylinders and pistons next time.
Which model Stihl? If it indeed got so hot the engine seized you will almost certainly need a piston and cylinder. It will not be inexpensive. Was this saw perhaps operated in a lean condition (metal transfer from the piston to cylinder wall)? 1. Remove the spark plugwire and plug. Remove the muffler, hold a light at the plug hole and inspect the cylinder through the exhaust port. Is it smooth and shiny or does it appear speckled with dull gray spots or smears? 2. Pull the starter slowly, inspect the piston as it rises and falls. Is it a dull gray without scratches and gouges? 3. Hold the light at the exhaust port and look through the spark plug hole, inspect the cylinder above the exhaust port. Is it shiny and smooth or speckled with gray spots or smears? Any spots or smears on the cylinder or deep scratches and gouges in the piston indicate the saw was operated in a lean condition. Genuine Stihl parts are proprietary; you must purchase new parts through a Stihl dealer, I do not recommend used parts. Bailey's offers some OEM Stihl parts. What they offer can be viewed here: http://www.baileysonline.com/category.asp?catID=1666 HTH Lou
cylinder piston ring new carb was clean still wont start no gas coming.
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