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My problem is how to remove the petrol chain saw drive sprocket from the drive shaft

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There are a couple different ways. They make a special plug that goes into the cylinder to stop the rotation so you can loosen the sprocket or I have used an impact wrench to remove the nut. If you give me the brand and model I will look and see what I can do more to help you

Posted on Feb 26, 2009

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Posted on Jan 02, 2017

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My gear will turn without having the chain on . When chain is attached it the motor just works. No chain movement


I wasn't familiar with your saw but I looked at the parts diagram for it in the link below thinking there may be a replaceable drive pin or something like it that would possibly have sheared.
http://www.masterparts.net/111409-01.html
I didn't see any. That would indicate that the sprocket may be stripped out on the inside and would require replacement, or, that there is something stripped inside the gearcase. If you look at the diagram, the motor shaft is parallel with the handle. So to drive the sprocket gear that drives the chain, they use gears inside the housing to turn the sprocket that's at a right angle to the motor shaft. Do you follow me? It would appear from the parts diagram that if it is those internal gears, that it would require replacement of the whole motor/gear assembly ...... probably as expensive as a whole new saw!

The reason that the sprocket turns without the chain on is that there is evidently enough friction between the shaft that the sprocket mounts on, and, the sprocket. But not enough of a connection to drive the chain.

To check further, leave the saw unplugged, and use your finger to try to turn the sprocket. If it turns by hand like that, it would indicate that something is stripped out as I said. To see if it is the sprocket, remove the "Retaining Ring, 5/16" that is shown in the diagram, and inspect the inside of the sprocket. If that appears good, then it would be an internal problem and probably not worth fixing.
Good luck!
Ed

Oct 31, 2013 | Remington 111409 - 01 6" Branch Wizard...

Tip

Drive Hub Assembly Replacement for Stairmaster 4000PT Stepper


Stairmaster Stepper Drive Hub Assembly Replacement
  1. Remove the side covers.
  2. Remove the step chain retainers.
  3. Supposrt the pedal arm. Unhook the pedal arm return spring from the spring hanger. Lift the step chain up and off the clutch sprocket and lower the pedal arm to the floor. Repeat on the other side.
  4. Remove the snap ring from the left end of the drive shaft. WARNING: To reduce the risk of eye injury, wear eye protection when removing snap rings.
  5. Remove the drive chain.
  6. Remove the sprocket and other small parts from the left side of the hub assembly.
  7. Slide the drive shaft to the right, out of the hub assembly. If you remove the right-hand clutch sprocket form the drive shaft, do not confuse it with the left-hand clutch sprocket.
  8. Loosen and remove the two remaining bolts and nuts that hold the hub assembly to the frame. Remove the hub assembly.
  9. Inspect the drive shaft, bushings, thrust washers, and clutch sprockets for excessive wear or pitting. Replace any worn components.
  10. To reinstall the hub assembly, carefull reverse the disassembly procedures. Be sure that the right- and left-hand clutch sprockets are positioned correctly; the wide shoulder of the sprocket should be facing away from the hub on both sides.
  11. Chain Tension. The drive shaft is mounted in an eccentric hub. Rotate the hub so the marked hole is in the 12 o'clock posistion, lining up four holes in th hub with the four holes in the frame. Use this hub position when reinstalling the drive chain since the distance between the drive and the transmission shafts is at a minimum. The hub is in the proper position when the drive chain has a total of 1" to 1-1/2" of play, up and down, at the slackest point in the chain. If it is necessary to increase the tension or tighten the chain, rotate the hub counter clockwise until the chain has proper tension.
  12. Reinstall the covers.

How to Repalce the Drive Hub Assembly on Stairmaster 4000PT

on Feb 25, 2015 | Stairmaster 4000PT Stepper

1 Answer

How do i set camshafts on 1999 duvil northstar


Remove camshaft covrs
Remove front cover
Remove or fully retract all three timing chain tensioners
Remove oil pump
Primary and secondary chain guides should remain in place. Rotate crankshaft until sprocket drive key is at about 1 o'clock position.
Set crankshaft and intermediate shaft sprockets into primary drive chain with their timing marks asjacent to each other.
Install crankshaft and intermediate sprockets over their respective shafts. Rotating crankshaft as necessary to engage crankshaft key in sprocket without changing the timing mark relationship.
Install Flywheel Holder Tool (J-39411) to lock crankshaft in position. Install intermediate shaft sprocket retaining bolt and torque to specifications.
Route secondary chain for left cylinder head over inner row of intermediate shaft teeth.
Route secondary drive chain over chain guide, and install exhaust cam sprocket to chain so camshaft drive pin engages the sprocket notch marked "LE" (Left Exhaust).
There dhould be no slack in the lower section of the chain, and the camshaft drive pin must be perpendicular (90 degrees) to the cylinder head surface.
Install the intake camshaft sprocket into the chain so the sprocket notch marked "LI" (Left Intake) engages camshaft drive pin, while drive pin remains perpendicular to the head face. Minor adjustments can be made to camshaft position to get pin to engage by using a wrench on the hex cast into the camshaft.
Install sprocket retainer bolts and torque to specification.
Repet steps as above to install the right secondary chain to the right camshafts. The right camshaft sprockets are marked "RE" and "RI". In addition, the RE sprocket must contain the camshaft position sensor pickup.

May 27, 2012 | 2000 Cadillac DeVille

1 Answer

Motor runs, but chain does not move


check to see if the chain is on the sprocket to do this you will probably have to remove the side cover on the saw if chain is on sprocket and still will not move then you may have a sheared key in the key way if this saw has one, if it does you should be able to see the key way on the end of the shaft coming out of the motor. there should be a nut that holds the sprocket in place if that nut is loose and the shaft is splined instead of having a key way the the sprocket could slip while the motor is turning.

Feb 25, 2011 | Remington Electric Chain Saw

1 Answer

Motor runs but chain doesnt


Remove the bar and chain, then inspect the drive shaft and sprocket for broken or missing parts. If the shaft turns, then the transmission is probably ok. If the shaft doesn't turn, then the gear box has a failed component. Hope this helps!

Sep 08, 2010 | Makita 5012B Electric Chain Saws

1 Answer

Start procedure for chainsaw ncr 4550


The header says that this is an electric saw which doesn't have a start procedure--just push the button and it runs. Electrics also don't have a clutch because the motor doesn't need to continue running when not cutting like a fueled engine does. Most electrics, however, have a safety device that uncouples the chain drive sprocket from the drive shaft to protect the gearbox. Remove the bar and chain, then look for a broken/disconnected drive link or spring connected with the sprocket. If the shaft itself does not turn, then there is likely problems in the gearbox. Hope this helps!

Jun 03, 2010 | Ryobi 18-inch Electric Chainsaw Chain Saws

1 Answer

I have a Troy Built electric chain saw that has ceased to function, The motor runs strongly but the chain will not move. hat do I do?


Does the sprocket drive shaft turn when the sprocket does not? If so, look for broken coupling between the shaft and the sprocket. If the output shaft doesn't turn, then suspect a damaged (probably plastic) gear within the gearbox. Hope this helps!

Jun 02, 2010 | Troy-Bilt Troy Bilt 18" Chain Saw Repl...

1 Answer

Saw will not cut , chain stops turning when chain touches wood


If your saw has a removable sprocket, Check the drive sprocket on the clutch drum. Either the the spline is worn or the drive link on the chain is not properly seated in the sprocket well.

Apr 09, 2009 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

3 Answers

Mccullough chain saw pm610 chain slips -- maybe clutch issue


have you greased your clutch bearing ever.some times they get dirty and tighten up after running a while.pull your clutch off and clean and grease bearing with a little alex grease,and I mean just a few drops.not meant to have a lot of it,too much will burn the crank shaft and you will have more problems then you started with

Jan 01, 2009 | Garden

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