Clutch Drum Assembly 505441501

1. Remove chain and bar.
2. Remove spark plug and insert short length of rope (enough to stop the piston from completing a stroke) leaving enough to grip for removal latter.
3. Place punch on outer portion of clutch assembly but inside the clutch drum and strike with hammer to loosen/unscrew clutch (counter-clockwise).
... Read more 4. Remove clutch, drum and worm gear assemblies.
5. Install new parts in reverse order they were removed.
6. On Cover use screwdriver to remove screw on worn cover lid, remove and replace.
Notes: Use safety glasses if using compressed air to blow off debris, disposable gloves are recommended, and remove rope from cylinder before replacing spark plug (it was only used to keep the piston from reaching top of stroke so that the clutch assembly could be unscrewed and screwed back on).

1.Remove chain cover
2. Remove bar and chain
3.use hammer and screwdriver to loosen clutch
4. Grease roller bearing and install
5 install new drive sprocket
6 replace clutch
7. Replace chain and bar
8. replace chain cover

Remove chain guard and chain and bar itself. Remove the sparkplug and make sure the piston is at bottom of cylinder. push a line of 1/4 to 3/8 rope into the cylinder until it won\'t go no more, leaving enough out so removing it will be easy. turn the engine clockwise until the piston is tight against the rope. Use a flat punch and ... Read more small hammer to tap the worn out sprocket so it turns clockwise. The thread if opposite of a common bolt thread. The sprocket should quickly come loose and spin off. remove the old needle bearing and grease the new one and place it on the shaft, spin the new sprocket onto the engine shaft and tap it in place. Turn the engine enough to loosen the rope and remove the rope. Replace the spark plug and assemble the bar, chain and chain guard. Tighten chain properly, add fuel and chain oil and start the saw up, it should work great.

I replaced them and check if oil pump is working.
My chainsaw is good condition now.

1. removed side plate, bar and chain.
2. removed spark plug and inserted rope in cylinder to block piston to prevent crankshaft from turning.
3. used hammer and punch to loosen clutch assembly.
4. greased bearing and installed new clutch drum/sprocket.
5. installed bar and chain and replaced clutch cover.

Took the chain and bar off the saw.
Removed the drive sprocket/ clutch assembly.
Removed the oil pump drive.
Cleaned all parts and reassembled.
Tested saw and got ready to cut firewood

To remove the clutch assembly, I had to take the spark plug out and put about 3 inches of starter rope in the cylinde ... Read more r to lock the piston in place.
I used a hammer and punch to spin the clutch off the crankshaft. (left hand threads)