This chainsaw chain delivers efficient, smooth cutting performance for a variety of wood-cutting tasks. Designed with a narrow-kerf profile and semi-chisel cutters, it provides fast cutting while reducing strain on the saw. Built for durability and long-lasting sharpness, it helps ensure reliable operation. Replacing a worn or dull chain can restore cutting efficiency and improve overall performance.
Troubleshooting
This part works with the following brands:
Husqvarna
Part# 581643666 replaces these:
501840666, 608100145,
Customer Repair Instructions
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
A Bit Difficult
15 - 30 mins
(1 rated repair)?
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Sorry, we couldn't find any existing installation instruction that matched.
General wear & tear of clutch drive and chain drive area..
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 more4. 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).
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Stock Status
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
