This is an original replacement part manufactured for use with handheld leaf blowers. The flywheel has magnets on its side that create an electric charge as the magnets pass the ignition module. The electric charge is sent to the spark plug to fire the air-fuel mix in the cylinder. The flywheel fits on the crankshaft by a key that aligns with a keyway on the crankshaft, this allows for proper firing timing. If the key on the flywheel is broken it can cause misfires or will not start at all. This flywheel is sold as an individual replacement part.
Flywheel Assembly 545221701
OEM part for: Poulan, Paramount, Weed Eater
Part Number: 545221701
Compatibility
This Flywheel Assembly will fit the following 495 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 495 matching models.
495 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Craftsman
- Husqvarna
- Jonsered
- Paramount
- Poulan
- Weed Eater
This item works with the following types of products:
- Blower
- Edger
- Hedge Trimmer
- Trimmer
This part replaces obsolete part #: 530054115, 545005101, 545197301, 530039149, 530039148, 530069886, 530071487
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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.
Key on flywheel sheered, causing a no start situation
Tool Type
Blower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set, Nutdriver, Torx driver
Parts Used
2. Remove impeller
3. Remove engine assembly from last of casing
4. Remove flywheel and replace
5. Reassemble in reverse as to assembly
Flywheel alignment key broke off
Tool Type
Blower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Wrench Set, Allen wrench
Parts Used
Flywheel key broke
Tool Type
Blower
Difficulty
Medium
Time
15-30 minutes
Tools Used
Socket set, Wrench Set, Hexagon tools
Parts Used
2. Use rachet set remove fan bolt from shaft.
3. Remove top with starter rope.
4. Remove flywheel and replace with new one.
5. Assemble in reverse order.
No start.......no attempt to start even with starting fluid. Compression was at minimums when I checked it.
Tool Type
Blower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Torx bits and allen wrenches
Bottom side of unit............remove 3 screws covering and protecting fan and set cover and screw aside. Hold fan and remove nut, lock washer and large flat washer. Set this aside also. Remove fan duct and nozzle (4 screws) and set it aside. Now all that is left is the lower housing (4 screws) Remove screws and housing and set aside.
Flywheel is exposed at this point and (in this order) you will find a space and washer (washer is next to flywheel. Remove them and set aside. Gently work flywheel back and forth.......a little lubricant between shaft and flywheel will help. Shaft is tapered so it will come off with a little effort.
Next I took the two allen head bolts holding the cylinder head on. Set them aside and remove head. I removed the piston and rod assembly due to over-heating and or lack of proper lubricant in fuel. To remove the assembly the "black" cover (2 screws) on rear if engine block will have to be removed.
To reassemble everything is reverse from disassembly. I used RED Loctite on the cylinder bolts and BLUE Loctite on the Fan Nut and shaft.
Main culprit I found was the piston ring was frozen to the piston and the cylinder was scored. Compression was dismal and what I suspected was proven once the unit was disassemble.
Make sure you have a good supply or Torx screwdrivers and bits (various sizes) along with a good Allen Wrench set
Don't forget to watch for the gasket behind carb. It will come lose and may wind up on the floor when you remove the carb. Same goes for the exhaust.
Leaf blower would not run
Tool Type
Blower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Adjustable Wrench
2.). I had to completely disassemble the entire blower because the screw was in the back.
3.). With everything apart, I went ahead and replaced all the gaskets from the kit.
4.). I sprayed WD-40 on the post going through the flywheel and let it set for a couple of hours. Using a bench vise and a rubber mallet, I was able to easily take the fly wheel off.
5.). I had to use some needle nose vise grips to grab hold of the remainder of the broken screw and eventually worked it loose.
6.). Reassembled all the hardware. I made sure, while taking it apart, to take detailed pictures with my phone. I used those pictures and the diagrams from replacements to make sure that I put everything back together properly. I had also placed the each part or associated screw in their own containers to help keep them organized.
7.). Leaf blower works great now. $20 in parts, a couple of hours of disassemble and reassemble and I am back in business.
flywheek key was stripped.
Tool Type
Blower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Power Drill, Socket set, Wrench Set
Parts Used
Flywheel key was damaged.
Tool Type
Trimmer
Difficulty
Easy
Time
1-2 hours
Tools Used
Screwdriver, Nutdriver
Parts Used
Flywheel
Tool Type
Blower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Power Drill, Socket set, Nutdriver, None
Parts Used
Coil and flywheel were both damaged due to debris
Tool Type
Blower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Nutdriver, Star Bits required
Parts Used
Damaged coil and cracked housing
Tool Type
Edger
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Wrench Set, Nutdriver
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All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
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