This is an authentic OEM sourced replacement piston ring used on gas Trimmers and blowers. A worn or broken piston ring will allow combustion gases to escape the seal and enter the crankcase, causing low compression and a loss of power. If compression is reduced significantly, the engine will not run at all. This part is made out of metal and is sold individually.
To complete this repair you will need a set of wrenches, pliers and a screwdriver.
Piston Ring 545154001
OEM part for: Poulan
Part Number: 545154001
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Product Description ?
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This Piston Ring will fit the following 483 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Poulan
Show More Compatible ModelsThis item works with the following types of products:
- Trimmer Parts
This part replaces obsolete part #: 5300551-20, 530055120, 530049903
Customer Part Reviews ?
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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.
Very low compression. The piston ring broke into 2 pieces.
Tool Type
Blower
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Ring Compressor, Allen Wrench
Parts Used
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.
Blower wasn't getting compression
Tool Type
Blower
Difficulty
Hard
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set
2. Tested compression
3. With the poor compression, went to look at piston closer and broke piston ring in the process which must have been weak to begin with.
4. Ordered new piston rings and gasket kit to replace all the gaskets since engine assembly was taken apart.
5. Put together remaining assembly
6. Applied high temperature adhesive and let cure over a few days
7. Tried starting the blower and it ran great!
Would not start, no compression
Tool Type
Blower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Allen wrenches, ring compressor
Parts Used
2 Removed cylinder head
3 Removed old piston ring
4 Installed new piston ring
5 Reassembled and reinstalled engine
Piston ring stuck. No compression.
Tool Type
Blower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set
Parts Used
no compression
Tool Type
Blower
Difficulty
Expert
Time
30-60 minutes
Tools Used
Screwdriver, torx drivers
Parts Used
Low cylinder compression, carburetor fowling
Tool Type
Hedge Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Allen wrench and T-handle
Removed the carburetor and spacer, held in with two screws. Removed and replaced paper gaskets.
Removed the exhaust and heat shield, held in with two screws. Replaced exhaust gasket
Removed the cylinder, held in with two machined screws. Replaced rubber base gasket
Removed piston assembly and ring.
Cleaned and checked the piston and cylinder bore for gouges. Removed and replaced cylinder ring.
Reassembled in reverse order.
No compression
Tool Type
Blower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, allen wrench
Parts Used
removed old piston ring
cleaned piston ring groove
installed new piston ring
reassembled blower
low compression
Tool Type
Blower
Difficulty
Easy
Time
30-60 minutes
Tools Used
, dont remember tourqe drive size.
Parts Used
Old, Used, and bolts loosened over time.
Tool Type
Blower
Difficulty
Medium
Time
1-2 hours
Tools Used
, Torq tips
Steps:
clean parts swap the new o-rings/gaskets and the new piston ring,, lock tight bolts and hope they hold over time.
Note: piston ring breaks during disassemply so just pick it out and take a broken piece to use to scrap and clean the ring groove.
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased 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.
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.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.