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GT21 (1997-05) Jonsered Trimmer - Overview

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Fuel Line (25" Length) – Part Number: 530069247
$12.81
In Stock
Fuel Line (25" Length)
★★★★★
★★★★★
(5)
Part #530069247
This 25-inch fuel line carries fuel from the tank to the carburetor, ensuring proper engine operation. Made from durable clear plastic, it is designed to withstand regular use but may become clogged or brittle over time. Replacing a worn or damaged line can help prevent leaks and restore reliable starting and performance.
Engine Fuel Filter – Part Number: 530095646
$9.62
In Stock
Engine Fuel Filter
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(4)
Part #530095646
This Genuine OEM fuel filter is designed to maintain the performance and longevity of your equipment by preventing dirt and debris from entering the carburetor. Located inside the fuel tank, this essential component ensures clean fuel delivery, protecting the engine from potential damage caused by contaminants. Sold individually, the filter is built to meet original equipment standards for fit and function. Over time, the filter may become clogged, restricting fuel flow and making engine starts more difficult. For optimal performance, it should be replaced—not cleaned—at the first sign of blockage or wear.
Purge Line – Part Number: 530069216
$17.55
In Stock
Purge Line
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★★★★★
(2)
Part #530069216
This is the Genuine Craftsman replacement part. It is made out of Flexible Rubber and is Sold Individually. The purpose of the 530069216 Tank Purge Line is to return the excess fuel that is in the carburetor after the primer bulb has been pushed. The excess fuel is forced through the purge line back into the fuel tank. Over time the Tank Purge Line will become brittle and crack and will need to be replaced.
Fuel Line – Part Number: 530069599
$14.25
In Stock
Fuel Line
Part #530069599
This Fuel Line is a 25-inch, clear, plastic line used to deliver fuel. It requires a screwdriver, pliers, socket set, and nut driver and is rated as "Easy" to install by customers. If the fuel line wear out to the point of breaking, cracks and/or leaking will appear and the part should be replaced. Refer to your make, model and diagram to ensure this is the correct part for you.
Fuel Cap – Part Number: 530014347
$12.05
In Stock
Fuel Cap
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★★★★★
(1)
Part #530014347
The Fuel Cap with retainer, often simply known just as the fuel cap, keeps fuel from splashing out of your tank and debris from entering it. Black in color, it is sold individually and made of plastic. Because of everyday fatigue and wear, the cap can become damaged over time and must be replaced. You will know if it is time to replace your fuel cap if you notice visible damage or experience fuel leaking from it. You can make this repair by hand, just attach the cap directly back onto the fuel tank. Most of our customers found this repair very easy.
Flywheel – Part Number: 545221701
$39.55
In Stock
Flywheel
Part #545221701
This flywheel is an authentic manufacturer replacement part for use with lawn and outdoor equipment. The flywheel is a heavy, circular disc that has magnets that create an electric charge sent to the spark plug to create the spark that ignites the fuel and air mixture in the engine. It is attached to the engine crankshaft by a key known as a shear pin or flywheel key. This assembly is a critical component in the starting and running of your power equipment. Over time, the magnets on the flywheel will wear down, and the flywheel may chip and crack. A faulty flywheel will result in a loss of power, excessive shaking during use, and difficulty starting the equipment. Remove the flywheel using a flywheel puller. Position the new flywheel on the crankshaft and secure it with the retaining nut and flywheel key. This flywheel is sold as an individual replacement part.
Starter Spring – Part Number: 545008010
No Longer Available
Starter Spring
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★★★★★
(1)
Part #545008010
The Starter Spring is a metal spring used to restract the rope after you pull it to start the engine. Installation of this OEM part is rated as "Medium" difficulty and requires a screwdriver, nutdriver, and torx bit. The part is installed inside the recoil housing. If broken, the rope will not retract and the part must be replaced.
Piston Ring – Part Number: 545154001
$6.95
In Stock
Piston Ring
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(1)
Part #545154001
This metal ring in your engine, known as the piston ring, seals the gap between the piston and cylinder wall. It makes sure that the gases produced during combustion do not escape and that the engine maintains the pressure it needs to run. If the piston ring is damaged, oil can seep into the combustion chamber, causing your engine to exhibit rough idling and your machine emit blue smoke. To switch out a defective piston ring, detach the old ring from the piston with a screwdriver. When installing the new ring, you may need to compress it to make it fit properly. Please be aware that this genuine OEM replacement part is bought individually. It is recommended that you replace all the piston rings in your machine at once, as they tend to wear down at the same rate. Carefully review your user manual to determine how many rings your machine needs before placing your order.
Rope Kit – Part Number: 530069232
$7.65
In Stock
Rope Kit
Part #530069232
The chainsaw starter rope is a three-foot-long white rope that is approved by the original equipment manufacturer, and which wraps around the recoil pulley and is pulled to start the engine. Installation is rated as "Easy" by customers and requires a screw driver, pliers, and torx screwdriver. If the rope breaks it should be replaced. Refer to your make, model and diagram to ensure this rope is right for your machine.
Screw Catcher – Part Number: 530015814
$5.95
In Stock
Screw Catcher
Part #530015814
This is a standard hardware which has multiple applications based on your tool. It is sourced from original equipment manufacturer for use with a variety of power equipment. Please refer to diagrams for proper application. This screw is made out of metal and it is sold individually. Requires a hex key or an allen wrench to install or remove it.
Friction Disc,Clutch 36/41 – Part Number: 530015611
$7.65
In Stock
Friction Disc,Clutch 36/41
Part #530015611
It is a genuine item that is supplied by the original manufacturer for use with Poulan and Weed Eater chainsaws. This washer-clutch is a special friction disk that helps to engage the clutch by ensuring a right fit between connected components. It provides an identical replacement for a damaged or a missing hardware that was installed on a new unit. Check the diagrams of your model for the exact location and the correct installation of this part. One durable metal washer-clutch is included. You may need a screwdriver and a wrench set to perform this repair.
Screw-6-19x9/32 Pan/Sem – Part Number: 530016080
$6.72
In Stock
Screw-6-19x9/32 Pan/Sem
Part #530016080
This genuine replacement screw is a high-quality OEM part designed for use with Paramount and Poulan gas-powered lawn and garden equipment. It is specifically engineered to secure the starter rope within the pulley, ensuring reliable starting performance. Made from durable metal, this specialty screw is sold individually. Installation Tip: A flat-head screwdriver is required for removal and installation. For proper placement and application, please refer to your equipment’s model diagram.

Common Symptoms of the GT21

How this model fails, and the parts that fix it.

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Both the Fuel line and the Engine fuel line, where dry rotted.
55 of 73 people found this instruction helpful.
  • Victor from SCOTTSVILLE, KY
  • Very Easy
  • 15 - 30 mins
  • Pliers, Socket set
1) While still attached to the fuel tank, I first sized up the old fuel lines with the newer fuel lines.
2) With a pair of needle nose players, I then removed the old dry rotted fuel ?? lines, from the fuel tank.
3) I cleaned the fuel tank and around the carburetor area, to insure that there was no debris, that could possibly fa ll into the path of the new fuel lines installation.
4) I then installed the smaller one of the fuel lines, so that it would be out of the way, of the larger fuel line. I Pulled the fuel line through the smaller hole in the fuel tank, with needle nose players. I pulled the smaller fuel line out through the fuel tank filler hole, attached the fuel filter to the smaller fuel line. I Made sure that the fuel filter was extended to the furthest end of the fuel tank bottom. Six inches in all. I then attached the smaller fuel line to the carburetor.
5) I Installed the larger fuel line, followed the same procedures as the smaller fuel line.
6) Both fuel lines where cut on an angle for easy installation. No lubricant was necessary.
7) I filled up the fuel tank with fresh fuel and oil, new air filter and spark plug. It started on the first pull. Amazing.
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installing fuel through fuel tank wall
10 of 17 people found this instruction helpful.
  • RICHARD from BROCKTON, MA
  • Difficult
  • More than 2 hours
  • Pliers, Screw drivers
To start, remove the plastic carburetor grill. DO NOT remove the carburetor. The fuel line has to be sliced down to fit through the tank hole and get it in far enough up into the tank to grab with needle nose pliers.( need long needle nose pliers which I didn't have) I placed about six inches of the plastic tubing in the jaws of vice so t hat half of the tube was squeezed in the vice jaws. I then used a razor blade to shave off the exposed tube. I slipped the shaved end of the tube up through the tank hole far enough to grab with long tweezers and pulled it up to where I could grab it in the tank with needle nose pliers. I put light lube oil on the remaining tubing and pulled it through. It takes a steady firm pull to pull it in. Install the filter and pull the tube back down into the tank. I also used a small diameter drill bit and with my fingers slightly reamed the tube ends to ease the tube over the filter and carburetor nipples. To prime the engine, spray starting fluid into the carburetor and start. Repeat until the engine will run on fuel. It took me hours to figure this out, but will take less than an hour with this method.
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Broken fuel line
7 of 16 people found this instruction helpful.
  • Steve from SALEM, OH
  • Easy
  • 15 - 30 mins
  • Pliers
Removed broken fuel line from gas tank. Threaded new line into tank routed it to the carb and cut to length needed. Attached to the carb.
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