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Husqvarna Parts

Pinion 503931801

OEM part for: Husqvarna, Jonsered

Part Number: 503931801


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Pinion - 503931801:Husqvarna 360 View
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Easy 15-30 minutes (4 rated repairs)?
OEM: Original Equipment Manufacturer ?
HusqvarnaJonsered
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Product Description ?

This pinion is available as an individual replacement part. It fits between the needle bearing and the pump piston. The pinion is made out of metal and plastic and will need to be replaced if it breaks. A screwdriver may be needed when replacing this part. This is an authentic replacement part for chainsaws made by Husqvarna and Jonsered.

  • Classification: Part
  • Weight: 0.01 lbs.
  • Shipping: Ships Worldwide

Frequently Purchased Together ?

Compatibility

This part will fit the following 65 machines

Husqvarna

445 (2007-03) Chainsaw View Diagrams & Manuals
445 (2007-09) Chainsaw View Diagrams & Manuals
445 E (2007-03) Chainsaw View Diagrams & Manuals
445 E (2007-09) Chainsaw View Diagrams & Manuals
450 E (2007-03) Chainsaw View Diagrams & Manuals
450 E (2007-09) Chainsaw View Diagrams & Manuals
340 (2001-09) Chainsaw View Diagrams & Manuals
340 (2004-03) Chainsaw View Diagrams & Manuals
340 (2005-05) Chainsaw View Diagrams & Manuals
340 (2006-06) Chainsaw View Diagrams & Manuals
340 (2007-01) Chainsaw View Diagrams & Manuals
340 E (2005-05) Chainsaw View Diagrams & Manuals
340 E (2006-06) Chainsaw View Diagrams & Manuals
340 EPA (1999-09) Chainsaw View Diagrams & Manuals
340 EPA (2003-01) Chainsaw View Diagrams & Manuals
340 EPA (2004-03) Chainsaw View Diagrams & Manuals
345 (2001-09) Chainsaw View Diagrams & Manuals
345 (2004-03) Chainsaw View Diagrams & Manuals
345 (2007-01) Chainsaw View Diagrams & Manuals
345 E (2005-05) Chainsaw View Diagrams & Manuals
345 E (2006-06) Chainsaw View Diagrams & Manuals
345 EPA (2003-01) Chainsaw View Diagrams & Manuals
345 EPA (2004-03) Chainsaw View Diagrams & Manuals
350 (2001-09) Chainsaw View Diagrams & Manuals
350 (2004-03) Chainsaw View Diagrams & Manuals
350 (2005-05) Chainsaw View Diagrams & Manuals
350 EPA (2003-01) Chainsaw View Diagrams & Manuals
350 EPA (2004-03) Chainsaw View Diagrams & Manuals
345EPA (1999-09) Chainsaw View Diagrams & Manuals
450 (2011-07) Chainsaw View Diagrams & Manuals
450 (2010-09) Chainsaw View Diagrams & Manuals
445 E II Chain Saw View Diagrams & Manuals
445 II Chain Saw View Diagrams & Manuals
450 E II Chain Saw View Diagrams & Manuals
450 II Chainsaw View Diagrams & Manuals

Jonsered

2141 (2000-08) Chain Saw View Diagrams & Manuals
2141 (2001-09) Chain Saw View Diagrams & Manuals
2145 (2000-08) Chain Saw View Diagrams & Manuals
2145 (2001-09) Chain Saw View Diagrams & Manuals
2150 (2000-08) Chain Saw View Diagrams & Manuals
2150 (2001-09) Chain Saw View Diagrams & Manuals
CS2141 (2003-01) Chain Saw View Diagrams & Manuals
CS2141 (2004-03) Chain Saw View Diagrams & Manuals
CS2141 (2007-01) Chain Saw View Diagrams & Manuals
CS2141 EPA (2004-03) Chain Saw View Diagrams & Manuals
CS2145 (2003-01) Chain Saw View Diagrams & Manuals
CS2145 (2004-03) Chain Saw View Diagrams & Manuals
CS2145 (2007-01) Chain Saw View Diagrams & Manuals
CS2145 EPA (2004-03) Chain Saw View Diagrams & Manuals
CS2150 (2003-01) Chain Saw View Diagrams & Manuals
CS2150 (2004-03) Chain Saw View Diagrams & Manuals
CS2150 (2007-01) Chain Saw View Diagrams & Manuals
CS2150 EPA (2004-03) Chain Saw View Diagrams & Manuals
CS2245 (2008-09) Chain Saw View Diagrams & Manuals
CS2245 (2009-02) Chain Saw View Diagrams & Manuals
CS2245 (2010-07) Chain Saw View Diagrams & Manuals
CS2245 (2011-07) Chain Saw View Diagrams & Manuals
CS2245 S (2008-09) Chain Saw View Diagrams & Manuals
CS2245 S (2009-02) Chain Saw View Diagrams & Manuals
CS2245 S (2010-07) Chain Saw View Diagrams & Manuals
CS2245 S (2011-07) Chain Saw View Diagrams & Manuals
CS2250 S (2008-09) Chain Saw View Diagrams & Manuals
CS2250 S (2009-02) Chain Saw View Diagrams & Manuals
CS2250 S (2010-07) Chain Saw View Diagrams & Manuals
CS2250 S (2011-07) Chain Saw View Diagrams & Manuals
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This item works with the following types of products:

  • Chain Saw Parts
  • Saw Parts

This part replaces obsolete part #:

Customer Part Reviews ?

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  • easy to order and quick service. Thank you!
    Just what I needed!
    Guest - November 11, 2020 Verified Purchase
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    t - t days ago Verified Purchase
    eReplacementParts Team
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    Questions & Answers for Pinion


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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.

    Easy 15-30 minutes (4 rated repairs)?

    Chainsaw oil pump and pinion stripped

    Zachary - December 10, 2020
    Tool Type

    Chain Saw

    Difficulty

    Easy

    Time

    Less than 15 minutes

    Tools Used

    Screwdriver, Socket set, Piston plug, hammer, flat cold chisel

    Husqvarna 450E x torq
    1.Removed top cover of motor
    2.Removed spark plug
    3.Removed bar and chain side cover, and removed bar and chain
    4.Used a piece of 0.375” rope, pushed inside of spark plug hole to keep piston from cycling.
    5. Take hammer and flat cold chisel and knock clutch loose.
    6. Remove clutch, sprocket, needle bearings, pinion.
    7. Use screw driver to remove deflection plate.
    8. Remove oil pump
    9. Reassemble with new parts in reverse order.
    Did you find this story helpful?
    Thanks for voting and helping fellow customers!

    Husq 445e - chain continued to spin at idle - pinion galled to crankshaft

    Ralph - October 11, 2019
    Tool Type

    Chain Saw

    Difficulty

    Easy

    Time

    Less than 15 minutes

    Tools Used

    Screwdriver

    Removed clutch cover, bar and chain, clutch and drum, plate covering oil pump, then removed oil pump pinion, pump piston and pump cylinder.
    Installed replacement parts and re-assembled saw.
    Did you find this story helpful?
    Thanks for voting and helping fellow customers!

    Oil pump not functioning, nylon pump gear was stripped. Replaced pinion also due to wear.

    John - April 22, 2018
    Tool Type

    Chain Saw

    Difficulty

    Easy

    Time

    15-30 minutes

    Tools Used

    Screwdriver, Pliers, Nutdriver, Torx bit

    Removed bar and chain, removed clutch assembly, removed oiler plate, removed and replaced pinion and pump.
    Also cleaned everything of debris before reassembly of the unit.
    The ereplacement parts worked flawlessly, thank you.
    Did you find this story helpful?
    Thanks for voting and helping fellow customers!

    No chain lubrication

    Greg - February 12, 2018
    Tool Type

    Chain Saw

    Difficulty

    Medium

    Time

    15-30 minutes

    Tools Used

    Screwdriver, Torx bit (to remove side cover), spark plug wrench

    1 Removed chain,cover and bar
    2 Removed recoil cover
    3 Large end of spark plug wrench securely in vice other end on nut in middle of recoil (to hold so chain sprocket and clutch can be removed from other side of the saw)
    4 Remove plate (1 screw)
    5 Remove oil pump piston,pinion and oil hose
    6 Reinstall new pump piston, pinion and oil hose and reverse steps 4,3,2 and 1
    Did you find this story helpful?
    Thanks for voting and helping fellow customers!

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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.

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