Part Location Diagram of 531166601 Husqvarna Arm Idler 42
See part G-55 in the diagram
( Grid squares measure 1x1 inch )

Arm Idler 42 531166601

Manufactured by:
Husqvarna
ERP Number:
ERP18201962
Part Number:
531166601
Original Equipment Manufacturer ?
$28.56
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

30 - 60 mins 

(5 rated repairs) ?

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Product Description

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This is a genuine OEM supplied item that is made for riding lawn mowers and garden tractors. It is a high-quality replacement for a damaged or a missing idler arm that was installed on a new unit. Refer to the owner's manual and the appropriate diagrams for your model to ensure the proper repair procedure. Note, this high-quality idler arm is made of durable metal and is sold as an individual item. A wrench set will be needed to perform this repair.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Husqvarna
  • Jonsered
  • Poulan
  • Weed Eater
  • Craftsman
  • Ariens
  • Murray
  • American Yard Products
  • Ryobi
This part works with the following products:
  • Lawn Tractor
  • Lawn Mower
Part# 531166601 replaces these:
532155046,

Questions & Answers

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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.

A Bit Difficult 

30 - 60 mins 

(5 rated repairs) ?
  • 1
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Sorry, we couldn't find any existing installation instruction that matched.

Blades would not dis-engage, engine had to be turned off and manually dis-engage.

Jimmy from Pensacola, Florida

10 of 10 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Socket set, Wrench set
I removed deck from mower so I could see moving parts better. I am 73 years young and laying on my side looking under mower was not my cup of tea. Upon removing deck I could see the results of 11 years of use. The parts were worn extremely bad and were hanging up and not releasing the Idler pulley when moving lever to dis-engage blades . I should have ordered 2 Arm assembly Pad Brake but as it turned out one was not worn as bad as the other. The job was relatively easy. Just removed spring tensions first and laid them aside. Proceeded to remove nuts from carriage bolt. Put new parts on and put deck under mower. Mowed an acre of grass and had no problems. On a parts quality note..... The Arm Assembly pad Brake has a bolt on end that has a roller on it that is used in the disengage mode. On the original arm it was a thru bolt with nylon lock nut. The new one is just pressed in and I think it should have been spot welded where it come thru the arm. Only time will tell. If a person has a welding machine I would highly recommend putting a spot weld there as that bolt at times will have a lot of pressure on it as it slides around the edge of idler arm.
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Lawn mower blades could not be disengaged.

mlchael from holly springs, North Carolina

4 of 4 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Socket set, Wrench set
Parts Used:
531166601, 532188655, 532169022
1. Removed mower deck.
2. Removed pulley that attaches to the idler return spring.
3. Removed old worn idler arm.
4. Installed new idler arm, pulley and deck.
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Worn and needed replaced

RICHARD from NORTH BRANCH, Michigan

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
531166601
1. Removed mower deck
2. Removed arm idler
3. Cleaned and greased arm idler area
4. Installed new arm idler
5. Installed mower deck
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Mower deck was hard to clutch in and out

louis from cleveland, Texas

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Socket set
Parts Used:
531166601, 531168401, 532139888
Dropped the mower deck
Removed the idler
Removed and replaced the brake arm assembly and the idler and associated washers
Replaced the idler arm and the brake arm assembly
Do not lubricate any of the replaced parts. Oil will contaminate with dirt and wear out quickly!!
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Belt kept coming off

Ruth from Salem, Wisconsin

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Socket set, Wrench (Adjustable)
Parts Used:
531166601, 531165901
Replaced belt guard
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP18201962
Manufacturer Part Number: 531166601
Brand Model Number Description
Husqvarna 130 Lawn Tractor - Ride Mower
Husqvarna 1342 Lawn Tractor - Ride Mower
Husqvarna 1342C Lawn Tractor - Ride Mower
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Husqvarna 1542XPG Lawn Tractor - Ride Mower
Husqvarna 1742A Lawn Tractor - Ride Mower
Husqvarna 1742B Lawn Tractor - Ride Mower
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Husqvarna 1842 Lawn Tractor - Ride Mower
Husqvarna 1842A Lawn Tractor - Ride Mower
Husqvarna 1842B Lawn Tractor - Ride Mower
Husqvarna 1842C Lawn Tractor - Ride Mower
Husqvarna 18542 Lawn Tractor - Ride Mower
Husqvarna 18542A Lawn Tractor - Ride Mower
Husqvarna 18542B Lawn Tractor - Ride Mower
Husqvarna 18542C Lawn Tractor - Ride Mower
Husqvarna 2042 Lawn Tractor - Ride Mower
Husqvarna 2042A Lawn Tractor - Ride Mower
Husqvarna 2042B Lawn Tractor - Ride Mower
Husqvarna 2042C Lawn Tractor - Ride Mower