Medium
30-60 minutes
It is a genuine manufacturer-approved part which is specially designed for Ryobi and Husqvarna riding lawn mowers and garden tractors. The purpose of the switch-interlock is to act as a safety feature which will shut the engine off when equipment is started or running in unsafe operating conditions. Unfortunately, over time parts will wear out and it may begin to fail eventually requiring a replacement. Refer to the owner\'s manual and the appropriate diagrams for your model for the correct location and installation of this component. Note, this high-quality plastic body interlock switch is sold individually. You will need a screwdriver to perform this repair.
Interlock Switch 532176138
OEM part for: Husqvarna, Ryobi
Part Number: 532176138
$17.43
In Stock
Order within the next 3 hours and your part ships today! 
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Frequently Purchased Together ?
Compatibility
This Interlock Switch will fit the following 4389 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
This item works with the following types of products:
- Lawn Tractor Parts
- Lawn Mower Parts
This part replaces obsolete part #: 5321536-64, 532153664, 176138, 153664
Customer Part Reviews ?
Average Rating (out of 5):
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Exact part
Very fast shipping...easy to install...great company to deal with
Guest -
July 1, 2022
Verified Purchase
Part worked great.
The part arrived quickly and I am very happy with the service.will definitely use E parts for all my parts.
Guest -
May 13, 2022
Verified Purchase
Deck Safety Switch
The blades would not engage when PTO switch was activated. Unit would stall as a safety precaution. I was quite difficult to access due to manufactures placement. Works well again now.
Theodore -
February 20, 2021
Verified Purchase
Great part
Fit perfectly.
Guest -
November 11, 2020
Verified Purchase
Easy repair
Right part right price fast friendly customer service nice to talk to humans
Guest -
August 18, 2020
Verified Purchase
Part worked fine
Parts arrived as expected. Wish it did not take so long, but shipped from Utah to PA. Reasonable time for the distance. And repair complete.
Guest -
August 3, 2020
Verified Purchase
Great parts Great Service!
Great Part Fit Perfectly, Part Arrived Very Fast, Great Customer Service that was so helpful, The only place we will buy parts from now on! Really Cares about the Customers need!
Robert -
May 21, 2020
Verified Purchase
Great service!! Easy
Parts was exactly what I ordered, came quickly, and fixed my problem right away!! Thank you.
Guest -
April 26, 2020
Verified Purchase
Excellent
The staff is knowledgeable and efficient and parts arrive in a very timely manner I tell my Engineer friends on the way to go
Guest -
March 18, 2020
Verified Purchase
Worked great
Back in business.thanks
Guest -
August 28, 2019
Verified Purchase
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Interlock Switch
Being a dummy. I installed the battery backwards in a dark lit place without my glasses on. I guessing I blew the in-line fuse when I tried to start. Your thoughts and suggestions.
Clinton
for model number 960430239
asked on 2023-05-29
Hello Clinton, Thank you for the question. The Fuse for this model is listed as Part Number: 532175158. We hope this helps!
eReplacementParts Team May 29, 2023
Will fit my YTH24V48 mower
Stephen
for model number 44R8877
asked on 2023-05-29
Hello Stephen, Thank you for writing. Yes, this is the correct Switch for the model number provided. We hope this helps!
eReplacementParts Team May 29, 2023
I have a Hasqvarna YTA 18542riding mower. There is Briggs&stratton 540cc single valve engine s/n 06051355076 I need to replace the wire from the bottom of the carburetor bowl to the fuse panel.Engine will not start and this wire melted can you tell me the part#. Also do you recommend replacing the plunger inside the bowl?
Thomas
for model number 060513ZD55075
asked on 2022-03-17
Hi Thomas,
Thank you for your question. Before we can provide you with the wire for your engine, we will need the model number from it. The model number on a Briggs and Stratton engine will be found near the air filter, the spark plug, or the muffler. If you could resubmit your question with this information, we would be happy to help you. We are open 7 days a week. We look forward to hearing from you!
eReplacementParts Team March 17, 2022
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.
Clutch/brake interlock switch bad
herb - July 12, 2016
👍 15 of 20 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Hard
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, jack
Parts Used
Removed hood side plate, mower deck, two rods to access switch. Break tabs on switch to remove. Put all back together,worked great. Thanks for your help.
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Safety switch was bad
Tim - April 30, 2018
👍 7 of 10 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
Parts Used
Test electrical systems , found faulty switch replaced with new switch purchased from your company, worked perfectly.Highly recommend.
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Intermittant pto blade switch
Peter - November 11, 2015
👍 6 of 8 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Pliers
Parts Used
Helps to remove gas tank, (one on each side of tank) lay that to one side. Move blade lever to upright position and lock it in. Remove connection from bottom of switch. (Pry out lock tab outward with thumb or small screwdriver and pull down). With channel lock pliers squeeze both tabs in and push up to remove switch. Repeat procedure in reverse to re- install switch. About 15 minutes. time to complete.
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Lawn mower would not start. No spark noted during diagnosis.
William - July 27, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Wrench Set
Removed the engine shroud on top of the engine. Ignitions and diode immediately underneath with. 5 bolts loosened freeing the ignitions and diode. Ereplacenent makes it very easy to order parts at reasonable prices.
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Replaced the two blades and the interlock switch for the ignition.
Joel - March 28, 2016
👍 4 of 7 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Wrench Set
When you order your blades, the items shows a 38 inch blade but the price is for just one blade. Had to order another blade but all went well on the repair. Replaced blades with a wrench and a good strong hand. Used a screw driver to slip the old switch out and replace with the new one.
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No juice to the starter
paul - July 20, 2022
Tool Type
Lawn Mower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Wrench Set, multimeter
Parts Used
I had to do some testing to determine which switch was bad. Turned out to be the blade switch. Extra time was for testing and the fact that you have to remove the battery and its tray to get at the brake/clutch switch to test it. It works now. Yay
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Would not turn over, damaged mower deck
Anthony - June 19, 2020
Tool Type
Lawn Tractor
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Power Drill, Socket set, Wrench Set, Nutdriver, Multimeter, pop riveter, drill press
1. Removed battery and disassembled tray.
2. Placed battery on footrest and reconnected.
3. Diagnosed starter system (see Sears video with Wayne).
4. Removed mower deck.
4. Removed brake interlock switch.
5. Ordered parts.
6. Fabricated patch and reattached mounting point on mower deck.
7. Installed interlock switch, and addition parts to overhaul.
8. Reinstalled mower deck, battery tray and battery.
2. Placed battery on footrest and reconnected.
3. Diagnosed starter system (see Sears video with Wayne).
4. Removed mower deck.
4. Removed brake interlock switch.
5. Ordered parts.
6. Fabricated patch and reattached mounting point on mower deck.
7. Installed interlock switch, and addition parts to overhaul.
8. Reinstalled mower deck, battery tray and battery.
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Mower would not startt
Arthur - June 1, 2020
Tool Type
Lawn Tractor
Difficulty
Hard
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Wrench Set
Parts Used
Removed two interfering parts that were above the mower deck so i could remove interlock switch, then easily removed the switch, and installed the new switch. plugged in electric harness, refastened interfering parts.
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It wouldn't do anything when key was turned in the crank position.
Eric - June 1, 2020
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Nutdriver
After installing all the safety switches and still nothing, I noticed that the voltage meter wasn't moving when I turned the key so I reached my hand back to wiggle the wires and it cranked right up. I guess it had grounded the mower.
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Interlocking switch shorted and so did the seat switch
Al - April 9, 2020
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Wrench Set
Pulled the interlocking switch and the seat switch and replaced it. Works great
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Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
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.
