Medium
30-60 minutes
This brake puck in your lawn tractor or ride-on mower is located within the brake assembly near the transmission or the wheels of the machine. It presses against the brake disc to slow down or stop the machine when the brake is engaged. Over time, the brake puck can thin out. If you notice reduced braking power, difficulty stopping the equipment, or a squealing noise when applying the brake, the brake puck needs replacement. To replace it, consult your user manual for instructions specific to your model. Begin by engaging the emergency brake and using wheel chocks to prevent the tractor from moving. With the help of a jack, disassemble the brake assembly, exchanging the worn brake puck for the new one. Make sure to reassemble all components properly and test the brakes before using the equipment again. This genuine OEM replacement part is sold individually, so ensure you purchase the required quantity for your equipment. It is recommended to replace them all simultaneously, as they tend to wear out at similar rates.
Puck-brake 917-0678
OEM part for: MTD, Ryobi, Yard Machines
Part Number: 917-0678
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This Puck-brake will fit the following 21537 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
This part replaces obsolete part #: HG-44132, 717-0678P, 7170678, 717-0678
Customer Part Reviews ?
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Questions & Answers ?
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Does this fit my product?Questions & Answers for Puck-brake
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.
No Brakes. When the mower was in Fwd or reverse it would move and could not be stopped. The idler pulley had also seized and was binding up the drive belt.
Tool Type
Lawn Mower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set
Lawn mower transmission defective.
Tool Type
Lawn Mower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Wrench Set
Just replaced old parts
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set
Parts Used
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
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.
