Medium
1-2 hours
This is an original replacement part sourced directly from the manufacturer. The unloader kit is commonly found in pressure washers from Briggs & Stratton. This part includes a plug made of high-quality plastic, a metal valve and spring, and two flexible rubber O-rings. You may require a wrench when replacing these parts.
Kit, Unloader 187879GS
OEM part for: Briggs & Stratton, Briggs & Stratton Engines
Part Number: 187879GS
$38.64
In Stock
Ships within 1 business day 
Compatibility
This Kit, Unloader will fit the following 33 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Briggs & Stratton Engines
Show More Compatible ModelsThis item works with the following types of products:
- Pressure Washer Parts
This part replaces obsolete part #: B1253GS, 97846GS
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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.
Engine stalled when trigger was released.
Howard - September 9, 2016
👍 11 of 11 people found this instruction helpful
Tool Type
Pressure Washer
Difficulty
Medium
Time
1-2 hours
Tools Used
Power Drill, Socket set, Dremel abrasive cutting disc for removing plastic plug.
Parts Used
1. Remove the plastic cap. This is easier said then done. Mine could not be turned so I had to drill and cut it out. The kit includes a replacement plug.
2. Remove the old valve spring and two brass valve parts. I was able to push them out by using a long bolt inserted through the outlet to the wand.
3.The valve chamber is likely fouled with mineral deposits. I put a cork in the outlet to the wand and filled the chamber with mineral remover overnight. I them checked to be sure the chamber was clean.
4. Insert the kit components.
5. Install the new plastic plug. This was difficult because you must use pressure to overcome the spring's resistance while insuring that the plastic plug is not cross threaded. I jury rigged a lever to apply straight pressure while I turned the plug..
2. Remove the old valve spring and two brass valve parts. I was able to push them out by using a long bolt inserted through the outlet to the wand.
3.The valve chamber is likely fouled with mineral deposits. I put a cork in the outlet to the wand and filled the chamber with mineral remover overnight. I them checked to be sure the chamber was clean.
4. Insert the kit components.
5. Install the new plastic plug. This was difficult because you must use pressure to overcome the spring's resistance while insuring that the plastic plug is not cross threaded. I jury rigged a lever to apply straight pressure while I turned the plug..
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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.
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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.
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