Easy
15-30 minutes
This item is a genuine Subaru/Robin part that is OEM sourced to ensure quality. The insulator is intended to be used with small engines. The insulator fits between the carburetor and the engine's intake port. The insulator is used to prevent damage to the carburetor that could be caused by engine heat. The insulator is sold as an individual replacement part.
Insulator 20A-32902-01
OEM part for: Subaru / Robin
Part Number: 20A-32902-01
$17.43
In Stock
Ships within 1 business day 
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Compatibility
This Insulator will fit the following 1200 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Subaru / Robin
Show More Compatible ModelsThis item works with the following types of products:
- Engine Parts
This part replaces obsolete part #: 277-43801-01, 227-32902-J1, 277-32901-J1, 277-32901-13, 277-32902-J1, 277-32902-H1
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I have not used the parts yet,but they appear to be the right parts
Parts arrived on time, will tell you how they fit and work when I get time to install them.
Michael -
April 27, 2021
Verified Purchase
Fit as described
The part was broken during shipping. It was still usable but could have been packaged better. Also it took a fairly long time to receive. I was notified that it was packaged and shipped the same day as ordered but it took the postal service over a week to get it to me in MO.
Guest -
August 3, 2019
Verified Purchase
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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.
Hard to crank. Then would run very rough, carburetor
RICK - June 17, 2016
👍 4 of 4 people found this instruction helpful
Tool Type
Engine
Difficulty
Easy
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Nutdriver
Parts Used
- Bowl Gasket - 214-62540-08
- Fuel Filter - X64-13600-10
- Gasket(muffler) - 277-35201-13
- Packing - 277-32604-08
- Union - 050-51200-20
- Needle - 277-62500-08
- Rocker Cover Gasket - 277-16001-23
- Gasket2(insulator) - 20A-35903-03
- Insulator Gasket - 20A-35902-03
- Cup - 277-62100-18
- Hose Clamp - X56-11100-60
- Insulator - 20A-32902-01
Remove the air cleaner assembly. ereplacementparts has a you tube video on this subject. Here it is https://www.youtube.com/watch?v=faM2nla4_u4 . Empty the fuel from the tank or use some tube clamp pliers to stop the flow of fuel. Remove the carburetor from the engine. Remember where the spring and throttle where located. Then start removing the parts from the carb. and laying them on a clean towel. Once all the parts are off, clean the carb. with carb, cleaner. I did use some fishing line to clean out the small passages. Once it was clean and dry, I started to assemble it. I replaced the needle, cup and bowl o-ring. Then installed the float bowl with the o-ring and bolt. Installed the insulator with the gaskets on both sides of it. I then installed the new union and all of the parts attached to it. I removed the muffler, then the gasket and cleaned the area before I installed the new muffler gasket.
Removed the rocker arm cover and replaced the gasket beneath it. Installed a new fuel filter in the tank. Then before I installed the air cleaner, I exchanged the old packing (gasket) for the new one.
Running great again.
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Carburator leaking gas between carb and engine.
Alton - May 10, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Engine
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Nutdriver
Replaced with new insulator and gasket. Solved the problem. Good fast service. Completely satisfied.
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Just needed new parts and they were not attached right
Matthew - October 28, 2022
Tool Type
Engine
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set
Cleaned carburetor, attached insulater, reattached to the engine, added new springs and completed assembly.
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The carburetor had the wrong gaskets on it causing it to suck air and lose power at full throttle
Nicholas - October 30, 2020
Tool Type
Engine
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Socket set, Gasket scraper
Removed the 2 nuts and one bolt using a 10mm socket from the air cleaner, slide the housing off
2.remove carburetor
3. Remove insulator
4. Peal off and use gasket scraper to clean up any old gasket material stuck to engine; insulator; carburetor; and air cleaner housing
5.install insulator gasket, insulator, carburetor gasket, carburetor, air cleaner gasket, and air cleaner housing; put the 2 nuts and 1 bolt to secure everything back down properly
2.remove carburetor
3. Remove insulator
4. Peal off and use gasket scraper to clean up any old gasket material stuck to engine; insulator; carburetor; and air cleaner housing
5.install insulator gasket, insulator, carburetor gasket, carburetor, air cleaner gasket, and air cleaner housing; put the 2 nuts and 1 bolt to secure everything back down properly
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Insulator was cracked on carburetor
John - July 24, 2020
Tool Type
Engine
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver
Parts Used
This didn't have anything to do with the starter rope. The insulator is between the engine head and the carburetor. It was cracked and sucking air into the engine. I replaced it by removing the carburetor. The insulator was sent with the exact gaskets to install it. Easy fix and my high pressure washer runs like new. Very happy.
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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.
