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Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)
Article Breakdown
Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)
Tools & Materials
String trimmer out of whack? It's time to face the fix. Whether you are a legendary landscaper or a weekend weed whacker, eReplacementParts.com provides the parts, procedures and facts you need to fearlessly fix what fails you.
The intake insulator acts as a buffer between the carburetor and the engine block. Its primary purpose (as the name suggests) is to insulate the carburetor against heat from the engine. Without this insulation, the carburetor would become as hot as the engine, and vapor-lock would occur.
Over time, it's possible for the intake insulator to crack. This will allow air into the engine, creating a lean condition. Fortunately, replacing the intake insulator is easy to do.
This article provides step-by-step instructions for removing and installing the intake insulator on an Echo SRM-225 trimmer.
Let's get started.
REMOVING THE INTAKE INSULATOR [top] 1. Remove the air cleaner assembly.
Loosen the thumb screw.
Remove the air cleaner lid.
Remove the air filter.
2. Drain the fuel (optional).
Drain the fuel before servicing the unit.
3. Remove the intake assembly.
SPECIFIX: The intake assembly (as described in this article) includes the air cleaner bracket, air cleaner case, carburetor, and the intake gasket. All of these components are secured to the engine by the same screws. While it is not necessary to disconnect the throttle cable or fuel lines (from the carburetor) to complete this repair, be aware that the carburetor may fall away from the intake assembly when you remove the screws.
Loosen the (2) bracket retaining screws.
Remove the air cleaner case (along with the bracket and the screws) from the engine.
Separate the carburetor (if it has not already become separated) from the insulator.
Locate and remove the intake gasket. (This gasket is situated between the carburetor and the intake insulator block.) Typically, the gasket will fall away from the two components as they are separated. Sometimes, the gasket will remain affixed to either the carburetor or the intake insulator block.
4. Remove the insulator.
Remove the (2) retaining screws.
Remove the intake insulator block from the engine.
INSTALLING THE NEW INTAKE INSULATOR [top] 5. Install the intake insulator.
Install the two nuts into the recesses on the back of the new insulator block.
Note that there is a small opening (beneath the main intake port) on the bottom of the insulator block. This opening should align with the small opening beneath the intake port on the engine.
Thread the mounting screws through the holes in the new intake insulator block. This will help align the assembly during installation.
Install the new intake insulator block onto the engine.
Secure the intake insulator with the (2) screws.
REASSEMBLING THE UNIT [top] 6. Reinstall the intake assembly.
Thread the (2) mounting screws through the mounting holes on the air cleaner bracket and the air cleaner case. The bracket should be flush against the interior of the air cleaner case (on the same side as the choke valve).
Thread the screws (protruding from the air cleaner case) through the holes on the carburetor assembly.
Note that there are two small holes on the intake gasket (besides the main intake opening and the two mounting holes). These small holes need to align with the small hole on the insulator block.
Thread the screws through the mounting holes on the intake gasket and slide the gasket flush against the carburetor.
Install the intake assembly (bracket, air cleaner case, carburetor and intake gasket) onto the intake insulator block.
Secure the intake components (bracket, air cleaner case, carburetor and intake gasket) with the screws.
7. Reinstall the air filter.
Install the air filter into the air cleaner case.
8. Reinstall the air filter lid.
Install the air filter lid onto the air cleaner case.
Secure the air filter lid with the thumbscrew.
You don't have to leverage your savings to level your lawns. As you just learned, repairing your own equipment is easy when you follow our step-by-step guides. Not only did you restore trimmer functionality at a fraction of the cost of replacement; you have taken the edge off of future repairs, wherever you may find them.