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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Final update: Used high tack gasket compound on both mating surfaces and the gasket. Torqued head bolts to around 70 ft-lb which is low to spec but felt one bolt begin to strip so stopped. Motor is not running super smooth when throttle is wide open but is working fine without additional head...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    After surfing the internet for a bit on this, I see that some folks are using gasket sealing compound on both sides of the gasket prior to reassembly. Should I be using some gasket sealing compound? I figure at this point with this old of an engine, perhaps using some gasket sealing compound...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Update: The mating surface on the motor has two holes, one on both sides of the cylinder head, located directly under the gasket. The hole on the side of the cylinder head that the gasket tore/failed went completely across the gasket width based on the indention in the gasket. On the other side...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Well, the new head gasket came in. I loosely turned down the six bolts by hand and then gradually tightened the bolts in a crisscross fashion starting with bolt at 6 o'clock - then 12 o'clock, then 2- then 8, then 10-then 4 until the head compressed the gasket and the bolts were tight. I then...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Well, I’m fairly confident that all the remaining issues I that I have been having are related to the gasket leak and not the SSI. Aldo, bought a compression tester so I will be able to do a compression check once the new head gasket arrives and I get it installed.
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    It appears that the motor has solid state ignition. At least I won’t need to be concerned with condition of points, point gaps and all that. Attached is a photo showing the ignition system.
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    I believe I have identified one of the last remaining issues (hopefully). The air hissing sound I was hearing when rotating the flywheel was air passing under and through the first engine gasket on the spark plug side of the motor. If I can find the gasket, replacing the bad one should be...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    During the process of removing the flywheel I heard an air noise from the engine as the piston moves up and down in the cylinder when rotating the flywheel. Is the normal for these kinds of engines?
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Ok brim, I am in the process of tearing down the top end to check the points and have ran into a couple things one of which I didn’t expect. Firstly, I haven’t figured out how to keep the fly wheel from rotating in order to loosen the fly wheel nut. The manual refers to a special tool that I do...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    I have not yet checked the points. Not sure on the process to do this as yet. The float has been set set/calibrated correctly. Spark is solid. It is not sucking air that I can determine. I am using a Sears remote gas tank model number 217.59730/1 with a primer bulb in the fuel line. There is a...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Follow up: There is no high speed mixture adjustment screw/bolt on this model carburetor. I assume that this is a model with high speed mixture fixed. I will keep digging.
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Brim, the motor is running decent at slower speeds but seems to lose power and runs rough with throttle wide open. Based on your input I see that there is a high speed mixture adjustment on the bottom of the carburetor cup. I will work on that to tune the engine based on information that I have...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Hey brim buster, it worked!!! Never in my wildest dreams would I have thought an all metal needle valve seating against a metal valve inlet WITHOUT a rubber seat of any kind would get the motor running but poof, it did. Motor runs slightly rough but not enough to stop me from putting it on the...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Found the model number label on the motor. It is 217-58820.
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    I purchased the kit on Amazon and it is found here: https://www.amazon.com/dp/B07CSQGMNJ?psc=1&ref=ppx_yo2ov_dt_b_product_details I believe that I got the AV817 out of an Eska Mechanics Manual but after looking at the manual again tonight I am not sure why I got that except that to say...
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    Sears Eska 7.5 HP Carburetor Parts and Running Issues

    Hello everyone, I posted in another thread and was advised to start my own thread instead so here goes. I have a Sears-Eska 7.5 HP Motor AV817-640-02, Tecumseh Carburetor P/N 631648. I am looking for an Inlet Viton Tipped Needle Valve P/N 631505 and a small inlet valve spring P/N 631506. I have...
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    eska carb rebuild kit?

    While this is a super old thread, I thought I would give it a shot anyway. Sears-Eska 7.5 HP Motor AV817-640-02, Tecumseh Carburetor P/N 631648. I am looking for an Inlet Viton Tipped Needle Valve P/N 631505 and a small inlet valve spring P/N 631506. I have been unable find these two parts for...
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