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Discussion Starter · #21 ·
just thinking logically. i have dealt with many damaged seals and if you can't find a good used one off another machine it generally sucks to spend $20 on a seal kit when you can get a complete carb.
Ok mr Spock! Actually, I was thinking similarly, that’s why I wanted to try. It went from no start to one pull start. And I saved all the originals from other machine recently, so might as well give them a try. You’re right, if I need new seals all around, much easier just to go new.
 

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Ultrasonic can damage internal organs,
 

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I have a unit retired from a dentist's office. It has a heated unit built in. It does clean most carbs.

However I occasionally find that it will not break up everything in small passages, most notably anything that is crystalized. It also has trouble with carbs that have gas/oil so old that it has turned to a tar like substance.
 

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For small parts or to conserve cleaning solution, place the parts covered in solution in a zip sealed plastic bag. Put the bag in your cleaner filled with plain water. Turn on and presto, change-o, clean parts without having to toss a bunch of cleaning solution. The ultra sound travels through the plastic bag into the part in the cleaning solution.
 

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I have a unit retired from a dentist's office. It has a heated unit built in. It does clean most carbs.

However I occasionally find that it will not break up everything in small passages, most notably anything that is crystalized. It also has trouble with carbs that have gas/oil so old that it has turned to a tar like substance.
To test the functionality, hang aluminum foil in the solution, turn the ultrasonic cleaner on, holes should appear in the aluminum foil. If not, it's broken.
 

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I've never heard of this. Is this what you use?
We used SC52 Cleaning Concentrate, which is moderately acidic & formulated to strip metal oxides and metallic coatings. Cleaning Solution SC52
You could run virtually any ferrous or nonferrous metal through it without damage...
  • May be used on all ferrous and nonferrous metals:
    • Aluminum
    • Iron
    • Brass
    • Copper
    • Pewter
    • And other metals
I believe the Extreme Simple Green® Aircraft & Precision Cleaner is similar.
 

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1981 Canadian tire “mastercraft” made by MTD with tecumseh engine HM-80 1155334N
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I sprayed carbs with carb cleaner > Took apart and soaked in berrymans carb cleaner > ultrasonic cleaner w/ simple green purple > rinse/dry > reassemble with new carb kit = my 1981 blower and 1998 mower start on the first pull. (Blower is started via electric start but it fires up instantly).

both machines get trufuel or aspen exclusively.
 
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