19-08-2022, 09:10 AM
Hi Andy
I can't answer your question directly, but here is an observation. Many of these carbs have spent some point in their lives laid up with some water in the bottom of the float bowl. This causes flaky corrosion of the Mazak, which you can clean off to some extent. However, I have a suspicion that similar corrosion occurs within the fine drillings and passages. The resulting deposits are extremely difficult to remove. I had one example which had been given the full treatment of soaking in solvent, blasting with a high pressure air line and cleaning with Arklone in an industrial ultrasonic bath. Despite all this it never really ran satisfactorily and the idling mixture adjustment did little or nothing.
I can't answer your question directly, but here is an observation. Many of these carbs have spent some point in their lives laid up with some water in the bottom of the float bowl. This causes flaky corrosion of the Mazak, which you can clean off to some extent. However, I have a suspicion that similar corrosion occurs within the fine drillings and passages. The resulting deposits are extremely difficult to remove. I had one example which had been given the full treatment of soaking in solvent, blasting with a high pressure air line and cleaning with Arklone in an industrial ultrasonic bath. Despite all this it never really ran satisfactorily and the idling mixture adjustment did little or nothing.