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Randakk carb rebuild video errors Video copyright 2006 This document 12-4-2020 |
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Pretty obsessive about keeping cylinder-oriented parts together. | An experienced mechanic knows the difference between parts that need to go back together in original orientation and those that don't. There is almost nothing on a carburetor that is like that. |
Mistakes float bowl vents for vacuum circuits. | The brass tubes on the air filter side of the GL1000 carburetor are float bowl vents. This is automotive technology. |
Not enough emphasis on float bowl screw threads. | One of the top three issues on these carbs is stripped float bowl screw threads. Repairing them is part of a rebuild, and the issue begs for advice on prevention. |
Fails to warn about bypass pucks falling out. | Unlike all other Honda carburetor models, the idle bypass port covers ("pucks") on the GL1000 carb bear careful attention because they easily fall out. |
Uses pliers on float pivot pins. | You never want to do this. It ruins the pins and increases the chances of snapping off the pivot posts. |
Calls air bleeds "vacuum ports". | They're not. They are air bleeds. |
Calls mesh screens "flame traps". | Nope. They are hardware traps. |
Promotes rebuilding carbs while leaving them in their two banks. | This is a false benefit. You cannot get to everything that needs attention if the carbs are not completely disassembled. |
Relies on compressed air to confirm circuit cleanliness. | Professional rebuilders use liquid, not air, to confirm circuit flowability. |
Very cheap, Harbor Freight type screwdrivers in evidence. | Carburetors not only demand high quality screwdrivers, they even require custom-ground ones. |
Doesn't grease o-rings. | A peculiar oversight. |
Tightens plenum screws by hand. | The Phillips screws that bolt the air chamber ("plenum") together need gentle tightening by impact. |
Suggests testing ignition coil secondaries cap to cap. | This is incorrect. The caps are tested separately and the coils are tested separately. |
Promotes Marvel Mystery Oil, most harmfully as a vacuum top lubricant. | First, it is no good and actually harmful to the engine. Second, it also is bad for the carbs as it hastens carbon formation. |
Does not grease linkages. | Minor, but it needs to be done. |
No grease or glue on plenum center gasket. | The plenum center gasket benefits from a slight amount of sealer or grease. The plenum halves are not perfectly machined and their surfaces are very narrow. |
Does not press in idle air bleed elbows. | The brass idle air bleed holding elbows fall out of the carbs unless they are properly pressed in. |
Calls GL1000 ignition coils "anemic". | They are not. They were actually used as hot rod coils on Honda inline fours back in the day. |
Says felt throttle shaft seals are not available. | The felt seals became available before this video was produced. Motorcyclecarbs.com (now out of business) in Atlanta had them. Since then several sources have also emerged. |
Says dip cleaning carbs ruins felt seals. | This is not so. |
Bolted down manifolds before attaching cables. | Bad technique. The cables and the aircut valve are much easier to install with the manifolds not yet bolted down. |
The vacuum gauges shown have water contamination. | One of the drawbacks of using mercury manometers. |
No torque wrench use in evidence. | Very unfortunate. The manifold bolts in particular need a torque wrench. |
Fails to blip throttle between sync adjustments. | This is known and practiced by every knowledgeable mechanic. |
Uses an incaccurate method of measuring float level. | The most accurate method is with the carbs in their operating orientation, i.e. right-side-up. |
Overly-agressive vacuum top bronze bore burnishing. | While the bronze bores in the vacuum tops do need to be cleaned, burnishing them heavily is ill-advised. You don't want them to become looser-fitting. |
Describes tops and slides as factory matched. | This is a fallacy. Just because Keihin (and therefore Honda) made them available only as a set does not mean they were "matched". |
For more powersports maintenance fallacies, see this article.
More book critiques: Julian Ryder, Mark Paris, Sean MacGregor
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