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Ion 11733 ION 8 inch 015944 2013
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The 2013 Ion 40V series was the pioneer of the electric ice auger movement. At over a decade old, these original green models typically require attention in three specific areas: battery cell degradation, the shear bolt assembly, and blade geometry.
Before performing any maintenance, ensure the battery is disconnected to prevent accidental activation.
Required Tools and Supplies
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Socket Set: Specifically 8mm and 10mm.
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Allen Wrench Set: Metric.
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Lithium Grease: For the drive shaft and planetary gears.
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Multi-meter: For testing battery output and trigger continuity.
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Wire Brush: To clean oxidation from battery terminals.
Phase 1: The Cutting Head and Blades
If the auger spins but "skates" on the ice without biting, the issue is almost always the blades or the centering point.
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Blade Inspection: The 8-inch Ion uses two straight blades. Even a microscopic chip or a slight change in the mounting angle (from hitting a rock or the bottom) will stop it from cutting.
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Replacement: Use an 8mm socket to remove the two bolts holding each blade. Always replace both blades at the same time to maintain balance.
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The Centering Point: The 2013 model relies on a threaded centering point. If this is dull, the auger will wobble before starting the hole. Sharpen the point with a fine-tooth file or replace it if the threads are stripped.
Phase 2: Drive Train and Shear Bolt
If the motor hums or spins but the auger drill bit does not turn, the shear bolt has likely broken. This is a safety feature designed to protect the motor when the bit hits an obstruction.
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Locate the Bolt: The shear bolt is located at the connection point between the powerhead output shaft and the auger bit.
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Removal: If the bolt has "sheared," you may need a punch and hammer to drive the remaining piece out of the shaft.
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Replacement: Use only a grade 5 or specific Ion-branded shear bolt. Using a standard high-strength stainless steel bolt can prevent the "shear" action, which may lead to a burnt-out motor or shattered gears if the bit jams.
Phase 3: Battery and Electrical Maintenance
The 2013 model year batteries (Gen 1) are prone to "cold-soaking" where the voltage drops significantly in sub-zero temperatures.
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Terminal Cleaning: Use a wire brush or fine sandpaper to clean the copper contact points on both the battery and the underside of the powerhead. Oxidation here causes resistance and "stuttering" under load.
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Voltage Check: A fully charged 40V Ion battery should read approximately 42V on a multi-meter. If it reads below 32V immediately after a full charge cycle, one or more internal cells have failed.
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Trigger Continuity: If the auger won't start at all, unscrew the handle casing. Check the two wires leading to the trigger switch. These can vibrate loose over time. Re-solder if necessary.
Troubleshooting Table
| Symptom | Probable Cause | Fix |
| Auger stops under load | Battery "Cold-Soaking" or weak cells. | Keep battery in a chest-warmer or replace cells. |
| Grinding noise in head | Planetary gear grease is dry/contaminated. | Open gear case, flush with solvent, and re-grease. |
| Wobbling during cut | Bent main shaft or loose centering point. | Inspect shaft for trueness; tighten centering point. |
| Motor runs, bit is stationary | Broken shear bolt. | Replace with Ion-specific 6mm shear bolt. |
Gearbox Lubrication (Advanced)
If the auger has seen heavy use since 2013, the factory grease in the planetary gear system may have broken down.
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Remove the bolts securing the bottom plate of the powerhead (where the shaft exits).
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Slide the gear assembly out.
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Wipe away the old, darkened grease.
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Apply a liberal amount of Low-Temperature Synthetic Grease. This is vital; standard automotive grease will thicken in the cold and bog down the electric motor.
Storage Tip: For the off-season, do not leave the battery on the charger. Charge it to approximately 60% (2 or 3 lights), remove it from the powerhead, and store it in a cool, dry place. Charge it once every three months to maintain cell health.

