AK 550
KYMCO AK 550 CVT Belt Replacement: Steps and Factory Parts
Replacing the CVT drive belt on the KYMCO AK 550: the belt, both case gaskets, and the CVT cover filter element, with the factory part numbers.
Opening the CVT on the AK 550 is a straightforward job with one rule: never reuse the gaskets. A CVT that breathes dust eats belts, so the case gasket, the cover gasket, and the cover's filter element go on the parts list next to the belt itself. The belt lives on your model's E07 Transmission diagram; the covers and gaskets are on E05 Right Crankcase Cover: open your exact year to see the exploded views with every bolt.
- TimeAbout an hourthe cover bolts differ in length: keep them in order
- Factory parts4belt, two gaskets, the cover filter
- The one ruleNew gasketsa CVT that breathes dust eats belts
- DiagramE05 Right Crankcase Cover · Shaft Main · Shaft CounterAK 550i Premium ABS (2026)
The factory parts for this job
| OEM part number | Fits | Models | |
|---|---|---|---|
 |
11305-LGC6-E00 | AK 550 (2021 to 2023, 2025), AK 550 ST (2026), CV3 (2023, 2026) | 19 |
 |
11350-LGC6-E00 | AK 550 (2021 to 2023, 2025), AK 550 ST (2026), CV3 (2023, 2026) | 19 |
 |
11394-LGC6-E00 | AK 550 (2021 to 2023, 2025), AK 550 ST (2026), CV3 (2023, 2026) | 19 |
 |
23100-LGC6-E00 | AK 550 (2021 to 2023, 2025), AK 550 ST (2026), CV3 (2023, 2026) | 19 |
The diagrams for this job
The belt, the covers and their gaskets are drawn on these diagrams for the newest AK 550 in our catalog; open one to see every bolt position.
E05 Right Crankcase Cover · Shaft Main · Shaft CounterOpen the diagram →
E07 Transmission PulleyOpen the diagram →
The job, step by step
- Get to the CVT cover. Scooter secure on the center stand, then out with the cover bolts, noting their lengths and positions as you go; several differ. The E05 diagram shows every bolt position if you lose track.
- Inspect before you swap. Check the old belt's sidewalls for cracking and glazing and measure its width against the wear limit in your service manual. Look at the variator and clutch faces for scoring while they're exposed.
- Fit the new belt. Match the rotation-direction arrows to the old belt. Never lever a belt over the pulleys with tools; open the driven pulley by hand instead.
- New gaskets, always. Fit the new case gasket and cover gasket, and swap the cover's filter element, which is the CVT's air filter.
- Torque and test. Tighten the cover bolts progressively in a cross pattern to the torque in your service manual, then ride gently for the first few miles while the belt beds in.
How to confirm fitment for your exact model
Model names repeat across years and regions, so the safest way to order the right CVT part is to confirm it on your model's own diagram:
- Find your machine. Pick it on the All Models page, or decode your VIN with the VIN lookup to land on the exact model year and colour.
- Open the diagram. The exploded views mirror KYMCO's factory fiche; the diagram cards on this page show which drawing the CVT part sits on.
- Match the number, then order. Check that the number on the diagram matches the row in the chart, then follow it to the product page on kymcopartsstore.com, where the part is ordered.
If a part number has been superseded, the product page shows the replacement, so you always receive the current factory part.
Belt intervals, plugs, oil and the rest of the AK 550 service figures, each with its part number, are on the KYMCO AK 550 service specs sheet.
Sources
- Part numbers and fitment: KYMCO's factory parts catalogue, the same exploded-view diagrams as our parts diagrams.
- Service intervals, torque and capacities for your exact model and year: KYMCO USA owner's manuals. Where this guide and your manual differ, the manual wins.