Manufacturer facts
- 399 cc liquid-cooled four-stroke single with fuel injection and CVT. These figures describe the linked 2022 catalogue. (2022 SYM catalogue)
Top repairs for the SYM Maxsym 400
The jobs that keep a scooter bike like this safe and running, from rider checks to workshop jobs. These are routine maintenance and common checks for this type of bike, not a ranking of faults.
- Pre-ride checkRider job · 2 min daily; 10 to 15 min weekly
- Check tyre pressureRider job · 5 min
- Inspect tyres for wear and damageRider job · 10 min
- Check wheel bearingsHome workshop · 15 to 30 min
- Change the engine oil and clean the strainerHome workshop · 40 to 60 min
- Clean or replace the air filterRider job · 15 to 40 min (estimate, plus drying time for foam)
- Check variator rollers and slidersHome workshop · 45 to 90 min
- Inspect and replace the scooter drive beltHome workshop · 45 to 90 min
Check your version first. Confirm that it uses CVT; verify belt dimensions, roller specification, final-drive oil and brake types. Use the values in your bike's manual.