Aixro XR50, Руководство по эксплуатации

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© Aixro GmbH / Woelfle Engineering GmbH 16/23
7. SERVICE AND MAINTENANCE
Engine service is due once a year or every 50 hours of operation (whichever comes first).
Have the engine serviced by an approved dealer, the American distributor RENNtech, or the
Aixro factory to maintain warranty for the engine.
A normal overhaul usually includes a check to make sure the engine components are still in
good condition. Sometimes it may become necessary to replace bearings. Otherwise no fur-
ther service is necessary, so the XR50 requires remarkably less maintenance than other
karting engines.
Under normal use the only parts requiring regular maintenance are the clutch, chain, and air
filter. Keeping the engine clean and free from dirt and oil is considered part of a proper main-
tenance routine.
If you do not dare to maintain the clutch, or you do not have the proper tools, you should con-
tact your dealer to ensure the work is done correctly.
! Always keep your kart and engine clean. This makes it easier to discover defects.
! Improper clutch assembly can damage the engine. In the worst case parts can even fly
off the engine and cause serious injuries.
7.1. Clutch Bearings / Drive Sprocket
Depending on the wear of the clutch, it is necessary to grease the clutch bearings on a regu-
lar basis. We recommend an interval of 1..2 hours of operation. Use high-temperature bear-
ing grease and a (Aixro) clutch wrench. When disassembling the clutch, check the condition
of the drive sprocket and replace it if necessary.
1.
Remove the clutch cover and note the locations of the different screws.
2. Hold the clutch in place using the clutch wrench, and release the 22mm clutch nut.
3. Release the rear sprocket or the engine clamps, so the sprocket is not retained by the
chain when you pull it off.
4. Pull the clutch off the eccentric shaft. Be careful not to lose the small clutch key.
5. Lay the clutch aside with the drive sprocket facing upward.
6. Lift the sprocket off the clutch. It can now be replaced if necessary.
7. Grease the three-piece axial bearing (bearing in a cage with two washer discs).
8. Also grease the bearing in the sprocket and the running surface on the clutch.
9. Slide the sprocket back over the clutch.
10. Grease the eccentric shaft and slide the clutch onto the shaft.
11. Insert the clutch key into the keyway. It will only fit one way.
12. Hold the clutch in place using the clutch wrench, and tighten down the clutch nut.
13. Re-attach the clutch cover.
14. Re-attach the rear sprocket, or bolt down the engine clamps.
15. Check the chain tension in different positions of the rear axle.

Once you have a feeling for the appearance of a worn drive sprocket, you do not need to re-
lease the rear sprocket or the engine clamps, unless you want to replace the sprocket.