Checking Chain Dirt; Cleaning The Chain; Checking The Chain Tension; Checking Rear Sprocket / Engine Sprocket For Wear - KTM 525 XC ATV 2008 Owner's Manual

MAINTENANCE ON CHASSIS AND ENGINE

Checking chain dirt

Check the chain for coarse dirt accumulation.
» If the chain is very dirty:
Clean the chain. (

Cleaning the chain

Warning
Environmental hazard Problem materials cause environmental damage.
Dispose of oil, grease, filters, fuel, cleaning substances, brake fluid, batteries, etc. according to regulations.
Info
The service life of the chain depends largely on its maintenance.
Clean the chain regularly and then treat with chain spray.
Chain cleaner ( P. 97)
Offroad chain spray (

Checking the chain tension

Warning
Danger of accidents Danger caused by incorrect chain tension.
If the chain tension is too high, the components of the secondary power train (chain, engine sprocket, rear sprocket, bear-
ings in transmission and rear wheel eccentric element) are under additional load. Apart from premature wear, in extreme
cases the chain can rupture or the countershaft of the transmission can break. On the other hand, if the chain is loose,
it can fall off the engine sprocket or the rear sprocket and block the rear wheels or damage the engine. Check for correct
chain tension and adjust if necessary.

Checking rear sprocket / engine sprocket for wear

P. 45)
P. 97)
Park the vehicle on a horizontal surface and shift gears to neutral.
Push the upper chain section at the end of the chain sliding component upwards to
measure the chain tension
Chain tension
100093-10
» If the chain tension does not meet specifications:
Check rear sprocket / engine sprocket for wear.
» If the rear sprocket / engine sprocket are worn:
400227-01
Check that the chain guides are tight.
.
Info
The lower chain section must be taut.
Chain wear is not always even, so you should repeat this measurement at
different chain positions.
Adjust the chain tension. (
Replace the rear sprocket / engine sprocket.
Info
When fitting the chain joint, always make sure that the closed side
of the joint faces forward (riding direction).
The engine sprocket, rear sprocket and chain should always be
replaced together.
140... 145 mm (5.51... 5.71 in)
P. 46)
45