03_04
03_05
03_06
Gearing chain (03_04, 03_05, 03_06)
The chain life depends on its correct lubrication and adjustment. Any act of negligence
or inattention in these procedures may cause damages and wearing in the pinion,
chain and crown, seriously affecting the vehicle performance.
CHECKING THE TRANSMISSION CHAIN TENSION
Check the transmission chain tension periodically. The check must be made with the
vehicle unloaded and in vertical position, and it must be repeated with the wheel in
different positions to ensure a non excessive crown eccentricity.
To check the tension press using your finger on the corresponding fork pin, the aver-
age of the chain must be between 30 and 45 millimetre.
TENSION ADJUSTMENT
To keep the transmission chain clearance within the right values, loosen nut «A» of
the wheel pin, screw the two adjustments «B» making the same number of turns for
adjustment on the right as for the adjustment on the left, so that the wheel is aligned.
Once the chain is adjusted, screw the wheel axle nut firmly.
DO NOT ASSEMBLE A NEW CHAIN WITH A WORN PINION OR CROWN, OR VICE
VERSA, SINCE NEW COMPONENTS WILL BE EASILY WORN.
LUBRICATION
To lubricate the transmission chain, distribute grease in small quantities on the inter-
sections among rollers and links while turning the wheel.
Use special oil for O-ring chains.
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