Adjusting The Transmission Chain Tension - RIEJU MRT 50 Chassis Workshop Manual

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Familiarising yourself with the moped

ADJUSTING THE TRANSMISSION CHAIN TENSION

The chain is adjusted by loosening the rear wheel shaft and screwing in or unscrewing the
nuts and bolts adjacent to the shaft (A/ F-19), ensuring that there is the same distance on
both sides of the shaft at all times.
ATTENTION: Poor chain and wheel alignment may cause the chain to come off, as well
as problems of stability on the moped.
To check and adjust the chain, act on the rear wheel shaft, making sure to work at the point
of maximum tension in the chain at all times.
To check the free play, turn the rear wheel several times and check the tension at several
points in order to find the point with the highest tension.
The moped must be standing upright with its two wheels on the ground, and the free play
of the chain should be from 30 to 40 mm. (F-20).
Be careful not to over-tighten the chain as this may cause damage to the engine and to the
transmission. Keep the chain tension within the limits specified in the attached diagrams.
The chain should be cleaned and lubricated periodically. The chain is formed of
a large number of parts that work one with the other. Failure to maintain the
chain properly will cause it to wear rapidly, and it is therefore recommended to
lubricate the chain periodically, using special chain lubrication oil.
Prior to lubrication the chain needs to be cleaned with a brush or a cloth to re-
move dirt and mud on the chain, and then apply the lubricant between the side
plates, and on all the central rollers.
A
30-40 mm
F-19
Chassis
F-20