Question about Riso RZ220 Duplicator
Riso's are famous for this, i will scrub the rubber timing
roll with rubber rejuvenator and clean the steel roll with alcohol.The riso
paper feed clutches are weak compared to what they were in this series you may
have to replace the clutch. Bud, after doing some research you need to clean
the oneway bearings on the pickup and feed rolls, adjust feed table hieght and
lastly check/adjust timing in drive and feed roller-you will need a manual for
Hope this may help;
Posted on Jul 26, 2008
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Posted on Jan 02, 2017
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