Service Precautions - Sym JET 4 R 50 Series Service Manual

SERVICE PRECAUTIONS

Always use with SANYANG genuine parts
and recommended oils. Using non-designed
parts for SANYANG motorcycle may damage
the motorcycle.
Special tools are designed for remove and
install of components without damaging the
parts being worked on. Using wrong tools
may result in parts damaged.
When servicing this motorcycle, use only
metric tools. Metric bolts, nuts, and screws
are not interchangeable with the English
system, using wrong tools and fasteners may
damage this vehicle.
Clean the outside of the parts or the cover
before removing it from the motorcycle.
Otherwise, dirt and deposit accumulated on
the part's surface may fall into the engine,
chassis, or brake system to cause a damage
Wash and clean parts with high ignition point
solvent, and blow dry with compressed air.
Pay special attention to O-rings or oil seals
because most cleaning agents have an
adverse effect on them.
Never bend or twist a control cable to prevent
stiff control and premature worn out.
Rubber parts may become deteriorated when
old, and prone to be damaged by solvent and
oil. Check these parts before installation to
make sure that they are in good condition,
replace if necessary.
When loosening a component which has
1. GENERAL INFORMATION/TROUBLE DIAGNOSIS
different sized fasteners, operate with a
diagonal pattern and work from inside out.
Loosen the small fasteners first. If the bigger
ones are loosen first, small fasteners may
receive too much stress.
Store complex components such as
transmission parts in the proper assemble
order and tie them together with a wire for
ease of installation later.
1-3