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1-2 General Information; Before Servicing - Kawasaki ZR-7S Service Manual

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1-2 GENERAL INFORMATION
Before Servicing
Before starting to perform an inspection service or carry out a disassembly and reassembly opera-
tion on a motorcycle, read the precautions given below. To facilitate actual operations, notes, illustra-
tions, photographs, cautions, and detailed descriptions have been included in each chapter wherever
necessary.
This section explains the items that require particular attention during the removal and
reinstallation or disassembly and reassembly of general parts.
Especially
note the following:
(1) Dirt
Before removal and disassembly, clean the motorcycle. Any dirt entering the engine will shorten
the life of the motorcycle. For the same reason, before installing a new part, clean off any dust or
metal filings.
(2) Battery Leads
Disconnect the ground (-) wire from the battery before performing any disassembly operations
on the motorcycle.
This prevents the engine from accidentally turning over while work is being
carried out, sparks from being generated while disconnecting the wires from electrical parts, as
well as damage to the electrical parts themselves.
For reinstallation, first connect the positive
wire to the positive (+) terminal of the battery.
(3) Installation, Assembly
Generally, installation or assembly is the reverse of removal or disassembly. However, if instal-
lation or assembly sequence is given in this Service Manual, follow it. Note parts locations and
cable, wire, and hose routing during removal or disassembly so they can be installed or assem-
bled in the same way. It is preferable to mark and record the locations and routing whenever
possible.
(4) Tightening Sequence
When installing bolts, nuts, or screws for which a tightening sequence is given in this Service
Manual, make sure to follow the sequence.
When installing a part with several bolts, nuts, or
screws, start them all in their holes and tighten them to a snug fit, thus ensuring that the part has
been installed in its proper location. Then, tighten them to the specified torque in the tightening
sequence and method indicated. If tightening sequence instructions are not given, tighten them
evenly in a cross pattern. Conversely, to remove a part, first loosen all the bolts, nuts, or screws
that are retaining the part a 1/4-turn before removing them.
(5) Torque
When torque values are given in this Service Manual, use them. Either too little or too much
torque may wire to serious damage. Use a good quality, reliable torque wrench.
(6) Force
Common sense should dictate how much force is necessary in assembly and disassembly.
If
a part seems especially difficult to remove or install, stop and examine what may be causing the
problem. Whenever tapping is necessary, tap lightly using a wooden or plastic-faced mallet. Use
an impact driver for loosening screws (particularly for removing screws held by non-permanent
locking agent) in order to avoid damaging the screw heads.
(7) Edges
Watch for sharp edges, as they could cause injury through careless handling, especially during
major engine disassembly and assembly. Use a clean piece of thick cloth when lifting the engine
or turning it over.
(8)
High-Flash Point Solvent
A high-flash point solvent is recommended to reduce fire danger. A commercial solvent com-
monly available in North America is Stoddard solvent (generic name). Always follow manufacturer
and container directions regarding the use of any solvent.
(9) Gasket, O-ring
Replace a gasket or an O-ring with a new one when disassembling.
Remove any foreign matter
from the mating surface of the gasket or O-ring to ensure a perfectly smooth surface to prevent
oil or compression
leaks.
(10)Liquid Gasket, Non-Permanent
Locking Agent
Clean and prepare surfaces where liquid gasket or non-permanent
locking agent will be used.
Apply them sparingly.
Excessive amounts may block engine oil passages and cause serious
damage.

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