Suzuki GS500E (1989-1997) [22/221] Miles 6000

Suzuki GS500E (1989-1997) [22/221] Miles 6000
Every 4000 miles (6000 km) or 12 months 1-9
1 Make sure your spar\< plug socket is the
correct size before attempting to remove the
plugs - a suitable one Is supplied In the
motorcycle's tool kit which Is stored under the
seat.
2 Remove the seat (see Chapter 7) and
disconnect the battery negative (-ve) lead.
3 Clean the area around the plug caps to
prevent any dirt falling into the spar\< plug
channels.
4 Check that the cylinder location is marked
on each plUQ leed, then pull the spark plug cap
off each spark plug (see Illustration). Using
either the plug spanner supplied In the blke~s
toolkit or a deep plug socket, unscrew the
plugs from the cylinder head (see illustration).
Lay each plug out in relation to its cylinder; if
either plug shows up a problem it will then be
easy to identify the troublesome cylinder.
5 Inspect the electrodes for wear. Both the
centre and side electrodes should have
square edges and the side electrode should
be of uniform thickness. Look for excessive
deposits and evidence of a cracked or
chipped Insulator around the centre electrode.
Compare your spark plugs to the colour spark
plug reading chart at the end of this Manual.
Check the threads, the washer and the
ceramic insulator body for cracks and other
damage.
S If the electrodes are not excesslv~ly wom,
and If the deposits can be easily removed with
a wire brush, the plugs can be re..g~pedand
re-used (If no cracks or chips are visible in the
insulator). If in doubt concerning the condition
of the plugs. replace them with new ones, as
the expense is minimal.
7 Cleaning spark plugs by sandblasting is
permitted, provided you clean"" plugs with a
hIgh flash-point solvent afterwards.
8 Before installing the plugs, make sure they
6.4b ... then ooscrew the spark plug
are the cOl'rect type and heat range and check tighten by a further 1/4 turn with the tool
the gap between the electrodes (they are not supplied or a deep socket. Beware of over-
pr&-set on new plugs). For best results, use a tightening the plugs otherwise the threads in
wire-type gauge rather than a flat (feeler) the head could be stripped.
gauge to check the gap (S88 illustrations). 10 Reconnect the spark plug caps, making
Compare the gap to that specified and adjust sure they are securely connected to the
as necessary. If the gap must be adjusted, correct cylinder.
bend the side electrode only and be very
careful not to chip or crack the insulator nose
(see Illustration). Make sure the washer Is in
place before Installing each plug.
9 Since the cylinder head is made of
aluminium, which Is soft and easily damaged,
thread the plugs Into the head by hand (see
Illustration). Fit each plug finger-tight, then

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