Installation manual
ENGINE
ADJUSTMENTS
SPARK
PLUGS
The spark
plugs
should be cleaned
and
regapped after
the
first 50 hour break-in period,
then
inspected
every
250
hours
thereafter
and
replaced
as
needed.
A
WARNING:
Do
not
remove
the
spark
plugs
while
the
engine
is
hot.
Allow
the
engine
to
cool
before
removing
them.
SPARK
PLUG
GAP:
0.031
±
0.002
in.
(0.8-
0.05
mm).
SPARK
PLUG
TORQUE:
25
Nm.
(18.45
fl-lb)
NOT.E:
Loctite Anti-Seize applied
to
the
threaded portion
of
the spark plugs will retard
corrosion,
making future
removal
ofthe spark plugs
easier.
INSPECTING
THE
SPARK
PLUGS
CHECK
FOR
CARBON
/BUILD
UP
AND
BURNING
...::_
t
GAP
f
HIGH
TENSION
CORDS
(IGNITION
WIRES)
Check
the
ignition wires every 500 operating
hours
as
engine
compartment heat can deteriorate
the
wires.
Check
the
resistance of each
wire.
Do
not
pull
on
the
wire
because
the
wire
connection inside
the
cap
may
become
separated
or
the
insulator
may
be
damaged.
When
removing
the wires
from
the spark plugs, grasp
and
twist
the
molded
cap,
then
pull the cap off the spark
plug.
The resistance value is 410
ohm per
inch
of
wire.
CHECKING
RESISTANCE
DRIVE
BELT
ADJUSTMENT
The drive belts must be
properly
tensioned.
Excessive
drive
belt tension
can
cause
rapid
wear
of
the
belts
and
reduce
the
service
life of
the
fresh
water pump's bearing A
slack
belt or
the
presence of
oil
on
the
belt
can
cause
belt
slipping,
resulting
in
high
operating
temperatures.
This
generator
has
two
drive
belts,
one
drives
the
governor
and
alternator
and
the
other
drives
the
raw
water
pump.
The
tension
adjustment
procedure
for
both
belts
is
as
follows:
1.
Remove
the
belt
guard.
2.
To
adjust
the
governor/alternator
drive,
loosen
the
two
governor
mounting
bolts.
To
adjust
the
raw
water pump/fresh
water
pump
drive
belt,
loosen
the
two
raw
water
pump
mounting
bolts.
3.
With
the
belt(s)
loose,
inspect
for
wear,
cracks
and
frayed
edges
and
replace
if
necessary.
4.
To
loosen
or
tighten
the
alternator drive
belt,
slide
the
alternator
in
or out
as
required,
then
retighten
its
mounting
bolts.
To
loosen or tighten
the
raw
water
pump/fresh
water
pump
drive
belt,
slide
the
raw
water
pump
in
or
out
as
required,
then
retighten
its
mounting
bolts.
5. The drive
belts
are
properly adjusted if it
can
be
deflected
no
less
than
3/8
inch (lOmm)
and
no
more
than
1/2
inch
(12mm)
as
the
belt
is
depressed
with
the
thumb
at
the
midpoint between
the
two
pulleys
on
the
longest
span
of
the
belt.
A
WARNING:
Never
attempt
to
check
or
adjust
a
drive
belt's
tension
while
the
engine
is
in
operation.
6 .. Operate
the
engine
for
about 5 minutes,
then
shut
down
the
engine
and
recheck
the
belts
tension.
7.
Replace
the
belt
guard.
NOTE:
Properly functioning spark plugs and
high
tension
Zeds
play a
very
important part
in
th'e
proper functioning
of
the
LOW
CO
system.
Service these componenets
regularly.
21