Fig.
38
Valve Clearance Setting
When tightening
the
lock
nut,
care should be taken so
that
the
adjusting
screw
will
not
turn
together with the nut. To prevent turning of
the
adjust screw, hold it with a screw driver.
5. ENGINE OIL
When
the
oil pan
is
drained through
the
drain plug hole, keep
the
tractor
in
a horizontal position. Draining should be done while the
engine
is
warm. Keep
the
oil drain plug removed for
about
five
minutes, and
the
oil will be completely let out. Refill with
the
recommended oil so
that
the
oil level will reach
the
safety mark on
the
oil
level
gauge.
Special care should be exercised so
that
no dust will enter into
the
engine. Before remove
the
oil
filler cap, be sure
to
clean it and its
surrounding area of dust.
The oil feeder must be also clean. When it
is
used, clean the
top
and
outlet
of
oil. To feed
the
oil, use a funnel with a filtering sieve.
6.
COOLING SYSTEM
The cooling water
must
be always clean and soft water, except when
using
an
antifreezer or anticorrossive agent. Make sure
that
the hose
joint
is
fully tightened
and
no
water leaks.
7.
TIGHTENING CYLINDER HEAD BOLTS
page
30
The
cylinder head bolts should be tightened
in
the
order
as
shown
in
Fig. 39. Tightening
torque
should read between
47
-
51
ft·lb (6.5 -
7.0
m-kg}.
It
is
advisable
that
a
torque
wrench be
u~.(:t
After
tightening
the
bolts, check for valve clearance.
~~;~
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