Saw Chain Tension Adjustment; Chain Brake Mechanical Test - MTD Yard Machines MTD1435a Manuel D'utilisation

For Parts Call 606-678-9623 or 606-561-4983 For Parts Call 606-678-9623 or 606-561-4983
MAINTENANCE AND REPAIR INSTRUCTIONS

SAW CHAIN TENSION ADJUSTMENT

WARNING:
the saw chain.
Proper tension of saw chain is extremely important and
must be checked before starting, as well as during any
cutting operation.
Taking the time to make needed adjustments to the saw
chain will result in improved cutting performance and
prolonged chain life.
To adjust the saw chain:
1. Loosen bar nut, then hold nose of guide bar up and
turn adjustment screw (A) CLOCKWISE to increase
chain tension. Turning screw COUNTERCLOCK-
WISE will decrease amount of tension on chain.
Insure the chain fits snugly all the way around the
guide bar (Fig. 28).
Fig. 28
2. After making adjustment, and while still holding nose
of bar in the uppermost position, tighten the bar
retaining nuts securely. Chain has proper tension
when it has a snug fit all around and can be pulled
around by gloved hand.
NOTE: If chain is difficult to rotate on guide bar or if it
binds, too much tension has been applied. This
requires minor adjustment as follows:
A. Loosen the bar retaining nuts so they are finger
tight. Decrease tension by turning the bar adjust-
ment screw COUNTERCLOCKWISE slowly. Move
chain back and forth on bar. Continue to adjust until
chain rotates freely, but fits snugly. Increase tension
by turning bar adjustment screw CLOCKWISE.
B. When saw chain has proper tension, hold nose of
bar in uppermost position and tighten the bar retain-
ing nuts securely.
A
Fig. 29
Always use protective
gloves when handling
A
B
C
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CAUTION:
adjustment after as few as 5 cuts. This is nor-
mal with a new chain, and the interval
between future adjustments will lengthen
quickly.
CAUTION:
TIGHT, the sprocket, bar, chain, and crank-
shaft bearings will wear more rapidly. Study
Fig. 23 for information concerning correct cold
tension (A), correct warm tension (B), and as
a guide for when saw chain needs adjustment
(C).

CHAIN BRAKE MECHANICAL TEST

Your chain saw is equipped with a
reduces possibility of injury due to kickback. The brake
is activated if pressure is applied against brake lever
when, as in the event of kickback, operator's hand
strikes the lever. When the brake is actuated, chain
movement stops abruptly.
WARNING:
reduce the possibility of injury due to kick-
back; however, it cannot provide the intended
measure of protection if the saw is operated
carelessly. Always test the Chain Brake
before using your saw and periodically while
on the job.
To Test the Chain Brake
1. The CHAIN BRAKE
move) when BRAKE LEVER IS PULLED BACK
AND LOCKED. Be sure the chain break latch is in
the OFF position. (Fig. 30).
2. The CHAIN BRAKE
stopped) when brake lever is in forward position and
the chain break latch is in the ON position. You
should not be able to move chain (Fig. 30).
NOTE: The brake lever should snap into both positions. If
strong resistance is felt, or lever does not move into either
position, do not use your saw. Take it immediately to an
Authorized Service Center for repair.
OFF
16
A new saw chain
stretches, requiring
If saw chain is TOO
LOOSE or TOO
Chain Brake ® that
The purpose of the
Chain Brake ® is to
®
® :
® is DISENGAGED (chain can
® is ENGAGED (chain is
Fig. 30