Helpline No. UK 0151 649 1500 / IRE 189 094 6244
10
5. Using a screwdriver, run the adjustment screw
(Fig 11A/Item G and Fig. 11B/Item G)
COUNTERCLOCKWISE until the TANG (Fig. 6/
Item E) (projecting prong) is to the end of its
travel toward the circular brake band (Fig. 6).
6. Fit the Chain brake lever/front handle guard
byaligning the tang with the slot in the chain
bar (re-adjust the tang position if it does not
line up correctly). Make sure that the pivot
(Fig. 6/Item E) fits into the chain bar (Fig. 8/
Item G). Make sure that the rubber strip (Fig 6/
item H) is flat and does not get caught on
the engine wall during assembly. The chain
must not slip off the bar when you do this. Fit
the two nuts (Fig. 7/ Item B) and tighten them
by hand and then follow the instructions for
adjusting the tension in ADJUSTING THE CHAIN
TENSION.
Saw chain tension adjustment
Proper tension of the 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.
Warning: Always wear heavy duty gloves
when handling saw chain or making saw chain
adjustments.
1. Before adjusting the chain tension screw you
must slacken the 2x retaining nuts. Otherwise
this will damage the tension screw.
2. Hold nose of guide bar up and turn
adjustment screw (G) CLOCKWISE to increase
chain tension. Turning screw
COUNTERCLOCKWISE will decrease amount of
tension on chain. Ensure the chain fits snugly
all the way around the guide bar (Fig. 10).
3. 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:
4. Loosen the bar retaining nut so they are
finger tight. Decrease tension by turning the
bar adjustment 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.
5. When saw chain has proper tension, hold
nose of bar in the uppermost position and
tighten the bar retaining nut securely.
Caution: A new saw chain stretches,
requiring adjustment after as few as 5 cuts. This is
normal with a new chain, and the interval
between future adjustments will lengthen quickly.
Caution: If the saw chain is TOO LOOSE or
TOO TAUT, the drive wheel, chain bar, chain and
crank shaft bearing will suffer premature wear.
Fig. 12 shows the correct tension A (when cold)
and tension B (when warm). Fig. C shows a
chain that is too loose.
11B
11A
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