1. Loosen the tensioning wheel using the wrench and
remove the sprocket cover (Fig. 24).
Fig. 24
Tensioning
wheel
Wrench
2. Using heavy-duty gloves, push the tip of the guide bar
inwards towards the sprocket to relieve the tension and
create some slack on the chain (Fig. 25).
3. Keeping the guide bar pushed in, pull the chain off the
sprocket (Fig. 25).
4. With the chain off the sprocket, let go of the guide bar.
The guide bar should spring back slightly allowing you to
remove the chain and guide bar from the saw (Fig. 25).
Fig. 25
4
Guide bar
Sprocket
5. Lay out the new chain in a loop with the cutters facing
outwards and the drive links facing inwards. If necessary,
flip the chain and straighten any kinks (Fig. 26).
NOTE: Replace the chain with an official Sun Joe
replacement 5-inch chain (model SWJ-5CHAIN), and
the guide bar with an official Sun Joe
(model SWJ-5BAR).
Cutters faces outwards
Fig. 26
Drive links faces inwards
Sprocket
cover
®
replacement bar
®
16
6. Starting from the tip, place the new chain into the groove
of the guide bar. Ensure that the groove is free of any
obstructions and that the cutters on the top edge are
facing towards the tip of the guide bar, and the cutters on
the bottom edge are facing away from the tip of the guide
bar. If backwards, turn the chain around. The chain will
only loosely fit until secured onto the sprocket (Fig. 27).
NOTE: Make certain of the chain's direction. If the chain is
mounted backwards, the saw will vibrate abnormally and
will not cut.
Fig. 27
Top
Cutters faces towards tip
Bottom
Cutters faces away from tip
7. Secure the guide bar onto the tensioning pins (Fig. 28).
Fig. 28
Guide bar
8. At this point, the chain is not yet able to be fitted onto the
sprocket. To give the chain enough slack, push the tip of
the guide bar inwards towards the sprocket (Fig. 29).
9. Keeping the guide bar pushed in, wrap the end of the
chain onto the sprocket (Fig. 29).
Fig. 29
8
Guide bar
Sprocket
Tensioning pins
9