Chain Saw WG303E
19
2. Using a wire brush, screwdriver or similar tool, clear
the residue from the inner groove of the bar (See Fig.
U).
3. Make sure to clean oil passages thoroughly.
CONDITIONS WHICH REQUIRE GUIDE BAR
MAINTENANCE:
• Saw cuts to one side or at an angle.
• Saw has to be forced through the cut.
• Inadequate supply of oil to the bar and chain.
Check the condition of the guide bar each time the chain
is sharpened. A worn guide bar will damage the chain
and make cutting difficult.
After each use, with unit disconnected from power
source, clean all sawdust from the guide bar and
sprocket hole.
When rail top is uneven, use a flat file to restore square
edges and sides.
File Rail Edges
and Sides
Square
Worn Groove Correct Groove
Replace the guide bar when the groove is worn, the
guide bar is bent or cracked, or when excess heating or
burring of the rails occurs. If replacement is necessary,
use only the guide bar specified for your saw in the
repair parts list or on the decal located
on the chain saw.
REPLACING BAR & CHAIN
Fit the chain and guide bar as described in “Assembly
and Tensioning Chain”.
The circular groove of the guide bar will wear
particularly on the lower edge with time. When replacing
the chain turn the chain bar 180° to allow even wear, thus
extending chain bar life.
Check drive sprocket. If it is worn out or damaged due to
strain, have it exchanged by an authorized service agent.
If the chain bar is worn out or damaged, take the chain
tensioning catch off the bar by loosing the screw anti-
clockwise. Then fit the tensioning catch into the new bar
by tightening the screw clockwise. The catch protrude (a)
must be fitted into the bar hole (See Fig. S).
SHARPENING CHAIN
Have your chain sharpened professionally at your
approved service agent or sharpen the chain yourself
using the sharpening kit. Follow the sharpening
instructions supplied with the sharpening kit.
b
S
U
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