7
5. Installing guide bar and saw chain
A standard saw unit package contains the items as
shown below:
1) Power unit
2) Bar protector
3) Guide bar
4) Saw chain
5) Plug wrench
Open the box and install the guide bar and the saw chain
on the power unit as follows.
WARNING
The saw chain has very sharp edges. Use protective
gloves for safety.
1. Pull the guard towards the front handle to check that
the chain brake is not on.
2. Loosen a nut and remove the chain cover.
3. Gear the chain to the sprocket and, while tting the
saw chain around the guide bar, mount the guide
bar to the power unit. Adjust the position of chain
tensioner nut.
1) Hole
2) Chain cover
3) Chain tensioner nut
NOTE
Pay attention to the correct direction of the saw chain.
1) Moving direction
4. Mount the guide bar then t the saw chain around the
bar and sprocket.
5. Fit the chain tensioner nut into the lower hole of the
guide bar, then install the chain cover, and fasten the
mounting nut to nger tightness.
6. While holding up the tip of the bar, adjust the chain
tension by turning the tensioner screw until the tie
straps just touch the lower side of the bar rail.
7. Tighten the nuts securely with the bar tip held up (12
~ 15 Nm). Then check the chain for smooth rotation
and proper tension while moving it by hand. If neces-
sary, readjust with the chain cover loose.
1
1) Chain tension adjusting screw
8. Tighten the tensioner screw.
IMPORTANT
It is very important to maintain the proper chain tension.
Rapid wear of the guide bar or the chain coming off eas-
ily can be caused by improper tension. Especially when
using a new chain, take good care of it since it should
expand when rst used.
The Spiked bumper belongs to the chain saw.
It must be screwed up on chain saw before the initial
use. Please x the spiked bumper with two screws on
the forefront of the chain saw.
6. Fuel and chain oil
Fuel
The engines are lubricated by oil specially formulated
for air-cooled 2-cycle gasoline engine use. If oil is not
available, use an antioxidant added quality oil expressly
labeled for air-cooled 2-cycle engine use.
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