Echo Power Pruner PPT-300ES Operator's Manual page 63

Guide Bar Cover Cleaning
1. Remove two (2) 6 mm guide bar nuts (A) and guide bar cover
screw (B).
2. Remove guide bar cover (D).
3. Gently brush debris from inside guide bar cover and from around
sprocket.
4. Install guide bar cover (D), install and tighten guide bar nuts, and
install guide bar cover screw (B).
To Adjust Saw Chain Tension
1. Move stop switch to STOP position.
2. Disconnect spark plug lead.
3. Loosen two guide bar nuts (A) until finger tight.
4. Hold the bar nose up, and turn the adjuster screw (B) clockwise un-
til the chain fits snugly against the underside of the bar, as shown.
Cold Chain Only - turn adjuster screw CW an additional 1/8 - 1/4
turn.
5. Tighten both guide bar nuts with nose held up. Tighten rear nut
first.
6. Pull the chain around the guide bar by hand. Reduce the chain ten-
sion if you feel tight spots.
7. When chain is properly tensioned, tighten guide bar nuts securely.
IMPORTANT
Tighten guide bar nuts to 8 - 9 N•m (71 - 80 in. lbs.) DO NOT
over-tighten nuts. Damage may result.
8. Keep chain properly tensioned at all times.
NOTE
All chains require frequent adjustment.
9. Connect spark plug lead.
Bar P/N
Standard
12" regular bar P/N
12A0CD3744
Optional
PPT-300ES Power Pruner Bar & Chain
Chain P/N Chain Type
M91VX44G
N1C-BL or N1C
P P
ower
o '
PeraTor s
B
D
C
a
B
Links Pitch
91 44
91 44
TM
runer
27
M
anual
A
Gauge
3/8" 0.050
3/8" 0.050