Taking Care Of The Guide Bar; Shroud - Stihl MS 171 Instruction Manual

Taking Care of the Guide
Bar
2
1
N Turn the bar over – every time you
sharpen the chain and every time
you replace the chain – this helps
avoid one-sided wear, especially at
the nose and underside of the bar.
N
Regularly clean the oil inlet hole (1),
the oilway (2) and the bar
groove (3).
N Measure the groove depth – with
the scale on the filing gauge (special
accessory) – in the area used most
for cutting.
MS 171, MS 181, MS 181 C, MS 211, MS 211 C
Chain type
Picco
Rapid
Rapid
Rapid
If groove depth is less than specified:
N Replace the guide bar.
The drive link tangs will otherwise
scrape along the bottom of the groove –
the cutters and tie straps will not ride on
the bar rails.
3
Pitch Minimum
groove
depth
3/8" P 0.20"
(5.0 mm)
1/4" 0.16"
(4.0 mm)
3/8"; 0.325" 0.24"
(6.0 mm)
0.404" 0.28"
(7.0 mm)

Shroud

Removing the shroud
N Squeeze the throttle trigger and
move the Master Control lever to l
.
N Slide the lock to the rear.
N Remove the shroud upwards to the
rear.
Installing the shroud
N Refit the shroud and secure it with
the lock.
English
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