Taking Care Of The Guide Bar; Cleaning The Air Filter - Stihl MS 311 Manual De Instrucciones

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Taking Care of the Guide Bar

2
1
Turn the guide bar over – every time
N
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.
Regularly clean the oil inlet hole (1),
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the oilway (2) and the bar groove
(3).
Measure the groove depth – with the
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scale on the filing gauge (special
accessory) – in the area used most
for cutting.
40
Chain Chain pitch
type
Picco 1/4" P
Rapid 1/4"
Picco 3/8" P
Rapid 3/8"; 0.325"
Rapid 0.404"
If groove depth is less than specified:
Replace the guide bar.
N
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
Minimum

Cleaning the Air Filter

groove depth
0.16" (4.0 mm)
0.16" (4.0 mm)
If there is a noticeable loss of engine
0.20" (5.0 mm)
power
0.24" (6.0 mm)
0.28" (7.0 mm)
Removing the shroud
Move the Master Control lever to the
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stop position (0).
Push the hand guard forward – the
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chain is locked.
Open the twist locks (1) by turning
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them 1/4 turn counterclockwise with
the combination wrench.
Remove the shroud (2).
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Removing the air filter
Clean away loose dirt from around
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the filter.
NOTICE
To avoid damaging the filter, do not use
tools for removing and installing the air
filter.
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2
1
1
MS 311, MS 391