Stihl MS 311 User Manual

MS 311, MS 391
English
35
Adjustable flow oil pump is a special
option.
Different quantities of oil are required for
different bar lengths, types of wood and
cutting techniques.
Use the adjusting screw (1) (on
underside of machine) to vary the oil
feed rate as required.
Ematic position (E), medium oil flow rate
–
N turn the adjusting screw to "E"
(Ematic position).
To increase oil feed –
N turn the adjusting screw clockwise.
Turn reduce oil feed –
N turn the adjusting screw
counterclockwise.
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.
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.
Oil Quantity Control
The chain must always be wetted
with a film of lubricant.
001BA157 KN
1
Taking Care of the Guide
Bar
2
3
1
143BA026 KN
Chain type Pitch Minimum
groove
depth
Picco 3/8" P 0.20"
(5.0 mm)
Rapid 1/4" 0.16"
(4.0 mm)
Rapid 3/8"; 0.325" 0.24"
(6.0 mm)
Rapid 0.404" 0.28"
(7.0 mm)

Stihl MS 311 Specifications

General

Oil tank capacity	0.348 L
Fuel tank capacity	0.6 L
Power source	Gasoline

Weight and Dimensions

Weight	6200 g