Product Instruction Manual
Page 7
.... Always switch off the engine and allow any spilled fuel has been wiped away. Wipe off any fire or flame near the fuel or the power tool. MS 311, MS 391 5 the fuel system is damaged. To reduce the risk of fuel spillage and fire from saw chain moving. Always engage the... tighten the fuel cap in the tank to allow it can cause fire and serious burn injury or property damage. Do not continue operating this happens, change your body and the cutting attachment behind you. Fuel Your STIHL power tool uses an oilgasoline mixture for fuel leakage while refueling...
.... Always switch off the engine and allow any spilled fuel has been wiped away. Wipe off any fire or flame near the fuel or the power tool. MS 311, MS 391 5 the fuel system is damaged. To reduce the risk of fuel spillage and fire from saw chain moving. Always engage the... tighten the fuel cap in the tank to allow it can cause fire and serious burn injury or property damage. Do not continue operating this happens, change your body and the cutting attachment behind you. Fuel Your STIHL power tool uses an oilgasoline mixture for fuel leakage while refueling...
Product Instruction Manual
Page 27
... so as well. Store in or on the ground before fueling your machine. Always thoroughly shake the mixture in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). MS 311, MS 391 25 The chemical composition of 50:1. We recommend STIHL 50:1 two-stroke engine oil since it is lower, use...
... so as well. Store in or on the ground before fueling your machine. Always thoroughly shake the mixture in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). MS 311, MS 391 25 The chemical composition of 50:1. We recommend STIHL 50:1 two-stroke engine oil since it is lower, use...
Product Instruction Manual
Page 36
...throttle operation After a long period of fuel in a dry place, well away from thermal overload. Always slacken off the chain again after about 5 to run at high revs (full throttle off , it again. Long-term storage See "Storing the machine" 34 MS 311, MS 391 The chain contracts as it can...bar - After finishing work . Short-term storage Wait for an extended period. This avoids unnecessarily high loads during work Do not make the mixture leaner to sag. Check chain tension frequently A new saw chain must not come out of the bar groove on the underside of ignition, ...
...throttle operation After a long period of fuel in a dry place, well away from thermal overload. Always slacken off the chain again after about 5 to run at high revs (full throttle off , it again. Long-term storage See "Storing the machine" 34 MS 311, MS 391 The chain contracts as it can...bar - After finishing work . Short-term storage Wait for an extended period. This avoids unnecessarily high loads during work Do not make the mixture leaner to sag. Check chain tension frequently A new saw chain must not come out of the bar groove on the underside of ignition, ...
Product Instruction Manual
Page 39
Standard setting MS 311, MS 391 LA N Shut off the engine N Check the air filter and clean or replace if necessary. carburation, ignition, timing and valve or port timing) without ... fine limits. N Check the spark arresting screen (country-specific) in the muffler and clean or replace if necessary. 37 This setting provides an optimum fuel-air mixture under most operating conditions. If the setting is too lean there is only possible to insufficient lubrication and overheating. 0001BA007 KN 0001BA008 KN Installing the...
Standard setting MS 311, MS 391 LA N Shut off the engine N Check the air filter and clean or replace if necessary. carburation, ignition, timing and valve or port timing) without ... fine limits. N Check the spark arresting screen (country-specific) in the muffler and clean or replace if necessary. 37 This setting provides an optimum fuel-air mixture under most operating conditions. If the setting is too lean there is only possible to insufficient lubrication and overheating. 0001BA007 KN 0001BA008 KN Installing the...
Product Instruction Manual
Page 57
...emission-related warranted parts: - Limitations This Emission Control Systems Warranty shall not cover any of the recommended 2-stroke fuel-oil MS 311, MS 391 55 The following : N repair or replacement required because of misuse, neglect or lack of a warranted ... applicable) - Maintenance Requirements mixture (see also instruction "Fuel"). Fuel Tank - Intake Manifold - and #3,400,476) 4-MIX® AUTOCUT® EASYSTART® FARM BOSS® OILOMATIC® STIHL Cutquik® STIHL DUROMATIC® STIHL Quickstop® STIHL ROLLOMATIC® STIHL WOOD BOSS® TIMBERSPORTS...
...emission-related warranted parts: - Limitations This Emission Control Systems Warranty shall not cover any of the recommended 2-stroke fuel-oil MS 311, MS 391 55 The following : N repair or replacement required because of misuse, neglect or lack of a warranted ... applicable) - Maintenance Requirements mixture (see also instruction "Fuel"). Fuel Tank - Intake Manifold - and #3,400,476) 4-MIX® AUTOCUT® EASYSTART® FARM BOSS® OILOMATIC® STIHL Cutquik® STIHL DUROMATIC® STIHL Quickstop® STIHL ROLLOMATIC® STIHL WOOD BOSS® TIMBERSPORTS...
User Manual
Page 13
...or short circuit wire. Check ignition lead/ignition module and replace ignition module if necessary. too much oil Use correct mixture of fuel and oil Incorrect air gap between ignition Set air gap correctly module and flywheel Flywheel cracked or damaged or pole ... break in ignition module Secure ignition lead properly Fuel/oil mixture - 3.5 Ignition System Exercise extreme caution while carrying out maintenance and repair work on the ignition system. Engine housing damaged (cracks) Install new engine housing 12 MS 311, MS 391 The high voltages which occur can cause serious...
...or short circuit wire. Check ignition lead/ignition module and replace ignition module if necessary. too much oil Use correct mixture of fuel and oil Incorrect air gap between ignition Set air gap correctly module and flywheel Flywheel cracked or damaged or pole ... break in ignition module Secure ignition lead properly Fuel/oil mixture - 3.5 Ignition System Exercise extreme caution while carrying out maintenance and repair work on the ignition system. Engine housing damaged (cracks) Install new engine housing 12 MS 311, MS 391 The high voltages which occur can cause serious...
User Manual
Page 29
..., b 12.5 28 MS 311, MS 391 This can be checked through the spark plug hole. - 6.2 Leakage Test Defective oil seals and gaskets or cracks in castings are the usual causes of the prescribed idle speed difficult, if not impossible. Such faults allow supplementary air to enter the engine and upset the fuel-air mixture. 6.2.1 Preparations...
..., b 12.5 28 MS 311, MS 391 This can be checked through the spark plug hole. - 6.2 Leakage Test Defective oil seals and gaskets or cracks in castings are the usual causes of the prescribed idle speed difficult, if not impossible. Such faults allow supplementary air to enter the engine and upset the fuel-air mixture. 6.2.1 Preparations...
