User manual STIHL MS 171

[. . . ] To reduce the risk of kickback injury use STIHL reduced kickback bar and STIHL PMMC3 (3/8" Picco) or PMC3 (3/8" Picco) chain depending on sprocket pitch or other available low kickback components. Read and follow all safety precautions in Instruction Manual – improper use can cause serious or fatal injury. lea y siga todas las precauciones de seguridad dadas en el manual de instrucciones – el uso incorrecto puede causar lesiones graves o mortales. Instruction Manual 1 - 65 Manual de instrucciones 67 - 136 English Contents Guide to Using this Manual Safety Precautions and Working Techniques Cutting Attachment Mounting the Bar and Chain (side chain tensioner) Mounting the Bar and Chain (quick chain tensioner) Tensioning the Saw Chain (side chain tensioner) Tensioning the Saw Chain (quick chain tensioner) Checking Chain Tension Fuel Fueling Chain Lubricant Filling Chain Oil Tank Checking Chain Lubrication Chain Brake Winter Operation Starting / Stopping the Engine Operating Instructions Taking Care of the Guide Bar Shroud Air Filter System Cleaning the Air Filter Engine Management Adjusting the Carburetor Spark Plug Engine Running Behavior Replacing the Starter Rope and Rewind Spring 2 3 24 24 25 27 27 28 28 29 31 31 32 32 33 34 38 39 39 40 40 41 41 42 43 43 Storing the Machine Checking and Replacing the Chain Sprocket Maintaining and Sharpening the Saw Chain Inspections and Maintenance by Dealer Maintenance and Care Main Parts Specifications Special Accessories Ordering Spare Parts Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement STIHL Incorporated California Exhaust and Evaporative Emissions Control Warranty Statement Trademarks 47 47 48 52 53 55 57 59 59 60 Allow only persons who fully understand this manual to operate your chain saw. [. . . ] Go to "Tensioning the Saw Chain" Use a screwdriver to turn the tensioning screw (1) clockwise until the chain fits snugly against the underside of the bar. N N A new chain has to be retensioned more often than one that has been in use for some time. n Check chain tension frequently – see chapter on "Operating Instructions". A new chain has to be retensioned more often than one that has been in use for some time. n Check chain tension frequently – see chapter on "Operating Instructions". MS 171, MS 181, MS 181 C, MS 211, MS 211 C 27 English Checking Chain Tension Fuel This engine is certified to operate on unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of 50:1. Your engine requires a mixture of highquality gasoline and quality two-stroke air cooled engine oil. Use mid-grade unleaded gasoline with a minimum octane rating of 89 (R+M/2). If the octane rating of the mid-grade gasoline in your area is lower, use premium unleaded fuel. This, in turn, increases the risk of piston seizure and damage to the engine. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc. For this reason STIHL recommends that you use only high-quality unleaded gasoline!Gasoline with an ethanol content of more than 10% can cause running problems and major damage in engines with a manually adjustable carburetor and should not be used in such engines. Engines equipped with M-Tronic can be run on gasoline with an ethanol content of up to 25% (E25). Use only STIHL two-stroke engine oil or equivalent high-quality two-stroke engine oils that are designed for use only in air cooled two-cycle engines. We recommend STIHL HP Ultra 2-Cycle Engine Oil since it is specially formulated for use in STIHL engines. Do not use BIA or TCW rated (twostroke water cooled) mix oils or other mix oils that state they are for use in both water cooled and air cooled engines (e. When filling at the pump, first remove the canister from your vehicle and place the canister on the ground before filling. The canister should be kept tightly closed in order to avoid any moisture getting into the mixture. The machine‘s fuel tank and the canister in which fuel mix is stored should be cleaned as necessary. Fuel mix ages Only mix sufficient fuel for a few days work, not to exceed 3 months of storage. Close the canister and shake it vigorously by hand to ensure proper mixing of the oil with the fuel. [. . . ] STIHL Incorporated will not be liable to warrant failures of warranted parts caused by the use of a non exempted add-on or modified part. The warranty on emissions-related parts will be interpreted as follows: 1. Any warranted part that is not scheduled for replacement as required maintenance in the written instructions required in the Emission Warranty Parts List (see below) must be warranted for the warranty period defined in Subsection COVERAGE BY STIHL INCORPORATED, see above. If any such part fails during the period of warranty coverage, it must be repaired or replaced by the manufacturer according to Subsection (4) below. [. . . ]