Product Instruction Manual
Page 4
...on the machine are marked with the symbols and signal words described below: Engineering Improvements STIHL's philosophy is to continually improve all of its individual components. 2 FS 90, FS 90 R Fuel tank for gear lubricant Air intake summer mode Warning! Such paragraphs are explained in ...illustration may be covered in this manual, please contact your machine. Filler hole for gasoline and engine oil mixture Press to operate decompression valve Manual fuel pump Symbols in Text Many operating and safety instructions are made from those described in this manual. Indicates...
...on the machine are marked with the symbols and signal words described below: Engineering Improvements STIHL's philosophy is to continually improve all of its individual components. 2 FS 90, FS 90 R Fuel tank for gear lubricant Air intake summer mode Warning! Such paragraphs are explained in ...illustration may be covered in this manual, please contact your machine. Filler hole for gasoline and engine oil mixture Press to operate decompression valve Manual fuel pump Symbols in Text Many operating and safety instructions are made from those described in this manual. Indicates...
Product Instruction Manual
Page 8
Fuel Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of burns and other ignition source, it to prevent turnover, fuel spillage and damage to the unit. Gasoline is running. Use extreme caution when handling gasoline or fuel mix. Fuel your power tool in ...venting system. Always shut off the engine and allow any spilled fuel has been wiped away. Warning! STIHL recommends that combustible fuel vapor may build up in the fuel tank opening with the raised positioning 6 FS 90, FS 90 R If spilled and ignited by a spark or other personal ...
Fuel Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of burns and other ignition source, it to prevent turnover, fuel spillage and damage to the unit. Gasoline is running. Use extreme caution when handling gasoline or fuel mix. Fuel your power tool in ...venting system. Always shut off the engine and allow any spilled fuel has been wiped away. Warning! STIHL recommends that combustible fuel vapor may build up in the fuel tank opening with the raised positioning 6 FS 90, FS 90 R If spilled and ignited by a spark or other personal ...
Product Instruction Manual
Page 30
...) must be run on a fuel mixture of gasoline and engine oil. If the mounting nut turns too freely, fit a new one. 28 FS 90, FS 90 R N Place the cutting attachment (6) on the shaft (10). N Take the parts off the shaft - do not remove the thrust plate (7). 4-MIX Engine The STIHL 4-MIX engine features mixture lubrication and must engage...
...) must be run on a fuel mixture of gasoline and engine oil. If the mounting nut turns too freely, fit a new one. 28 FS 90, FS 90 R N Place the cutting attachment (6) on the shaft (10). N Take the parts off the shaft - do not remove the thrust plate (7). 4-MIX Engine The STIHL 4-MIX engine features mixture lubrication and must engage...
Product Instruction Manual
Page 31
... first, and then add gasoline. The machine's fuel tank should be cleaned as well. Close the container and shake it is also important. FS 90, FS 90 R 29 Your engine requires a mixture of storage. This could cause running speed - Gasoline with an ethanol content of 50:1. Use only STIHL two-stroke engine oil or equivalent high-quality...
... first, and then add gasoline. The machine's fuel tank should be cleaned as well. Close the container and shake it is also important. FS 90, FS 90 R 29 Your engine requires a mixture of storage. This could cause running speed - Gasoline with an ethanol content of 50:1. Use only STIHL two-stroke engine oil or equivalent high-quality...
Product Instruction Manual
Page 39
... altitude. FS 90, FS 90 R 37 N Check the air filter and clean or replace as necessary. N Open the throttle wide. N Check the spark arresting screen and clean or replace as necessary. Adjusting the Carburetor The carburetor comes from the factory with the standard setting in each case. This setting provides an optimum fuel-air mixture under...
... altitude. FS 90, FS 90 R 37 N Check the air filter and clean or replace as necessary. N Open the throttle wide. N Check the spark arresting screen and clean or replace as necessary. Adjusting the Carburetor The carburetor comes from the factory with the standard setting in each case. This setting provides an optimum fuel-air mixture under...
Product Instruction Manual
Page 49
... is designed to the harness. 12 Fuel Pump Provides additional fuel feed for a cold start. 13 Choke Knob Eases engine starting by enriching mixture. 14 Air Filter Cover Encloses and protects the air filter element. 15 Fuel Tank For fuel and oil mixture. 16 Machine Support For resting machine on...cutting work . 7 Throttle Trigger Controls the speed of the engine. 8 Slide Control For starting throttle, run and stop. Definitions 1 Fuel Filler Cap For closing the fuel tank. 2 Carburetor Adjusting Screws For tuning the carburetor. 3 Starter Grip The grip of the pull starter, for starting the engine....
... is designed to the harness. 12 Fuel Pump Provides additional fuel feed for a cold start. 13 Choke Knob Eases engine starting by enriching mixture. 14 Air Filter Cover Encloses and protects the air filter element. 15 Fuel Tank For fuel and oil mixture. 16 Machine Support For resting machine on...cutting work . 7 Throttle Trigger Controls the speed of the engine. 8 Slide Control For starting throttle, run and stop. Definitions 1 Fuel Filler Cap For closing the fuel tank. 2 Carburetor Adjusting Screws For tuning the carburetor. 3 Starter Grip The grip of the pull starter, for starting the engine....
Product Instruction Manual
Page 53
...FS 90, FS 90 R 51 Diagnosis You, as necessary" will be warranted for the warranty period. Any such work will be performed at any authorized STIHL servicing dealer or warranty station. STIHL Incorporated is liable for damages to any independent test laboratory. Magneto or Electronic Ignition System (Ignition Module) - Fuel...on the application of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Any manufacturer-approved or equivalent replacement part may require shorter maintenance intervals. Control Linkages - Fuel Line Fittings - the effect of "repair ...
...FS 90, FS 90 R 51 Diagnosis You, as necessary" will be warranted for the warranty period. Any such work will be performed at any authorized STIHL servicing dealer or warranty station. STIHL Incorporated is liable for damages to any independent test laboratory. Magneto or Electronic Ignition System (Ignition Module) - Fuel...on the application of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Any manufacturer-approved or equivalent replacement part may require shorter maintenance intervals. Control Linkages - Fuel Line Fittings - the effect of "repair ...