How to start a Stihl FS 491 C-M Trimmer when the engine won't start?
If your Stihl Trimmer engine won't start, it could be due to several reasons. First, ensure you have enough fuel mix in the tank; if not, refuel it. If the carburetor is too hot, allow the trimmer to cool down and depress the manual fuel pump at least 10 times before attempting to start it. Also, if the carburetor has iced up, allow the trimmer to warm up to +10°C.
What to do if my Stihl FS 491 C-M engine stops while idling?
If your Stihl Trimmer engine stops while idling, the carburetor may have iced up. Allow the trimmer to warm up to +10°C.
Why does the engine on my Stihl FS 491 C-M idle erratically?
If the engine on your Stihl Trimmer idles erratically, it could be due to the carburetor icing up. Allow the trimmer to warm up to +10°C.
Why doesn't my Stihl FS 491 C-M Trimmer engine reach maximum speed?
If your Stihl Trimmer engine isn't reaching maximum speed, it could be because the trimmer is not correctly tuned to the ambient conditions. Calibrate the brushcutter. Another potential cause is an incorrectly adjusted throttle cable, so adjust the throttle cable.
General| Engine Type | 2-stroke |
|---|---|
| Fuel Capacity | 0.75 l |
| Handle Type | Bike handle |
| Start System | Easy2Start |
| Shaft Type | Straight |
| Overall Length | 1, 800 mm |
| Cutting Attachment | Grass Cutting Blade |
Lists documents to read alongside the manual.
Explains warning symbols and text references.
Identifies and describes the main components of the brushcutter.
Mentions illustrations of deflectors and cutting attachments.
Explains various symbols, icons, and warning signs used in the manual.
Explains warning signs and usage for deflectors and shredder blade guards.
Discusses operator requirements and protective clothing for safe use.
Guidelines for safe working area and checks for component safety.
Safety measures for fuel handling and general safe working practices.
Explains kickout causes and safety for transporting the brushcutter.
Steps to ensure the brushcutter is ready for use.
Step-by-step guide to assemble the bike handle.
Instructions for removing the deflector and limit stop.
Steps to mount and remove the mowing head.
Instructions for mounting and removing metal cutting attachments.
Steps to mount a shredder blade.
Instructions for removing metal cutting attachments.
Guide to fitting and adjusting the full harness.
Steps to adjust the bike handle for user comfort.
Procedure to balance the brushcutter for proper use.
Instructions on mixing fuel for the brushcutter.
Steps for safely fueling the brushcutter.
Procedure for starting the brushcutter engine.
Procedure for safely shutting off the engine.
How to check throttle trigger, lockout, and throttle cable.
How to set the trimmer for winter and summer operation.
Procedure for automatic trimmer calibration.
Techniques for holding, controlling, and mowing with the brushcutter.
Instructions for thinning and using saw blades.
How to adjust nylon line feed on mowing heads.
Steps to take after completing work.
Instructions for cleaning the main trimmer unit.
How to clean deflectors and cutting attachments.
Recommended intervals for maintenance tasks.
Steps for lubricating the gearbox.
Advice on sharpening and balancing metal cutting attachments.
Information on repairs and when to contact a dealer.
Common problems and their remedies for the brushcutter.
Steps to replace the air filter.
Procedure for cleaning the spark plug.
Technical specifications of the brushcutter model.
Details on sound and vibration levels.
Information on REACH and Exhaust Emissions compliance.
Information on original STIHL spare parts and accessories.
Guidelines for environmentally friendly disposal.
Declaration of conformity with EU directives.
Declaration of conformity with UK regulations.
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