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We packed it with everything you need, even a lower price. The MS 250 is designed to give you years of powerful and efficient performance. It’s packed with features you’ll find on more expensive saws. And like every STIHL product, the MS 250 comes with our exclusive network of over 8,000 Dealers who service what they sell. THE STIHL MS 250. NEARLY 100 FEATURES. UNDER $300. SEE FOR YOURSELF AT ONE OF OUR PARTICIPATING DEALERS! ENGINE FEATURES FEATURE 2 piston rings
BENEFIT Ensures engine compression for the life of the engine creating a longer engine life. 25 cooling fins on cylinder Equivalent to those of a pro saw. Adjustable low-speed mixture Helps with the tuning of the chain saw, allowing for optimal screw performance. 3-piece forged & machined Forged, machined and balanced to withstand 540,000 crankshaft RPMs/hour(9,000 RPMs @ 60 minutes). Air baffle Efficiently channels cooling air from the flywheel across the cylinderfor better engine cooling. Carburetor with high-speed check Provides efficient fuel delivery at full throttle and insures a valve smooth idle. Cast iron machined piston rings Like pro saws, the two piston rings are machined to a gap of .008" - .010" Cooling plate Deflects muffler heat away from cylinder. Crankshaft bearing Constructed to turn 1 million revolutions in 2 hours at 9,000 rpm. Dowel pins in ring lands Prevents the rotation of piston rings. Easy-access spark plug Makes spark plug maintenance easy – just remove the insulated high-tension lead and use the combination wrench to access the spark plug. Easy-service starter pawl Independent from the starter rope pulley, enabling easy maintenance for longer pulley life. Emmisions Standards This engine meets EPA exhaust emissions regulations for 2010. Floating wrist pin needle bearing Reduces wear on wrist pin. Forged connecting rod Like pro chain saws, the connecting rod is forged instead of
stamped for a longer service life. Connecting the carburetor to cylinder, the manifold is flexible to isolate it from engine vibration and the interior contains a rough surface to atomize fuel/air mixture and prevent fuel puddling. Fuel tank filter Easy to replace fuel filter with an 80-micron rating. Gear driven oil pump Pumps oil only when the chain is moving, reducing oil waste. High-impact polymer engine Manufactured by STIHL, the engine housing is sonically housing welded and pressure tested. High temperature spark plug Fires 200 times per second at 9,000 RPMs. Integral impulse-driven fuel pump Designed to limit fuel permeation into the atmosphere for fewer emissions. Integrated fuel tank Designed to limit fuel permeation into the atmosphere for fewer emissions. Isolated fuel tank Isolated from the engine so the fuel remains cool. Isolated carburetor Isolated from the engine to prevent fuel from vaporizing and to maintain proper fuel-to-air mixture. Large cooling finned flywheel Large design and 16 cooling fins help keep the engine cool. Balanced and spin tested to 22,000 RPMs. Larger cylinder A more robust cylinder with a larger cooling surface area than the MS 230. Limited high-speed mixture screw Permits altitude adjustments for peak chain saw performance. Long life fuel pump diaphragms Mylar fuel pump and woven silk-coated metering diaphragm resists fuel corrosion for a longer service life. Machine-tooled steel alloy wrist Ground to a tolerance of .004mm (.00015") to fasten the piston pin to the connecting rod. Meets ANSI standards This saw meets ANSI B175.1 standards. Needle bearings on connecting A large surface of needle bearing sets help carry the vertical rod motion load of the piston and connecting rod. Oil tank filter Filters out debris in oil tank to keep lubrication flowing. Oval-shaped barrel piston Narrower at skirt end, fitting the cylinder as it heats up. Positive sealing vent tank Reduces emissions into the air while enabling proper fuel flow. Precision-milled piston Piston and Cylinder are machined with very tight tolerances. Solid-state ignition The solid-state capacitor discharge ignition module is reliable in all weather. Staggered spaced cooling fins Staggered spacing reduces vibration and noise. UL listed This saw is listed by Underwriters Laboratory. USFS fire-safe muffler with spark Baffled and tuned for more tolerable sound. arrester screen Vented oil tank Designed to prevent oil spillage and waste while allowing the easy flow of lubricant. Formed flexible intake manifold
CUTTING SYSTEM FEATURES FEATURE .325 pitch chain 1 piece spur sprocket Bar scabbard Chamfered rivet holes Chromed cutters Dual bar stud with 19mm hex
BENEFIT Longer running life and more resistance to wear. Manufactured by STIHL to be easy to maintain and replace. Protects the bar and chain during storage and transport. A special machining process ensures smooth rivet holes with no microscopic cracks. Sharpened before assembly to stay sharp longer with less filing. Dual bar studs and large hex bar nuts offer solid bar mounting.
nuts Easy to change bar and chain Ematic™ bar
Flame hardened bar rails Hardened rivets Integrated chain catcher Integrated chain guides Low kickback saw chain Reduced kickback bar Metal bumper spike OILOMATIC® channel Prestretched chain
Saw chain filing marks Saw chain wear marks Side chain adjuster Sprocket tip bar nose with 22 roller bearings STIHL guide bar STIHL laminated bar STIHL OILOMATIC® chain Tri-shoe inboard clutch
Easy to change, rotate and maintain and the bar removes from the engine easily if the saw is ever bound in a cut. Features a ramp that acts as oil reservoir so the passing chain can pick up lubricating oil, reducing oil consumption up to 50%. Increases the wear resistance. Specially designed to withstand heavy loads and stress. Designed to wrap the chain into the sprocket cover for protection if the chain jumps the bar. Nylon chain guides are integrated into the sprocket cover to help keep chain in bar groove. Designated with a green link and designed to reduce kickback. Designated with a green dot and designed to reduce kickback. 6-toothed steel bumper spike that's similar to pro chain saws. Specially designed to channel lubricating oil to critical chain components reducing oil volume, friction and wear. Prestretched before leaving the factory to eliminate excessive chain stretching during the break-in period and also reduces maintenance time and component wear. Stamped marks on depth gauge indicate filing angle. Stamped marks on cutter indicate sharpening angle and minimum tooth length. On the side of sprocket and not near the muffler. Slightly lifts chain to reduce friction as the chain passes the bar nose. Designed for long service life, the bar is symmetrical and can be flipped for even bar rail wear. Lighter than solid bar. Swiss-made in STIHL factories. STIHL is the only chain saw manufacturer to design and make its own chain. Three-shoe clutch with heavy-duty springs offering maximum contact surface with sprocket.
OPERATION FEATURES FEATURE 100% engine test Anti-vibration system
Built-in felling sites Built in Virginia Beach, VA Combination wrench Easy-access starter Easy-grip ribbed front handle Easy-to-remove air filter cover Ergonomic design
BENEFIT Every engine is test started and adjusted before it leaves the factory. The anti-vibration system was invented by STIHL for handheld outdoor power equipment in 1967, starting with the 041 chain saw. Sighting lines are molded into the sprocket and starter covers at 90 degrees to the bar to help you align your felling cuts. STIHL has a factory in Virginia Beach, VA that employs about 2,000 workers. Features a screwdriver for adjusting chain and a socket that fits hex nuts and spark plug. Easy to remove and service. Lightweight and tough polymer handle is flush on one side to assist in tight cutting situations. No tools are needed for removal. Designed to be balanced and comfortable during long periods
Front hand guard
Heavy-duty starter rope High engine speed High-impact polymer High power-to-weight ratio Inertia activated chain brake Large starter handle Large surface air filter Limited warranty Manually activated chain brake Master Control Lever™ One fastener type Product warranty registration Rear hand guard Retained fuel cap Retained oil cap Screwdriver STIHL Dealer Streamlined design Summer/winter shutter The brand name STIHL Throttle trigger Lockout Toolless fuel cap Toolless oil cap Wide rear handle
of use. Integrated with chain brake, the see-through hand guard helps prevent contact with brush and limbs and viewing windows allow for better viewing of the cutting area. Features 3mm heavy-duty braided rope. Engine has a wide-open throttle specification of 14,000 RPMs. Withstands a variety of chemicals and impact while still remaining lightweight. High performance and lightweight. The chain brake is activated in a fraction of a second during episodes of significant kickback force. Easy to grip even when wearing gloves. Easy to maintain and replace flocked air filter features nearly 9" of surface area. Covers user for defects in workmanship and is backed by your local Dealer. Can be manually activated to quickly stop the chain between cutting jobs. Control all engine functions from one switch, located so it is easy to turn off the engine with a flick of your thumb. Uses T27 Torx head screws, so only one tool is needed for maintenance and for secure fastening. STIHL Dealer will register the product for you. Helps prevent accidental contact to user's hand if the chain breaks. Also protects from contact with brush. Built-in retainer helps prevent cap from becoming lost and preventing saw use. Built-in retainer helps prevent cap from becoming lost and preventing saw use. Included for carburetor adjustment. STIHL sells its products only through independent servicing Dealers. The smooth design with no protruding edges makes it easy to move through brush and limbs. Enables proper engine operation in different seasons. STIHL has been manufacturing chain saws since 1926. Helps prevent accidental acceleration of engine. Hands must be firmly on the control handle to engage engine. Easy on / off with half twist, no tools required. Easy on / off with half twist, no tools required. Gives you room to place your foot into the handle for onground starting.
