User manual STIHL MS 250 CBE

[. . . ] To reduce the risk of kickback injury use STIHL reduced kickback bar and STIHL PMC3, PD3 (3/8" Picco) or RMC3 (0. 325“) 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. [. . . ] Go to chapter on "Tensioning the Saw Chain" N N Unscrew the nut and remove the chain sprocket cover. 143BA034 KN N N Pull the hand guard towards the front handle until there is an audible click – the chain brake is disengaged. N Fitting the chain N N 2 Turn the screw (1) counterclockwise until the tensioning nut (2) butts against the left end of the housing slot. 207BA009 KN 1 Wear work gloves to protect your hands from the sharp cutters. MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C 25 143BA003 KN 001BA186 KN English 3 1 2 1 207BA010 KN Mounting the Bar and Chain (quick chain tensioner) 2 2310BA015 KN 4 Removing the chain sprocket cover N Fit the guide bar over the studs (1) – the cutting edges on the top of the bar must point to the right. Engage the peg of the tensioner slide in the locating hole (2) –- place the chain over the sprocket (3) at the same time. Turn the tensioning screw (4) clockwise until there is very little chain sag on the underside of the bar – and the drive link tangs are engaged in the bar groove. Go to chapter on "Tensioning the Saw Chain" N N N Remove screw (2) 1 2310BA013 KN N 3 2 1 3 N Swing grip (1) into position (until it engages) Turn the wing nut (2) to the left until it hangs loosely in the chain sprocket cover (3) Remove chain sprocket cover (3) N Position tensioning gear (1) and guide bar (3) relative to one another N N N Mounting the tensioning gear 2 2310BA017 KN 1 2310BA014 KN N Insert and tighten screw (2) N Remove and reverse tensioning gear (1) 26 MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C 2310BA016 KN English Releasing the chain brake N Fit the saw chain – starting at the nose of the guide bar – pay attention to the position of the tensioning gear and the cutting edges Turn tensioning gear (1) to the right as far as possible Turn the guide bar so that the tensioning gear faces the user N N 001BA186 KN N Pull hand guard towards the front handle until it engages audibly – chain brake is released 2 3 181BA013 KN 135BA011 KN Fitting the saw chain N N Place the saw chain on the chain sprocket (2) N Slide the guide bar over the collar screw (3); the head of the rear collar screw must protrude into the oblong hole Guide the drive link into the bar groove (see arrow) and turn the tensioning gear to the left as far as possible Fit chain sprocket cover, sliding the guide lugs into the engine housing openings N 4 5 1 181BA012 KN 2310BA018 KN Put on protective gloves – risk of injury by the sharp cutters. When fitting the chain sprocket cover, the teeth of the adjusting wheel and the tensioning gear must mesh; if necessary, MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C 27 English N turn the adjusting wheel (4) a little until the chain sprocket cover can be slid completely against the engine housing Swing grip (5) into position (until it engages) Fit wing nut and tighten lightly 133BA024 KN Tensioning the Saw Chain (side chain tensioner) Tensioning the Saw Chain (front chain tensioner) N N N 1 Retensioning during cutting work: N N N N Switch off the engine. Use a screwdriver to turn the tensioning screw (1) clockwise until the chain fits snugly against the underside of the bar. Use a screwdriver to turn the tensioning screw (1) clockwise until the chain fits snugly against the underside of the bar. N N 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". 28 MS 210, MS 210 C, MS 230, MS 230 C, MS 250, MS 250 C 143BA045 KN Next step: see "Tensioning the Saw Chain" 1 English Tensioning the Saw Chain (quick chain tensioner) 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 two-stroke air cooled engine oil. Use mid-grade unleaded gasoline with a minimum octane rating of 89 (R+M/2) and no more than 10% ethanol content. 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. [. . . ] 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. Any such part repaired or replaced under the warranty must be warranted for the remaining warranty period. Any warranted part that is scheduled only for regular inspection in the written instructions required by the Emission Warranty Parts List (see below) must be warranted for the warranty period defined in Subsection COVERAGE BY STIHL INCORPORATED, see above. [. . . ]