Assessments - 3, GPA: 3.3
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Facilidade de uso
27 TO ADJUST CARBURETOR (See Fig. 28) The carburetor has a high speed jet and has been preset at the factory and adjustment should not be necessary. However, minor adjustments may be required to compensate for differences in fuel, temperature, altitude or load_ If the carburetor does need adjustment, proceed as follows. In general, turning the idle needle valve in (clockwise) decreases the supply of fuel to the engine giving a leaner fuel!air mixture. Turning the needle valve out (counterclockwise) increases the supply of fuel to the engine giving a richer fuel/air mixture. IMPORTANT: DAMAGE TO THE NEEDLES AND THE SEATS IN CARBURETOR MAY RESULT IF SCREWS ARE TURNED IN TOO TIGHT. PRELIMINARY SETTING , Air cleaner assembly must be assembled to the carburetor when making carburetor adjustments. • Be sure the throttle control cable is adjusted properly (see above). ', With engine off, turn idle needle valve in (clockwise) closing it finger' tight and then turn valve out (counter clockwise) 1-1/2 turns_ FINAL SETTING -Start engine and allow to warm for five minutes_ Make final adjustments with engine running at idle and drive control bar in "DISENGAGED" position. = With throttle control lever in "SLOW" position, turn idle needle valve in (clockwise) until engine begins to die then turn out (counterclockwise) until engine runs rough. Turn valve to a point midway between those two positions. IDLE RPM ADJUSTMENT -To adjust idle RPM, rotate throttle linkage counterclockwise and hold against stop while adjusting idle speed adjusting screw to obtain 1750 RPM.. Release throttle linkage. ACCELERATION TEST = Move throttle control lever from "SLOW" to "FAST" position. If engine hesitates or' dies, turn needle valve out (counterclockwise) 1/8 turn Repeat test and continue to adjust, if necessary, until engine acceler ates smoothly.. High speed stop is factory adjusted. Do not adjust or damage may result.. IMPORTANT: NEVER TAMPER WITH THE ENGINE GOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE SPEED OVERSPEEDINGTHEENGINEABOVE THE FACTORY HIGH SPEED SETTING CAN BE DANGEROUS. IF YOU THINK THE ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR NEAREST AUTHORIZED SERVICE CENTER/ DEPARTMENT, WHICH HAS THE PROPER EQUIPMENT AND EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS. THROTTLELINKAGE IDLE SPEED ADJUSTING SCREW \ IDLE NEEDLE VALVE FIG. 28 18 Immediately prepare your tiller for storage at the end of the season or if the unit will not be used for 30 days or more. = Hn=,= n,i,u = H .................. CAUTION: Never store the tiller with where fumes may reach an open flame gasoline in the tank inside a building or spark. Allow the engine to cool before storing in any enclosure. .............. = i IH=,,= = TILLER • Clean entire tiller (See "CLEANING" in the Customer Responsibilities section of this manual). o Inspect and replace belts, if necessary (See belt replacement instructions in the Service and Adjustments section of this manual)_ o Lubricate as shown in the Customer Responsibilities section of this manual. • Be sure that all nuts, bolts and screws are securely fastened° Inspect moving parts fordamage, breakage and wear. Replace if necessary° o Touch up all rusted or chipped paint surfaces; sand iightly before painting. ENGINE FUEL SYSTEM IMPORTANT: tT IS IMPORTANT TO PREVENT GUM DEPOSITS FROM FORMING {N ESSENTIAL FUEL SYSTEM PARTS SUCH AS THE CARBURETOR, FUEL FILTER, FUEL HOSE, OR TANK DURING STORAGE, ALSO, EXPERIENCE INDICATES THAT ALCOHOL BLENDED FUELS (CALLED GASOHOL OR US[NG ETHANOL OR METHANOL) CAN ATTRACT MOISTURE WHICH LEADS TO SEPARATION AND FORMATION OF ACIDS DURING STORAGE. ACIDIC GAS CAN DAMAGE THE FUEL SYSTEM OF AN ENGINE WHILE IN STORAGE° ° Drain the fuel tank_ o Start the engine and let it run until the fuel lines and carburetor are empty. o Never use engine or carbu retor cleaner products in the fuel tank or permanent damage may occur. • Use fresh fuel next season NOTE: Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum deposits during storage. Add stabilizer to gasoline in fuel tank or storage container. Always toIlow the mix ratio found on stabilizer container. Run engine at least 10 minutes after adding stabilizer to allow the stabilizer to reach the carburetor. Do not drain the gas tank and carburetor if using fuel stabilizer. ENGINE OIL Drain oil (with engine warm) and replace with clean oil. (See "ENGINE" in the Customer Responsibilities section of this manual). CYLINDERS o Remove spark plug_ • Pour I ounce (29 ml) of oil through spark plug hole into cylinder. • Pull starter handle slowly several times to distribute oil. ° Replace with new spark plug,, OTHER o Do not store gasoline from one season to another_ • Replace your gasoline can if your can starts to rusL Rust and/or dirt in your gasoline will cause problem& o If possible, store your unit indoors and cover it to give protection from dust and dirt. . Cover your unit with a suitable protective cover that doe...