STORAGE

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.

WARNING: Never store the tiller with gasoline in the tank inside a building where fumes may reach an open flame or spark. Allow the en- gine to cool before storing in any enclosure.

TILLER

•Clean entire tiller (See “CLEANING” in the Maintenance section of this manual).

•Inspect and replace belts, if necessary (See belt re- placement instructions in the Service and Adjustments section of this manual).

•Lubricate as shown in the Maintenance section of this manual.

•Ensure that all nuts, bolts and screws are securely fastened. Inspect moving parts for damage, breakage and wear. Replace if necessary.

•Touch up all rusted or chipped paint surfaces; sand lightly before painting.

ENGINE

FUEL SYSTEM

IMPORTANT: IT IS IMPORTANT TO PREVENT GUM DEPOSITS FROM FORMING IN 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 USING 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.

•Empty the fuel tank by starting the engine and let it run until the fuel lines and carburetor are empty.

•Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur.

•Use fresh fuel next season.

NOTE: Fuel stablizer is an acceptable alternative in mini- mizing the formation of fuel gum deposits during storage. Add stabilizer to gasoline in fuel tank or storage container. Always follow the mix ratio found on stablizer container. Run engine at least 10 minutes after adding stablizer to allow the stabilizer to reach the carburetor. Do not empty 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 Maintenance section of this manual.)

CYLINDER(S)

•Remove spark plug.

•Pour 1 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.

15

OTHER

•Do not store gasoline from one season to another.

•Replace your gasoline can if your can starts to rust. Rust and/or dirt in your gasoline will cause problems.

•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 does not retain moisture. Do not use plastic. Plastic cannot breathe which allows condensation to form and will cause your unit to rust.

IMPORTANT: NEVER COVER TILLER WHILE ENGINE AND EXHAUST AREAS ARE STILL WARM.

TILLER HANDLE STORAGE OPTIONS

The tiller handle assembly can be modified to allow for a variety of storage positions outlined below.

CAUTION: Do not start or operate tiller when handle is in any of these positions.

STORAGE POSITION: AGAINST ENGINE (See Fig. 23)

•Unscrew top or bottom handle knob and washer, and remove top or bottom carriage bolt.

•Rotate entire handle assembly about carriage bolt (pivot point) and lay handle against engine shroud.

TOP CARRIAGE BOLT

TOP

KNOB

Fig. 23

STORAGE POSITION: IN TRANSPORT ARM STORAGE FEATURE (See Fig. 24)

•Unscrew (2) handle knobs and remove (2) carriage bolts.

•Remove top handle assembly and place it in handle storage feature in transport arm.

BOTTOM

HANDLE

KNOB

TOP

HANDLE

KNOB

Fig. 24

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McCulloch 433691, MC550, 96083000300 manual Storage, Other, Fuel System, Engine OIL, Cylinders
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96083000300, MC550, 433691 specifications

The McCulloch 433691, also known as the MC550, is a versatile and robust chainsaw designed for both homeowners and professionals seeking efficiency and reliability in their tools. Packed with advanced features and cutting-edge technologies, the MC550 stands out in a competitive market.

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In summary, the McCulloch 433691 (MC550) is a powerful and efficient chainsaw, featuring a robust engine, automatic oiling system, and essential safety mechanisms. Its blend of performance, convenience, and safety makes it an excellent choice for anyone looking to tackle outdoor cutting tasks with ease and confidence. Whether you are a homeowner needing to maintain your garden or a professional arborist, the MC550 is equipped to meet your chainsawing needs effectively.
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