LAWN MOWER

Always observe safety rules when perform- ing any maintenance.

TIRES

•Keep tires free of gasoline, oil, or insect control chemicals which can harm rubber.

•Avoid stumps, stones, deep ruts, sharp

objects and other hazards that may cause tire damage.

BLADE CARE

For best results, mower blade must be kept sharp. Replace bent or damaged blades.

TO REPLACE BLADE

•Turn lawn mower on it’s side. See engine manual for proper direction of turning over the engine.

•Use a wood block between blade and mower housing to prevent blade from turning when removing blade bolt.

•Protect your hands with gloves and/or wrap blade with heavy cloth.

•Remove blade bolt, lock washer and flat washer.

•Remove blade and blade adapter.

•Inspect the key inside blade adapter.

Replace adapter if damaged. IMPORTANT: Blade bolt is grade 8 heat treated.

•Install new or sharpened blade with trailing edge up toward the engine.

•Position blade on blade adapter. Align the two (2) holes in blade with raised lugs of adapter.

•Reassemble blade bolt, lock washer and flat washer into blade adapter and crankshaft in exact order as shown.

•Position block of wood between blade and mower housing.

•Tighten blade bolt securely. Recom-

mended tightening torque is 35-40 ft. lbs. NOTE: We do not recommend sharpening the blade - but if you do, be sure the blade is balanced.

Blade adapter

Crankshaft

Key

keyway

Lockwasher

 

Blade

Blade

Crank

shaft

bolt Hardened

Trailing edge Blade adapter

washer

TO SHARPEN BLADE

Care should be taken to keep the blade balanced. An unbalanced blade will cause excessive vibration and eventual damage to lawn mower and engine.

•The blade can be sharpened with a file or on a grinding wheel. Do not attempt to sharpen while on the mower.

•To check blade balance, drive a nail into a beam or wall. Leave about one inch of the straight nail exposed. Place center hole of blade over the head of the nail. If blade is balanced, it should remain in a horizontal position. If either end of the blade moves downward, sharpen the heavy end until the blade is balanced.

GRASS CATCHER (IF SO EQUIPPED)

Grass catcher may be hosed with water but must be dry when used.

CAUTION: Under normal usage, the

catcher material is subject to deterioration and wear and should therefore be checked to ensure compliance with original manufacturer specifications.

ENGINE

Read the maintenance section of your engine manual.

LUBRICATION

Change the oil after the first two hours of operation and every 25 hours thereafter or at least once a year if the lawn mower is not used for 25 hours in one year. Refer to engine manual.

TO CHANGE ENGINE OIL (SEE ENGINE MANUAL)

•Be sure mower is on a level surface.

•Oil will drain more freely when warm.

•Catch oil in a suitable container.

•For engines without dipstick, remove bottom oil drain plug.

•For engines with oil fill cap/dipstick, remove bottom drain plug or remove en- gine oil cap and turn mower on its side.

•After oil has drained completely, replace oil drain plug and tighten securely.

•Refill engine with oil. Pour slowly. Do not overfill.

•Fill to top of slot inside of filler hole or to “FULL” line on dipstick on models so equipped. Keep oil at proper level.

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Poulan 172777 manual Lawn Mower, Engine
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172777 specifications

The Poulan 172777 is a powerful and versatile engine that caters to a variety of outdoor power equipment needs. Known for its reliability and efficiency, it is used in lawn mowers, snow blowers, and other gardening tools, making it a staple for homeowners and landscaping professionals alike.

One of the main features of the Poulan 172777 is its robust engine design. The engine typically features a displacement of 177cc, providing ample power to tackle tough mowing and clearing tasks. Its four-stroke technology ensures smooth performance, delivering a balance of power and fuel efficiency. Users can expect a clean and consistent operation, which is enhanced by the engine's ability to maintain an optimal RPM even under load.

In terms of technology, the Poulan 172777 is equipped with a modern carburetor system that improves fuel delivery and combustion efficiency. This results in reduced emissions and minimizes environmental impact, appealing to eco-conscious consumers. Additionally, the engine is designed with a recoil start system, ensuring that starting the engine is straightforward and hassle-free, allowing users to get to work quickly.

Durability is another significant characteristic of the Poulan 172777. This engine is built with high-quality materials that can withstand harsh outdoor conditions. Its cast iron cylinder sleeve offers increased longevity and helps maintain optimal engine temperatures. The overhead valve (OHV) design contributes to better heat dissipation, further enhancing the engine's lifespan and performance.

Moreover, the Poulan 172777 incorporates features aimed at user comfort and safety. The ergonomic design of the equipment it powers typically includes vibration-dampening technology, which reduces fatigue during extended use. Safety features such as low-oil shutdown mechanisms prevent engine damage and extend the overall life of the equipment.

In summary, the Poulan 172777 stands out for its powerful performance, advanced technology, and durable construction. It is an ideal choice for anyone looking for a reliable engine for their outdoor power equipment, capable of handling a range of tasks with ease. Whether for personal use or professional landscaping, the Poulan 172777 is engineered to deliver efficiency, comfort, and reliability. As such, it remains a popular choice among consumers seeking high-quality outdoor power solutions.
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