Poulan 421888 owner manual Engine, Cleaning

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MAINTENANCE

BELTS

Check belts for deterioration and wear after every 50 hours of operation and replace if necessary. The belts are not adjustable. Replace belts if they begin to slip from wear. (See “TO REMOVE BELT COVER” in the Service and Adjustments section of this manual).

The belts on your snow thrower are of special construction and should be replaced by original equipment manufacturer (OEM) belts available from your nearest dealer. Using other than OEM belts can cause personal injury or damage to the snow thrower.

AUGER GEAR CASE

•The gear case was filled with lubricant to the proper level at the factory. The only time the lubricant needs attention is if service has been performed on the gear case.

•If lubricant is required, use only Ronex ED #1 grease.

TRACTION DRIVE SYSTEM

DO NOT lubricate the drive components inside the snow thrower. The sprockets, hex shafts, drive disc and friction wheel require no lubrication. The bearings and bushings are lifetime lubricated and require no maintenance.

CAUTION: Any lubricating of the above compo- nents can cause contamination of the friction wheel and damage to the drive system of your snow thrower.

ENGINE

See engine manual.

LUBRICATION

Use only high quality detergent oil rated with API service classification SG–SL. Select the oil's SAE viscosity grade according to your expected operating temperature.

NOTE: Although multi-viscosity oils (5W30, 10W30 etc.) improve starting in cold weather, these multi-viscosity oils will result in increased oil consumption when used above 32°F. Check your engine oil level more frequently to avoid possible engine damage from running low on oil.

Change the oil after every 25 hours of operation or at least once a year if the snow thrower is not used for 25 hours in one year.

Check the crankcase oil level before starting the engine and after each five (5) hours of continuous use. Tighten oil fill cap / dipstick securely each time you check the oil level.

TO CHANGE ENGINE OIL

Determine temperature range anticipated before next oil change. All oil must meet API service classification SG–SL.

•Be sure snow thrower is on level surface.

•Oil will drain more freely when warm.

•Catch oil in a suitable container.

NOTE: The left side wheel may be removed from snow thrower for easier access to the oil drain plug and place- ment of a suitable container. The unit tilted, resting on the frame with the left wheel removed, will help drain any oil trapped inside the engine. (See “TO REMOVE WHEELS” in the Service and Adjustments section of this manual).

1.Remove safety ignition key and disconnect spark plug wire from spark plug and place wire where it cannot come in contact with plug.

2.Clean area around drain plug.

3.Remove drain plug and drain oil in a suitable container.

4.Install drain plug and tighten securely.

5.Wipe off any spilled oil from snow thrower and engine.

6.Install left wheel (if removed for draining oil). Be sure to install klick pin into proper hole in wheel axle (See “TO REMOVE WHEELS” in the Service and Adjustments section of this manual).

7.Remove oil fill cap/dipstick. Be careful not to allow dirt to enter the engine.

8.Refill engine with oil through oil dipstick tube. Pour slowly. Do not overfill. For approximate capacity see “PRODUCT SPECIFICATIONS” section of this manual.

9.Use gauge on oil fill cap/dipstick for checking level. Be sure dipstick cap is tightened securely for accurate reading. Keep oil at “FULL” line on dipstick.

10.Wipe off any spilled oil.

MUFFLER

Inspect and replace corroded muffler as it could create a fire hazard and/or damage.

SPARK PLUG

Replace spark plug at the beginning of each season or after every 100 hours of operation, whichever occurs first. Spark plug type and gap setting are shown in the “PRODUCT SPECIFICATIONS” section of this manual.

CLEANING

IMPORTANT: For best performance, keep snow thrower housing free of any dirt or trash. Clean the outside of your snow thrower after each use.

WARNING: Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with plug.

•Keep finished surfaces/wheels free of gasoline, oil, etc.

•We do not recommend using a garden hose to clean your snow thrower unless the electrical system, muffler and carburetor are covered to keep water out. Water in engine can result in shortened engine life.

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Contents Model Number Snow ThrowerSafe Operation Practices for Walk-Behind Snow Throwers Table of Contents Parts Packed Separately in Carton Assembly / PRE-OPERATIONHOW to SET UP Your Snow Thrower Remove Snow Thrower from CartonInstall Speed Control ROD See Figs Unfold Upper HandleCheck Tire Pressure Install Auger Control ROD See FigsInstall Discharge Chute / Chute Rotater Head See Fig Primer OperationKnow Your Snow Thrower Ignition KEYMeets A.N.S.I. Safety Requirements Recoil auxiliary starter handle used for starting the engineTo USE Fuel SHUT-OFF Valve See Fig HOW to USE Your Snow ThrowerStopping To USE Choke Control See FigTo Throw Snow See Fig Using the CLEAN-OUT Tool See FigTo Adjust Skid Plates See Fig To Move Forward and Backward See FigCheck Engine OIL Level See Fig Before Starting the EngineScraper BAR See Fig ADD Gasoline See FigBefore Stopping Snow Throwing TipsTo Start Engine If Recoil Starter has FrozenBefore Each USE MaintenanceGeneral Recommendations LubricationCleaning EngineChute Deflector Service and AdjustmentsTo Adjust Snow Thrower Height Shear Bolts See FigTo Replace Belts See Fig Storage OtherTroubleshooting Service Notes Exploded KEY Part Description Auger Bearing Auger HousingScrapper BAR Bearing PlugAuger Assembly LH Auger Assembly RHWasher Knob BlackPOP Rivet Plastic WasherRotator Pivot Bracket LEVER/CABLE Rotator AssemblyRotator Head Pulley PivotHandle Grip Repair Parts Snow Thrower - Model Number PR208 HandlesPanel Bracket LH Panel Bracket RH Lower HandleKnob RED SpacerRetainer Handle KnobShifter ROD TOP Impeller ROD AssemblyTraction ROD Assembly Shifter ROD Bottom01.10.001-B Console PanelRepair Parts Snow Thrower - Model Number PR208 Drive END Plate Speed Selector Assembly43 402689 Drive Plate Assembly Control ARMSprocket Axle ShaftRoll PIN 3/16 Clik PINKEY Part Description LCT Engine Model PLMHK18600781DP 417014X428 Engine Mount PlateImpeller Belt Belt CoverTraction Belt 187831X417 Repair Parts Snow Thrower - Model Number PR208 WheelsWheel Assembly LH 187866X417Retainer PIN Repair Parts Snow Thrower - Model Number PR208 BAG of PartsSafety Ignition KEY WrenchRepair Parts Snow Thrower - Model Number PR208 Decals Service Notes Service Notes Limited Warranty

421888 specifications

The Poulan 421888 is a powerful and versatile chainsaw designed for both professionals and hobbyists seeking reliability and performance in their cutting tasks. Renowned for its robust construction and ease of use, this model is particularly well-suited for a range of applications, from light trimming to more demanding tree felling and firewood preparation.

One of the standout features of the Poulan 421888 is its efficient engine. The chainsaw is equipped with a potent 42cc two-stroke engine that provides ample power for various cutting tasks while maintaining a lightweight design. This balance of power and weight allows users to operate the saw for extended periods without excessive fatigue. The engine also incorporates advanced technologies that contribute to optimal fuel efficiency, ensuring users can complete their work without constantly refueling.

Another notable characteristic of the Poulan 421888 is its easy-start mechanism. The innovative starting system reduces the effort required to fire up the engine, making it accessible for a broader range of users, including those who may be less experienced with chainsaws. Additionally, the chainsaw features an automatic oiler that ensures the chain remains adequately lubricated during operation, which extends the life of the chain bar and enhances cutting efficiency.

Safety is a paramount consideration in chainsaw design, and the Poulan 421888 addresses this with its comprehensive safety features. It comes equipped with a chain brake that stops the chain almost immediately in the event of a kickback, protecting the user from potential injuries. Furthermore, it includes a handguard and anti-vibration handles that improve comfort and stability while reducing operator fatigue.

The Poulan 421888 also places an emphasis on user-friendly maintenance. With its tool-less chain tensioning system, adjusting the chain for optimal tension is a quick and straightforward process, allowing users to focus on their work rather than wrestling with complex adjustments. The durable construction of the chainsaw ensures it can withstand the rigors of frequent use in various environments.

In summary, the Poulan 421888 is a well-rounded chainsaw that excels in providing power, efficiency, and safety. Its advanced features and user-centric design make it a reliable choice for anyone in need of a robust cutting tool, whether for professional landscaping, forestry work, or home improvement projects. With the Poulan 421888, users can tackle their cutting tasks with confidence and ease.
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