Poulan 421888 owner manual Service and Adjustments, To Adjust Snow Thrower Height, Chute Deflector

Page 15

SERVICE AND ADJUSTMENTS

WARNING: To avoid serious injury, before performing any service or adjustments:

1.Be sure the on/off switch is in the OFF position.

2.Remove safety ignition key.

3.Make sure the augers and all moving parts have completely stopped.

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

1.Disengage all controls and move throttle control to STOP position. Wait for all moving parts to stop.

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

3.Align holes in impeller hub with holes in impeller shaft and install two (2) new 1/4-20 x 1-5/8" capscrew/shear bolts. Install 1/4-20 locknuts and tighten securely.

CAUTION: Do not substitute. Use only original equipment capscrew/shear bolts as supplied with your snow thrower.

SNOW THROWER

TO ADJUST SNOW THROWER HEIGHT

See “TO ADJUST SKID PLATES” and “SCRAPER BAR” in the Operation section of this manual.

CHUTE DEFLECTOR

The chute deflector, attached to the top of the discharge chute, is provided to direct discharging snow away from the operator. If the deflector becomes damaged, it should be replaced.

WARNING: To avoid serious injury, never operate your snow thrower with the deflector removed or damaged.

•To change direction and/or distance snow is discharged, see “TO CONTROL SNOW DISCHARGE” in the Op- eration section of this manual.

SHEAR BOLTS (See Fig. 18)

AUGER SHEAR BOLTS

Both right and left-hand augers are secured to the auger shaft with a shoulder/shear bolt and hex nut. Should a for- eign object or ice become lodged in the augers, the shear bolts are designed to break, preventing damage to any other components. If one or both augers do not turn when auger control lever is engaged, check to see if one or both of the bolts have sheared. To replace the shear bolts:

1.Disengage all controls and move throttle control to STOP position. Wait for all moving parts to stop.

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

3.Align hole in auger hub with hole in auger shaft and install a new 1/4-20 x 2" shoulder/shear bolt and spacer. Install 1/4-20 lock nut and tighten securely.

CAUTION: Do not substitute. Use only original equipment shear bolts as supplied with your snow thrower.

4.Connect spark plug wire to spark plug. Replace safety ignition key

IMPELLER SHEAR BOLTS

 

The impeller is secured to the impeller shaft with two (2)

 

capscrew/shear bolts and hex nuts. Should a foreign object

 

or ice become lodged in the impeller, the capscrews are

 

designed to break, preventing damage to any other com-

 

ponents. If impeller does not turn when auger control lever

 

is engaged, check to see if the capscrews have sheared.

 

To replace the capscrew/shear bolts:

15

4. Connect spark plug wire to spark plug.

1/4-20

1/4-20 x 1-5/8

1/4-20 x 2

LOCKNUT

CAPSCREW /

SHOULDER /

 

SHEAR BOLT

SHEAR BOLT

 

IMPELLER HUB

SPACER

 

 

 

IMPELLER

 

 

SHAFT

 

 

 

AUGER

 

 

HUB

1/4-20

 

 

LOCKNUT

AUGER HUB

AUGER SHAFT

FIG. 18

TO REMOVE BELT COVER (See Fig. 19)

1.Remove the two (2) screws securing belt cover to frame.

2.Remove belt cover.

3.Replace belt cover by installing cover and screws and tighten securely.

BELT

COVER

FRAME

SCREWS

FIG. 19

Page 14 Page 16
Image 15
Page 14 Page 16
Contents Snow Thrower Model NumberSafe Operation Practices for Walk-Behind Snow Throwers Table of Contents Remove Snow Thrower from Carton Assembly / PRE-OPERATIONHOW to SET UP Your Snow Thrower Parts Packed Separately in CartonUnfold Upper Handle Install Speed Control ROD See FigsInstall Auger Control ROD See Figs Install Discharge Chute / Chute Rotater Head See FigCheck Tire Pressure Ignition KEY OperationKnow Your Snow Thrower PrimerRecoil auxiliary starter handle used for starting the engine Meets A.N.S.I. Safety RequirementsTo USE Choke Control See Fig HOW to USE Your Snow ThrowerStopping To USE Fuel SHUT-OFF Valve See FigTo Move Forward and Backward See Fig Using the CLEAN-OUT Tool See FigTo Adjust Skid Plates See Fig To Throw Snow See FigADD Gasoline See Fig Before Starting the EngineScraper BAR See Fig Check Engine OIL Level See FigIf Recoil Starter has Frozen Snow Throwing TipsTo Start Engine Before StoppingLubrication MaintenanceGeneral Recommendations Before Each USEEngine CleaningShear Bolts See Fig Service and AdjustmentsTo Adjust Snow Thrower Height Chute DeflectorTo Replace Belts See Fig Other StorageTroubleshooting Service Notes Exploded KEY Part Description Bearing Plug Auger HousingScrapper BAR Auger BearingAuger Assembly RH Auger Assembly LHPlastic Washer Knob BlackPOP Rivet WasherPulley Pivot LEVER/CABLE Rotator AssemblyRotator Head Rotator Pivot BracketLower Handle Repair Parts Snow Thrower - Model Number PR208 HandlesPanel Bracket LH Panel Bracket RH Handle GripHandle Knob SpacerRetainer Knob REDShifter ROD Bottom Impeller ROD AssemblyTraction ROD Assembly Shifter ROD TOPConsole Panel 01.10.001-BRepair Parts Snow Thrower - Model Number PR208 Drive Control ARM Speed Selector Assembly43 402689 Drive Plate Assembly END PlateClik PIN Axle ShaftRoll PIN 3/16 Sprocket417014X428 Engine Mount Plate KEY Part Description LCT Engine Model PLMHK18600781DPBelt Cover Traction BeltImpeller Belt 187866X417 Repair Parts Snow Thrower - Model Number PR208 WheelsWheel Assembly LH 187831X417Wrench Repair Parts Snow Thrower - Model Number PR208 BAG of PartsSafety Ignition KEY Retainer PINRepair 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.
Top Page Image Contents