MAINTENANCE

Disconnect spark plug wire before performing any maintenance (except carburetor adjustment) to prevent accidental starting of engine.

Prevent fires! Keep the engine free of grass, leaves, spilled oil, or fuel. Remove fuel from tank before tipping unit for maintenance. Clean muffler area of all grass, dirt, and debris.

Do not touch hot muffler or cylinder fins as contact may cause burns.

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service classification SF-SJ. Select the oil’s SAE viscosity grade according to your expected temperature.

SAE VISCOSITY GRADES

 

 

 

 

 

 

 

 

 

 

SAE 30

 

 

 

 

 

 

5W-30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F

-20

0

 

 

30 32 40

 

60

80

100

C

-30

-20

-10

0

10

20

30

40

TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE

FIG. 11

NOTE: Although multi-viscosity oils (5W-30, 10W-30, etc.) improve starting in cold weather, these multi viscosity oils will result in increased oil consumption when used above 32°F (0°C). 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 tiller 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. Add SAE 30 motor oil or equivalent. Tighten oil filler plug securely each time you check the oil level.

TO CHANGE ENGINE OIL (See Figs. 11 and 12) Determine temperature range expected before oil change. All oil must meet API service classification SF-SJ.

•Be sure tiller is on level surface.

•Oil will drain more freely when warm.

•Catch oil in a suitable container.

•Remove drain plug.

•Tip tiller forward to drain oil.

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

•Remove oil filler plug. Be careful not to allow dirt to enter the engine.

•Refill engine with oil. See “CHECK ENGINE OIL LEVEL” in the Operation section of this manual.

OIL

DRAIN

PLUG

OIL FILLER

OIL LEVEL

PLUG

 

FIG. 12

AIR CLEANER (See Fig. 13)

Service air cleaner cartridge every twenty-five hours, more often if engine is used in very dusty conditions.

•Loosen air cleaner screws, one on each side of cover.

•Remove air cleaner cover.

•Carefully remove air cleaner cartridge. Be careful. Do not allow dirt or debris to fall into carburetor.

•Clean by tapping gently on a flat surface.

•If very dirty or damaged, replace cartridge.

•Clean and replace cover. Tighten screws securely.

CAUTION: Petroleum solvents,such as kerosene, are not to be used to clean cartridge. They may cause deterioration of the cartridge. Do not oil cartridge. Do not use pressurized air to clean or dry cartridge.

AIR CLEANER CARTRIDGE

COVER

AIR

CLEANER

SCREW

FIG. 13

11

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Image 11
Poulan HDF550L owner manual Engine, AIR Cleaner See Fig
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HDF550L specifications

The Poulan HDF550L is a versatile and powerful handheld string trimmer designed for homeowners and professional landscapers alike. Engineered for efficiency and usability, this tool combines advanced technology with user-friendly features, making yard maintenance a breeze.

One of the standout features of the HDF550L is its robust 50cc, 2-cycle engine. This powerful engine provides ample torque and speed, enabling users to tackle thick grass, weeds, and overgrown areas with ease. The engine's design prioritizes fuel efficiency and reduced emissions, adhering to environmental standards while allowing for extended use without frequent refueling.

The HDF550L is equipped with a dual-line bump feed head, which allows for quick line adjustments during operation. This feature eliminates the need for complex line replacement procedures, saving users valuable time. The trimmer's .095-inch line thickness ensures optimal performance, cutting through tough vegetation smoothly and effectively.

Another significant characteristic of the Poulan HDF550L is its lightweight construction, weighing in at just under 12 pounds. This design enhances maneuverability, allowing users to navigate around garden beds, trees, and other obstacles effortlessly. The adjustable straight shaft provides additional reach and comfort, making it suitable for both tall and short users.

To enhance user experience, the HDF550L incorporates an ergonomic handle with a soft grip. This reduces fatigue during prolonged use, ensuring that users can maintain their trimming tasks without discomfort. Moreover, the integrated anti-vibration technology minimizes vibrations transmitted to the operator's arms, making extended operation smoother and more enjoyable.

The Poulan HDF550L also features easy-start technology, which simplifies the ignition process. With just a few pulls, users can get the trimmer up and running, reducing frustration during those busy lawn care days. This technology is especially beneficial for novice users who may struggle with starting traditional 2-cycle engines.

In summary, the Poulan HDF550L is a powerful and efficient string trimmer, ideal for tackling a wide range of landscaping tasks. Its combination of a powerful engine, user-friendly features, and lightweight design makes it a top choice for anyone looking to maintain their yard in pristine condition. Whether you're battling overgrown weeds or maintaining perfectly trimmed borders, the HDF550L provides the reliability and performance needed to get the job done efficiently.
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