Maintenance (continued)

139/150-Hour Maintenance

Maintenance after first 139-hours,

Ŷ Replace the spark plug annually: Use

Ŷ The valve clearance should be adjusted

then every 150-hours thereafter.

only the type recommended in the

annually or every 135 hours. It is

Ŷ Combustion chamber should be decar-

”Specifications” section or an equivalent

highly recommended that this is

bonized, and the valve clearance should

resistor type spark plug of the correct

done by a Shindaiwa-trained service

be adjusted. It is highly recommended

heat range. Set spark plug electrode

technician.

that this is done by a Shindaiwa-trained

gap to 0.6 -0.7 mm.

 

service technician.

 

 

Valve Adjustment

1.Remove cylinder cover, rocker arm cover, and spark plug. Rotate the crankshaft while observing the piston through the spark plug opening. When the piston

is at the top of the compression stroke (TDC), the valves can be adjusted.

CAUTION!

ŶPerforming a valve adjustment incorrectly may cause hard starting and/or can damage the engine.

ŶIf you are unfamiliar with this engine or uncomfortable with this procedure, consult with an autho- rized Shindaiwa servicing dealer.

2.Loosen adjuster locknut so that the

2.5 mm Allen socket head adjustment screw can turn freely.

3.Insert 0.10 mm feeler gauge between valve stem tip and rocker arm.

4.Turn adjustment screw (clockwise = tighter, counter-clockwise = looser) until feeler gauge is almost snug. Back off just enough to allow gauge to slip out with limited resistance.

5.While holding the adjustment screw in place with the Allen driver, tighten the locknut with a wrench.

6.Turn engine over several times, and returnthe to TDC-compression. Recheck with proper feeler gauge to make sure clearance adjustment did not change as a result of tightening the locknut. Readjust as necessary.

7.Replace rocker arm cover gasket to assure proper sealing and install cover.

IMPORTANT!

If a new gasket is not available and/or the old gasket is not damaged, the old gasket may be reused. Never use cracked or dam- aged gaskets!

Cutter blade adjustment

WARNING!

The cutter blades are very sharp! Always wear gloves when work- ing around the cutter assembly.

Cutting performance of your machine depends a great deal on proper cutter blade adjustment. Properly adjusted blades will oscillate freely yet help prevent binding of cut material between blades. Adjust blades as follows:

1.Loosen all blade locknuts at least one full turn.

2.Tighten each blade shoulder bolt firmly, and then loosen the shoulder bolts 1/4 to 1/2 turn.

3.Working from the gearcase end, lock each bolt in place by firmly tightening its locknut while preventing the shoul- der bolt from turning.

When shoulder bolt adjustment is cor- rect, there should be a gap of 0.25–0.50

mmbetween the cutter blades and the flat washers, and the flat washer beneath each bolt head should turn freely.

CAUTION!

Operating the trimmer with worn or improperly adjusted cutters will reduce cutter performance and may also dam- age your machine. Never operate the machine with damaged or worn cutters.

 

Locknut

Guide Bar

 

Cutter

 

Blades

Washer (should

Shoulder Bolt

turn freely)

Adjusting cutter blades

 

15

Page 14 Page 16
Page 15
Image 15
Shindaiwa AH2510/EVC 139/150-Hour Maintenance, Valve Adjustment, Cutter blade adjustment, Maintenance after first 139-hours
Page 14 Page 16

89310, AH2510, AH2510/EVC specifications

The Shindaiwa AH2510/EVC, AH2510, and 89310 models represent a perfect blend of efficiency, versatility, and durability in the world of handheld outdoor power equipment. These tools are designed for both professional landscapers and avid gardeners, offering cutting-edge features and innovative technologies that make yard maintenance tasks easier and more effective.

One of the standout features of the Shindaiwa AH2510 is its powerful engine. Equipped with a robust two-stroke engine, the AH2510 delivers impressive performance while ensuring high fuel efficiency. This not only allows users to complete their tasks swiftly but also minimizes operational costs. The engine's design reduces emissions, meeting stringent environmental regulations and ensuring a cleaner working environment.

Another highlight of the Shindaiwa AH2510/EVC is its ergonomic design. The equipment comes with a padded handle for comfortable grip and ease of use, reducing operator fatigue during extended use. The lightweight construction of the tools further contributes to their maneuverability, making them ideal for both large areas and intricate landscaping work. Users will appreciate the balance and control afforded by the design, which enables them to navigate varied terrains effortlessly.

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Durability is a hallmark of Shindaiwa products. The AH2510 models are constructed with high-quality materials that withstand the rigors of everyday use, ensuring a long lifespan. Furthermore, the commercial-grade components mean that these tools can handle demanding tasks without compromising performance.

Versatility is another key characteristic of the AH2510 series. This range of tools can be easily adapted for various applications, making them suitable for trimming, pruning, and more. Users can switch attachments seamlessly, transforming their equipment to meet the challenges of different jobs.

In summary, the Shindaiwa AH2510/EVC, AH2510, and 89310 models offer a compelling combination of power, comfort, and adaptability. With their robust engineering, user-friendly features, and environmental consciousness, these tools stand out in the competitive market of outdoor power equipment, catering to the needs of professionals and homeowners alike.
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