Troubleshooting Guide (continued)

ADDITIONAL PROBLEMS

Symptom

 

 

Possible Cause

 

Remedy

 

 

 

 

 

 

Clogged air filter.

 

Clean the air filter.

Poor acceleration.

 

 

Clogged fuel filter.

 

Replace the fuel filter.

 

 

 

 

 

 

 

 

 

 

 

Lean fuel/air mixture.

 

Consult with an authorized servicing dealer.

 

 

 

Idle speed set too low.

 

Adjust: 3,000 (

250) RPM (min-1)

 

 

 

 

 

 

 

 

Switch turned off.

 

Reset the switch and and restart.

 

 

 

 

Engine stops abruptly.

 

 

 

Fuel tank empty.

 

Refuel. See page 10.

 

 

 

 

 

 

 

 

 

 

 

Clogged fuel filter.

 

Replace fuel filter.

 

 

 

Water in fuel.

 

Drain; replace with clean fuel. See page 10.

 

 

 

Shorted spark plug or loose terminal.

 

Clean and replace spark plug, tighten the terminal.

 

 

 

Ignition failure.

 

Replace the ignition unit.

 

 

 

Piston seizure.

 

Consult with an authorized servicing dealer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ground (stop) wire is disconnected or

 

Test and replace as required.

 

 

 

 

Engine difficult to shut off.

 

 

 

switch is defective.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overheating due to incorrect spark plug.

 

Idle engine until cool.

 

 

 

 

 

Clean and regap the plug to 0.024 - 0.028

 

 

 

 

 

inch (0.6 - 0.7 mm). Correct plug: NGK BPMR6A

 

 

 

 

 

or equivalent resistor type spark plug of the

 

 

 

 

 

correct range.

 

 

 

 

 

 

Overheated engine.

 

Idle engine until cool.

 

 

 

 

 

 

 

 

Engine idle too high.

 

Set Idle: 3,000 (

250) RPM (min-1)

Cutting attachment rotates

 

 

 

 

 

 

 

 

 

 

 

at idle.

 

 

Broken clutch spring or worn clutch

 

Replace spring/shoes as required, check

 

 

 

 

 

 

 

spring boss.

 

idle speed.

 

 

 

 

 

 

Loose attachment holder.

 

Inspect and re-tighten holders securely.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine idle set too high.

 

Set Idle: 3,000 (

250) RPM (min-1)

Engine will not idle down.

 

 

 

 

 

 

Engine has an air leak.

 

Consult with an authorized servicing dealer.

 

 

 

 

 

 

 

 

 

 

 

ADDITIONAL PROBLEMS

 

Symptom

 

Possible Cause

 

Remedy

 

 

 

Warped or damaged cutting attachment.

 

Inspect and replace attachment as required.

 

Excessive vibration.

 

 

 

 

Loose gearcase.

 

Tighten gearcase securely.

 

 

 

 

 

 

 

 

 

 

 

Bent main shaft/worn or damaged

 

Inspect and replace as necessary.

 

 

 

bushings.

 

 

 

 

 

Trimmer line not wound properly on spool.

 

Rewind trimmer line.

 

 

 

 

 

 

 

 

 

 

 

 

 

Shaft not installed in powerhead or

 

Inspect and reinstall as required.

 

 

 

 

 

Cutting attachment will

 

 

 

gearcase.

 

 

 

 

 

 

 

not rotate.

 

 

 

 

 

 

 

 

 

 

 

Broken shaft.

 

Consult with an authorized servicing dealer.

 

 

 

 

 

 

 

 

 

 

 

 

Damaged gearcase.

 

 

 

 

 

 

 

19

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Shindaiwa 81644 manual Additional Problems
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81644 specifications

The Shindaiwa 81644 is a remarkable piece of equipment designed for professionals in landscaping and agriculture. Renowned for its durability and performance, this model is an essential tool for anyone in need of a reliable, high-efficiency solution for their yard care and maintenance projects.

One of the standout features of the Shindaiwa 81644 is its powerful engine. The unit is equipped with a robust 25.4 cc 2-stroke engine that delivers an impressive power-to-weight ratio, ensuring efficient operation without compromising on performance. This kind of engine is designed for easy starting and provides a reliable output that allows users to tackle even the most challenging tasks with ease.

Another key characteristic of the Shindaiwa 81644 is its lightweight design. Weighing in at approximately 7.9 lbs, this model is designed to reduce operator fatigue, allowing for extended use without added strain. The ergonomic handle further enhances comfort, enabling a natural grip and offering better control during operation.

Technologically, the Shindaiwa 81644 incorporates advanced anti-vibration technology. This feature minimizes vibrations during use, ensuring a smoother experience while reducing the risk of operator fatigue. Additionally, the unit includes an adjustable throttle, allowing users to optimize their cutting speed based on the specific job at hand.

The durability of the Shindaiwa 81644 is another highlight. Constructed with high-quality materials, this equipment is built to withstand the rigors of regular use in various weather conditions. Its fuel-efficient engine also represents Shindaiwa's commitment to sustainability, minimizing environmental impact while maximizing performance.

For convenience, the Shindaiwa 81644 is designed with an easy-to-access air filter and spark plug, simplifying maintenance. This ensures that operators can keep their equipment in top condition with minimal effort.

In summary, the Shindaiwa 81644 combines power, efficiency, and user-friendly features, making it one of the most sought-after options for professionals looking to enhance their landscaping tools. Whether for commercial or personal use, this model stands out as a reliable choice that meets the demands of any outdoor maintenance project.
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