10/15-Hour Maintenance

Clean the

spark plug and

check the gap

0.024–0.028 inchat the electrode. (0.6–0.7 mm)

Figure 27

Every 10 to 15 hours of operation:

Remove and clean the spark plug. Adjust the spark plug electrode gap to 0.024 - 0.028 inch (0.6 - 0.7 mm). If the spark plug must be replaced, use only an NGK BPMR6A or equivalent resistor type spark plug of the correct heat range. See Figure 27.

CAUTION!

Before removing the spark plug, clean the area around the plug to prevent dirt and debris from getting into the engine’s internal parts.

50-hour Maintenance

Every 50 hours of operation (more frequently in dusty or dirty conditions):

nRemove and clean the cylinder cover and clean grass and dirt from the cylin- der fins.

nRemove the cutting attachment, cutting attachment holder and gear shaft collar. Remove the filler plug from the side of the gear case and press new grease into the gear case until old grease is pushed out. Use only lithium-base grease such as Shindaiwa Gear Case Lubricant or equivalent. See Figure 28.

nLubricate main shaft splines.

nUse a hooked wire to extract the fuel filter from inside the fuel tank.

See Figure 29.

CAUTION!

Make sure you do not pierce the fuel line with the end of the hooked wire. The line is delicate and can be dam- aged easily.

Remove and replace the filter element. Before reinstalling the new filter element, inspect the condition of all the fuel system components (fuel pick-up line, fuel return line, tank vent line, tank vent, fuel cap and fuel tank). If damage, splitting or deteriora- tion is noted, the unit should be removed from service until it can be inspected or repaired by a Shindaiwa-trained service technician.

New

Grease

Old

Grease

Gear Shaft

Collar

Figure 28

Hooked

Filter Element

Wire

 

Figure 29

15

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Image 15
Shindaiwa 81644 manual 10/15-Hour Maintenance, Every 10 to 15 hours of operation

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.