Humminbird 788ci HD & 788ci HD DI Combo - Operations Manual - Safety Warnings and Compliance Statements

Oct 23, 2026

Operations manual for the Humminbird 788ci HD and 788ci HD DI Combo fishfinders, introducing reliable marine use, warranty and service policy information, and guidance to read the manual for full feature utilization. Includes customer support contact details, multiple safety warnings about navigation aid misuse, disassembly restrictions, high-speed travel with the cover, and California chemical hazard notice. Provides WEEE and ROHS compliance statements plus international customer guidance and trademark notices.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages181

Reading Time7 h 36 min

AccessFree to download

Safety Warnings

Warranty and Service Policy

Environmental Compliance (WEEE/ROHS)

International Customer Information

Trademarks and Notices

Operations Manual 788ci HD & 788ci HD DI Combo 531833-2EN_A Thank you for choosing Humminbird®, America's \#1 name in fishfinders. Humminbird® has built its reputation by designing and manufacturing top-quality, thoroughly reliable marine equipment. Your Humminbird® is designed for trouble-free use in even the harshest marine environment. In the unlikely event that your Humminbird® does require repairs, we offer an exclusive Service Policy -free of charge during the first year after purchase, and available at a reasonable rate after the one-year period. For complete details, see the separate warranty card included with your unit. We encourage you to read this operations manual carefully in order to get the full benefit from all the features and applications of your Humminbird® product. Contact our Customer Resource Center at 1-800-633-1468 or visit our Website at [humminbird.com](humminbird.com). WARNING! This device should not be used as a navigational aid to prevent colision, grounding, boat damage, or personal injury. When the boat is moving, water depth may change too quickly to a low time for you to react. Always operate the boat at very slow speeds ifyou suspect sha low water or submerged objects. WARNING! Disassembly and repair of this electronic unit should only be performed by authorized service personnel. Any modification of the serial number or attempt to repair the original equipment or accessories by unauthorized individuals wil void the warranty. WARNING! This product contains chemicals known to the State of California to cause cancer and/or reproductive harm. WARNING!Do not travel at highspeed with the unitcoverinsta led. Remove the unitcover before traveling at speeds above20 mph. NOTE: The ilustrations in this manual may not look exactly like the display on your Humminbird® model, but your model wil work in the same way. NOTE: Some features discussed in this manual require a separate purchase, and some features are only available on international models. Every effort has been made to clearly identify those features. Please read the manual carefulyin order to understand the ful capabilities ofyour model. ENVIRONMENTAL COMPLIANCE STATEMENT: Itis the intention of Humminbird® tobea responsible corporate citizen, operating in compliance with known and applicable environmental regulations, anda good neighborin the communities where we make or sel our products. WEEE DIRECTIVE: EU Directive2002/96/EC “Waste of Electrical and Electronic Equipment Directive (WEEE)” impacts most distributors, selers, and manufacturers of consumer electronics in the European Union. The WEEE Directive requires the producer of consumer electronics to take responsibility for the management of waste from their products to achieve environmentaly responsible disposal during the product life cycle. WEEE compliance may not be required in yourlocation for electrical & electronic equipment (EEE), nor may it be required for EEE designed and intended as fixed or temporary instalation in transportation vehicles such as automobiles, aircraft, and boats. In some European Union member states, these vehicles are considered outside of the scope of the Directive, and EEE for those applications can be considered excluded from the WEEE Directive requirement. This symbol (WEEE wheelie bin) on product indicates the product must not be disposed of with other household refuse. It must be disposed ofand colected for recycling and recovery of waste EEE. Humminbird® wil mark al EEE products in accordance with the WEEE Directive. It is our goal to comply in the colection, treatment, recovery, and environmentaly sound disposal of those products;however, these requirements do vary within European Union member states. For more information about where you should dispose ofyour waste equipment for recycling and recovery and/or your European Union member state requirements, please contact your dealer or distributor from which your product was pu

FAQs

What should users do regarding warranty service and repairs?

The manual states that warranty repairs are covered during the first year under an exclusive service policy, and that disassembly and repair should only be performed by authorized service personnel to avoid voiding the warranty.

Can the device be used as a navigational aid?

No. The manual warns that the device should not be used as a navigational aid to prevent collision, grounding, boat damage, or personal injury.

What do the WEEE and ROHS statements require?

The manual explains that WEEE rules affect disposal responsibilities for electrical and electronic equipment, and provides a ROHS-related statement about scope and hazardous substance restrictions under specific directives.

Oct 23, 2026

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