Check Coolant LevelBe certain the emergency safety stop switch is disconnected andthe shifter/throttle is in neutral. Open the engine compartment hatchand locate the coolant reservoir. The reservoir will be located on theport side of the engine between the manifold and the intake diagonallybehind the alternator. The reservoir features a “FULL” marking. Thisis not the same as filling the reservoir until it is completely full. Thereservoir requires expansion room while in operation; therefore, theFULL marking is slightly lower than the top of the tank.Never open the coolantreservoir when the enginehas been running. This checkshould be done prior to starting the engine. During operation,pressure builds up in the reservoir. Opening it before thecooling system has had time for pressure relief likely willresult in an eruption of fluid. It will also be sufficiently hot toseriously burn skin. Always allow sufficient time for the fluidto cool and return to pre-operation levels.It may be necessary to periodically add coolant as a smallamount of evaporation occurs naturally. When adding coolant, useonly a 5-year, extended warranty antifreeze (propylene glycol),either a premixed 50/50 mix or create a mix of 50 percent extended-warranty antifreeze plus 50 percent distilled water. (Do not use tapor other water as other elements in the water can cause build-upsMalibu has determined that the use of Corrosion Block isnecessary to ensure long life for metal components. The use ofCorrosion Block, available at www.corrosionblock.com, as directedon the bottle or can is required to keep the warranty in force.Corrosion Block comes in aerosol spray, liquid that can be placed inyour own spray bottle, or as a grease.Avoid getting Corrosion Block on other, non-metal surfaces,particularly vinyl seats or soft-grip flooring. If this occurs, cleanimmediately as directed by the product’s directions to avoidstains that are also not covered under warranty.Failure to use CorrosionBlock as directed on theproduct label will resultin the nullification of theMalibu warranty in instances of corrosion damage.Failure to clean Corrosion Block off non-metal surfacescan result in damage that is not covered under warranty.Malibu uses only marine-rated and marine-gradefasteners on all models. If,at any time, it is necessary to replace any fasteners, seekguidance from an authorized Malibu dealer to ensure thatsuch replacements meet the requirements for operation ina marine environment.2019 Malibu Boats, LLC Owner’s Manual • Page 178Before Starting the Enginehttps://www.boat-manuals.com/
