Jet Drive Frequently Asked Questions

What is the proper flushing procedure for my engine?

Refer to owner's or service manual for specifics. The procedure will vary depending on the engine and what flushing attachment is being used.

Can I get a different impeller to increase boat performance from Mercury Marine?

We do not recommend or offer alternative impellers for our Jet Drive products.

What type of engine oil should I use in my Jet Drive?

Quicksilver or Mercury Precision Premium-Plus lubricants NMMA/BIA certified TC-W3 2-cycle outboard oil or equivalent.

OptiMax oil on DFI models.

You may visit Premium Plus 2-cycle Outboard Oil page of this website for more information.

What type of gear oil is used in the pump on my Jet Drive?

Use Mercury High Performance Gear Lube, which is available in several different size containers:

10 oz. (296 ml) tubes, part no. 92-802851A1;
32 oz. (946 ml) plastic bottles, part no. 92-802854A1;
2 1/2 gal. (9.461 l) plastic bottles, part no. 92-802856A1

You may visit High Performance Lube page of this website for more information.

Who provides warranty service for my Jet Drive?

Any certified Mercury Outboard or Mercury Jet Drive servicing dealer can provide service (including warranty service) on your Mercury Jet Drive product. These dealers can also order and sell Mercury Jet Drive parts.

Use our Dealer Network to find Brunswick Marine in EMEA authorized dealers.

Where can I get parts for my Jet Drive?

Any certified Mercury Outboard or Mercury Jet Drive servicing dealer can provide service (including warranty service) on your Mercury Jet Drive product. These dealers can also order and sell Mercury Jet Drive parts.

Use our Dealer Network to find Brunswick Marine in EMEA authorized dealers.

What is the recommended fuel for my Jet Drive?

USA/CANADA

Use regular unleaded gasoline with 87 octane [(RON+MON)/2] specification.

International

Use regular unleaded gasoline with 90 octane RON* specification

*RON stands for "Research Octane Number". If the RON is too low, acceleration knocks occur (these are usually audible)

an I leave my jet boat in the water, or should I put it back on the trailer every night?

The Mercury Jet Drive is protected against corrosion, even if left in the water. However, like all types of boats when left in the water for extended periods of time, algae and barnacles may begin to grow on the surfaces of the jet that are underwater. These growths can rob your boat of performance and can block passages in the cooling system over time.

What type of protection does Mercury offer against corrosion?

The Mercury Jet Drive utilizes a patented XK360 aluminum alloy with low copper content to provide the best material to protect against corrosion. We cover this aluminum with a hard-anodizing and multi-step paint process which produces a superior protective layer against the elements. All exposed fasteners, shafts and impellers are stainless steel, and multiple self-sacrificing anodes are used to further protect the Jet Drive. All of this protection is backed by an industry-leading 3-year corrosion failure warranty.

What is the shallowest water I can drive my jet boat in?

Because the jet pump will suck loose objects, including rocks and sticks, from the bottom, we recommend maintaining at least 3 feet clearance between the boat bottom and the bottom of the lake or river.

How do I keep the weeds out of the inlet grate?

1997 and newer models can use the Hydro Surge gate with auto weed clean-out system. For older models there is a weed rake.