Yamaha 350 HP LF350UCC2 Outboard Motor

Description

This is a new Yamaha LF350UCC2 for sale: the counter-rotating, 30 inch shaft, digital control version of Yamaha’s 350 horsepower V8, in its later production form. It ships new in the crate and we deliver worldwide. On big offshore boats with twin, triple or quad F350 UCC2 engines, this is the counter-rotating motor that fills the port positions and balances the boat.

Two things set it apart in the model code. The leading “L” means counter-rotation. The trailing “2” means the later production version. When you are matching a set of big V8s, both details matter, so this page spends some time explaining how to get the match right.

You will also find specs, the boats it suits, rigging, running costs, maintenance and ordering details. If you need help with your setup, contact us.

Yamaha LF350UCC2 for Sale: Quick Overview

• New Yamaha LF350UCC2 V8 outboard
• 350 hp, 5.3 litre V8, DOHC, 32 valves
• Counter-rotation
• 30 inch ultra-long shaft
• Digital electronic throttle and shift
• Later production version
• EFI, electric start, power trim and tilt

If your boat runs UCC2 F350s and you need the counter-rotating engine, the Yamaha LF350UCC2 for sale here is the match.

Specifications

Main figures for the Yamaha LF350UCC2 for sale on this page:

Getting the Match Right

Four details decide whether an engine matches the rest of your set:

1. Rotation. Port positions normally use counter-rotation. That is what the L means.
2. Shaft length. U is 30 inches. All engines on the transom should match.
3. Controls. All digital.
4. Version. The 2 marks the later version. Match your other engines.

If all four line up with your existing engines, the Yamaha LF350UCC2 for sale will slot right in. Its standard rotation partner is the Yamaha F350UCC2. If your engines are the earlier UCC version, look at the Yamaha LF350UCC.

Not sure what you have? The label on the engine bracket shows the full model code. Send us a photo and we will confirm.

Why Counter-Rotation?

Each prop pushes the stern slightly sideways as well as forward. On a multi-engine boat with all props turning the same way, those forces add up and the boat pulls to one side. With counter-rotating engines on one side, the forces cancel. The boat runs straight, turns evenly both ways and backs up cleanly. On a boat with 700 to 1,400 horsepower on the transom, that balance makes a huge difference.

Left-Hand Props

The LF350UCC2 needs left-hand props. Buy props for the whole set together: same diameter, same pitch, correct rotation for each engine. Yamaha has propellers for big engines in both rotations.

Boats That Use It

• Offshore center consoles from about 32 to 45 feet
• Sportfishing and tournament boats
• Express cruisers
• Large catamarans
• Commercial, patrol and rescue boats

V8 Torque

The 5.3 litre V8 produces big torque at modest rpm, which is exactly what heavy offshore boats need. They plane easily, hold speed in rough seas and carry heavy loads without strain. Engines that are not working at their limit tend to last, and the F350 has proven that over years of hard use.

Digital Controls

Digital throttle and shift give light, precise control and clean shifts, even with long distances between helm and transom. The binnacle can synchronise multiple engines, and Yamaha’s digital gauges or compatible displays show detailed data for each one.

Rigging

1. Yamaha digital control binnacle for the number of engines
2. Digital harnesses and hubs
3. Start/stop panels
4. Digital gauges or compatible displays
5. Hydraulic steering for multiple large outboards, with tie bars
6. Independent fuel feeds and water separating filters
7. Cranking batteries for each engine plus house batteries
8. Matched props with correct rotation

Running Costs

Use the octane in the owner’s manual, usually 89, fresh fuel with no more than 10 percent ethanol, and good filters on each engine.

Maintenance

• Oil and filter every 100 hours or yearly
• Gear oil
• Fuel filters and separator elements
• Spark plugs as needed
• Anodes
• Grease fittings and tie bars
• Water pump impellers on schedule

Service all engines together and flush after salt water.

Break-in

Follow the owner’s manual. Vary throttle and change oil after break-in.

The F350 Range

• Yamaha LF350UCC2 for sale (this one): 30 inch, counter, later version
• Yamaha F350UCC2: 30 inch, standard, later version
• Yamaha LF350UCC: 30 inch, counter
• Yamaha LF350XCC2: 25 inch, counter, later version

See all of them in our 350 HP Yamaha section.

Ordering

Condition

New in the factory crate. Photos on request.

Shipping

Worldwide with FedEx, UPS and USPS, crated and tracked. Matched sets can ship together. Ask for a delivered price.

Payment

Order through our shop or ask for an invoice.

Delivery

Inspect the crate before signing. See our refund and return policy and terms.

Warranty

Depends on the country of registration and use. Ask before ordering the Yamaha LF350UCC2 for sale and we will confirm in writing.

Read our reviews or learn more about us.

More From Yamaha

See Yamaha Motor Canada’s F350 page and the Yamaha Outboards website.

Triple and Quad Layouts

Larger boats often run three or four F350s. The exact arrangement of rotations depends on the builder, but common patterns are:

• Triples: counter-rotation on port, standard in the centre and on starboard
• Quads: counter-rotation on the two port engines, standard on the two starboard engines

Always follow your builder’s specification. When replacing an engine, check the model code on the one you are replacing so you get the right rotation. The Yamaha LF350UCC2 for sale fills any counter-rotating position on a 30 inch UCC2 setup.

Multi-engine setups also need properly sized steering with tie bars, independent fuel delivery to each engine and a digital binnacle that handles the number of engines. Use a rigger who has installed big multi-engine Yamaha setups before.

Handling Big Multi-Engine Boats

With digital controls, multiple F350s make low speed handling surprisingly easy for such big boats:

• Pivot by shifting port and starboard engines in opposite directions
• Walk the stern sideways with opposite shifts and a little helm
• Hold position in wind or current with small bursts on each engine
• Use synchronisation at cruise for smooth, efficient running
• Run home on the remaining engines if one has a problem

Some boats add joystick docking, which makes tight marinas even easier. Practise in open water first.

Fuel Layout

Each engine needs its own fuel line and water separating filter. Independent filtration means one clogged filter only affects one engine. Make sure lines and vents suit several V8s at cruise. Carry spare filters on long trips.

Electrical Setup

Give each engine a dedicated cranking battery, add a house bank for electronics and protect cranking batteries with switches or relays. Keep connections clean and tight, use dielectric grease on digital plugs and keep accessories off engine harnesses.

A Canyon Run

To give you a feel for what these engines do, here is a canyon trip on a 39 foot center console with triple F350s, including a Yamaha LF350UCC2 for sale on the port side.

You leave before dawn with full tanks and a crew of six. The three V8s start in sequence and idle quietly. Using the outer engines, you pivot out of the slip and idle through the harbour. Once outside, you bring all three engines up together. Sync matches them, and the boat climbs onto plane smoothly despite the load. You settle at a fast cruise and the display shows total fuel flow and range.

The run out is 80 miles. The sea builds a little, but the 30 inch legs keep all three props deep and gripping. The boat tracks straight because the counter-rotating port engine balances the standard engines. At the canyon you troll all day. In the evening you run home into a moderate head sea, trimmed down, holding a steady speed. Back at the dock in the dark, you pivot into your berth and flush all three engines. That is what big V8 outboards are for.

Offshore Planning

• Use the rule of thirds for fuel
• Watch real fuel flow on the display
• Carry spare filters, prop hardware and tools
• Carry reliable communications and safety gear
• Check weather and file a float plan

Salt Water Care

• Flush every engine after each trip
• Rinse cowlings, brackets, trim rams, steering and tie bars
• Check anodes often
• Spray powerheads with corrosion protectant
• Wax cowlings twice a year

Transom and Bracket Strength

Several F350s add a lot of weight. Make sure the transom or bracket is rated for it, inspect it carefully on repowers, use specified hardware and backing plates, seal every hole and re-check bolts after the first trips and at every service.

Replacing One Engine

If you need to replace a counter-rotating engine from a UCC2 set, the Yamaha LF350UCC2 for sale is a direct match. If your remaining engines have very high hours or are earlier versions, talk to us about whether replacing more than one makes sense. Send model codes, serial numbers and hours.

Common Mistakes

• Wrong rotation for the position
• Right-hand prop on a counter-rotating engine
• Mixing UCC and UCC2 versions without checking
• Wrong shaft length
• Undersized steering, fuel lines or batteries
• Skipping break-in
• Not flushing after salt

Storage

1. Stabilize fuel and run each engine
2. Change oil and filters
3. Change gear oil
4. Grease fittings and tie bars
5. Trim engines down
6. Maintain or disconnect batteries
7. Spray powerheads
8. Cover engines

What Comes in the Crate

The Yamaha LF350UCC2 for sale ships with its paperwork. Controls, gauges, steering and props are separate. Keep the serial number safe off the boat.

Keeping Records

Log hours, services and parts for every engine. Matching records help keep the set in step and add value at resale.

Engine Height and Trim

Start at the builder’s recommended height and fine-tune in sea trials. Props must grip in turns and rough water, and engines should reach 5,000 to 6,000 rpm at full throttle with a normal load. Trim up at cruise until speed stops rising.

Choosing Props for a UCC2 Set

On big multi-engine boats, the prop set is as important as the engines. Most F350 setups use 3 or 4 blade stainless props of large diameter. Four blades usually hold better in rough water and help the boat plane at lower speeds. Three blades may give a little more top speed on calm days. Every prop on the transom should be the same size and pitch, with the correct rotation for each engine. The Yamaha LF350UCC2 for sale needs left-hand props.

During sea trials, test props until all engines reach their correct rpm range with a normal load. Write down the sizes, and carry spares in both rotations on long trips. A bent blade on one engine causes vibration and uneven performance across the set, so repair or replace damaged props quickly.

Gauges and Data

Yamaha’s digital gauges and compatible displays show rpm, trim, fuel flow, hours, voltage, temperature and alarms for every engine. Setting up a clear engine page on your chartplotter is one of the best things you can do on a multi-engine boat. It helps you spot problems early and plan fuel precisely on long trips.

Bracket Boats

Many big center consoles mount their engines on a bracket behind the transom, which often calls for 30 inch shafts like the Yamaha LF350UCC2 for sale. Brackets move the engines aft, can improve the ride and free up cockpit space. Inspect the bracket structure and its attachment to the hull carefully, and check your builder’s specification before ordering.

Commercial Operators

Charter, dive, pilot, patrol and survey operators often run F350s because of their torque and durability. If you are buying a Yamaha LF350UCC2 for sale for commercial work, plan services on hours rather than the calendar, keep common parts in stock, log every engine in detail and schedule maintenance in quieter periods. Check fuel quality regularly, especially when fuelling in different ports. Standardising a fleet on one F350 version, such as UCC2, simplifies parts and training.

Year-Round Boats

If your boat stays in the water all year, run the engines regularly, keep anodes fresh and follow your dealer’s advice on protecting the lower units from marine growth. Flush engines where possible and keep cowlings clean and waxed.

Planning a Full Repower

If you are replacing every engine on a big boat, plan everything before you order: engine version, rotation for each position, shaft length, control binnacle, gauges or displays, steering, fuel system updates, batteries and props. Talk to your rigger about timing. Then order everything together so it arrives at the same time. We can quote matched sets, including the Yamaha LF350UCC2 for sale and its standard rotation partners.

Why Buy From Us

We help you confirm rotation, shaft length and version before you pay. You get a written delivered price and a clear answer on warranty in your country. Photos of the crate and label are available, and we stay in touch after delivery.

Questions to Ask Before Ordering

• Does this position need counter-rotation?
• Is my transom or bracket 30 inches?
• Are my other engines UCC2 versions?
• Is the boat rated for the total horsepower and weight?
• What is the delivered price to my location?
• Which warranty applies in my country?

If anything is uncertain, message us before ordering the Yamaha LF350UCC2 for sale. We will help you get it right first time.

Noise and Comfort

Multiple F350s are far quieter than the big two strokes they often replace. There is no smoke at the dock and no oily smell, and at cruise you can talk at the helm without shouting. On long offshore runs, that makes the whole crew less tired by the end of the day.

Is This the Right Engine for Your Boat?

The Yamaha LF350UCC2 for sale is right if your boat runs two or more F350s on a 30 inch transom or bracket, the position you are filling needs counter-rotation, and your other engines are the UCC2 version with digital controls. It is also a great choice if you are buying a whole new set and want the later version throughout.

It is not right for a single-engine boat, which normally uses standard rotation. It is not right for a 25 inch transom, which needs the LF350XCC2. And if your other engines are earlier UCC versions, the LF350UCC is a better match.

Send us photos of the engine labels and the transom if you are unsure. We will tell you exactly which motor fits, whether it is the Yamaha LF350UCC2 for sale or another model.

Repowering Older Boats

Plenty of older offshore boats run tired two strokes or early four strokes. Repowering with a matched UCC2 set gives better fuel economy, much quieter running, digital controls and detailed engine data. Before ordering, check transom or bracket strength, capacity ratings, steering, fuel delivery, electrical capacity and helm space. A well planned repower can make an older hull feel like a new boat.

Understanding Yamaha Model Codes

Yamaha model codes are a quick way to check a match. Read the Yamaha LF350UCC2 for sale code left to right: L for counter-rotation, F for four stroke, 350 for horsepower, U for the 30 inch shaft, CC for digital control and 2 for the later version. Every engine on your transom should share everything except the leading L, which depends on position.

Running Multiple Big Engines Efficiently

Fuel is the biggest running cost on a boat with several V8s. A few habits make a real difference over a season:

• Find your best cruise. Use the total fuel flow reading to compare miles per gallon at different speeds. Most big boats have a clear sweet spot.
• Trim properly. A big hull trimmed too low pushes a lot of water. Trim up until speed stops rising.
• Keep the bottom clean. Growth on a big hull costs a lot of speed and fuel.
• Match the props. Mismatched or damaged props make engines work harder.
• Carry what you need. Extra water, gear and fuel all add weight.
• Keep engines synchronised. Matched rpm improves efficiency and reduces vibration.

On long trips, these savings add up quickly, and they also extend your range, which is a safety benefit far offshore.

Living With Digital Controls

Digital systems are very reliable when installed and looked after properly. Keep connectors dry and greased, route harnesses away from heat and fuel lines, keep batteries healthy and avoid tapping accessories into engine harnesses. Most problems blamed on digital controls are really caused by low voltage or corroded connections. A quick check of batteries and plugs at each service keeps the Yamaha LF350UCC2 for sale and its partners responding perfectly.

Frequently Asked Questions

Does it need a left-hand prop?

Yes. A counter-rotating engine always needs a left-hand propeller, matched in size and pitch to the rest of the set.

How long will it last?

With good care, big Yamaha four strokes commonly run thousands of hours, including in hard commercial use.

What fuel does it use?

Unleaded at the octane in the owner’s manual, usually 89, with no more than 10 percent ethanol.

Can you supply the whole set?

Yes. We list both rotations. Contact us to quote a matched set including the Yamaha LF350UCC2 for sale.

Is the Yamaha LF350UCC2 for sale new?

Yes, new in the factory crate.

What does LF350UCC2 mean?

L is counter-rotation, F is four stroke, 350 is horsepower, U is a 30 inch shaft, CC is digital control and 2 is the later version.

What do I pair it with?

The standard rotation Yamaha F350UCC2.

Do you ship the Yamaha LF350UCC2 for sale worldwide?

Yes. Ask us for a quote.

Complete Your Set

If the Yamaha LF350UCC2 for sale is right for your boat, add it to your cart or contact us about a matched set. Browse all our Yamaha outboards, see the 200 HP range, or read our blog.