YAMAHA 8 HP F8LMHB OUTBOARD MOTOR

Description

We have the Yamaha F8LMHB for sale, new in its factory crate, and we ship it to buyers around the world. It is Yamaha’s 8 horsepower twin cylinder four-stroke on a 20 inch long shaft, with tiller steering, a pull start, forward, neutral and reverse, and a weight of about 89 pounds. It runs from a separate portable fuel tank.

This is the motor for boats that need a long leg and more than a single cylinder can give: heavier small sailboats, boats with outboard wells or tall brackets, small fishing and utility boats with a 20 inch transom, and larger tenders with taller sterns. The twin cylinder engine is smoother and stronger than the 6 HP portables, and the extra five inches of shaft keep the propeller where it belongs. Here is everything you need to know about the Yamaha F8LMHB for sale before you order.

Yamaha F8LMHB Specifications

Yamaha publishes these numbers for the F8 on its 9.9 and 8 HP portable outboards page. The Yamaha F8LMHB for sale is the long shaft tiller version.

Model Code

F is four-stroke, 8 is horsepower, L is the long 20 inch shaft, M is manual start, H is tiller handle and B is the generation. The short shaft equivalent is the Yamaha F8SMHB.

When You Need the Long Shaft

Measure from the top of the transom to the bottom of the hull before ordering the Yamaha F8LMHB for sale. If that is about 20 inches, the Yamaha F8LMHB for sale is the right length. On a sailboat bracket, lower the bracket and check that the prop will sit well under the waterline even when the stern lifts in a wave. On boats with an outboard well, measure the depth of the well and the position of the hull bottom. In almost all sailboat installations, the long shaft is the safer choice.

Why does it matter so much? A propeller that sits too close to the surface draws air down from above, a problem called ventilation. The engine races, the boat loses drive and the motor works harder for less. On a sailboat motoring into waves, it can be the difference between getting into harbour and being stuck outside. The long shaft keeps the prop in solid water.

Sailboats That Suit an 8 HP Long Shaft

Lighter sailboats get by with 4 to 6 HP, while heavier ones are where the Yamaha F8LMHB for sale comes in. Once you get into heavier boats, typically from around 20 to 26 feet depending on displacement, an 8 HP gives a much more comfortable margin. That extra power counts when you are motoring against a headwind and short chop, punching a foul tide through a harbour entrance, or need to stop a heavier boat with reverse as you come alongside.

The twin cylinder engine in the Yamaha F8LMHB for sale is also smoother and quieter than a single, which you will appreciate on long motoring legs. Check your boat’s recommendations and your bracket’s weight rating first, because at 89 pounds this motor is heavier than the singles.

Other Boats It Suits

Not every Yamaha F8LMHB for sale goes on a sailboat. Small fibreglass and aluminium fishing boats with 20 inch transoms are a natural fit, and the 8 gives them a good working speed with a smooth idle for trolling. Utility dinghies at marinas and boatyards often run a long shaft 8 because it starts easily, pushes a loaded dinghy well and keeps going with little attention. Larger rigid tenders with taller sterns also benefit from the longer leg. And on some small motorboats with a 20 inch transom, the 8 serves as a light, economical main engine where the boat is rated for it.

How the Twin Feels on the Water

The first thing owners notice when they move up from a single cylinder is how much smoother the twin is. The Yamaha F8LMHB for sale idles quietly, without the shake you feel through the tiller of a single. At cruising speed it hums rather than buzzes. There is more torque, so the boat pulls away from a standstill more firmly and holds speed better into a chop.

Starting is by pull cord, and the twin is easy to pull over. From cold, use a little choke and expect one or two pulls. Warm, it normally fires first time. Shift only at idle, using the lever on the motor. Reverse is strong and predictable, which is a real help when manoeuvring a heavier sailboat in a crowded marina.

For sailboat use, most owners lock the tiller straight ahead and steer with the boat’s rudder. The rudder gives far more control at low speed. The adjustable steering friction on the Yamaha F8LMHB for sale makes it easy to set the motor so it stays straight.

Fuel Tank Setup

The Yamaha F8LMHB for sale runs from a separate portable tank rather than a tank on the motor. On a sailboat, that is a good thing: a portable tank holds much more fuel and keeps the weight low in the cockpit rather than up on the transom. Choose a secure spot, ideally a ventilated cockpit locker or a strapped-down position in the cockpit, away from the companionway so fumes cannot drift below. Connect the hose, open the tank vent, squeeze the primer bulb until it is firm and start the motor.

When you are sailing, close the tank vent so fuel cannot escape as the boat heels. Use fresh unleaded with no more than 10 percent ethanol, and add stabiliser if the boat will sit for a while.

Installation

Check that your boat and bracket are rated for 8 HP and about 89 pounds. At this weight, get a second person to help lift the motor into place. Clamp it squarely, tighten the clamp screws firmly and fit a safety line. On a transom mount, the anti-cavitation plate should sit at or just below the bottom of the hull. On a bracket, make sure the prop sits well below the waterline with the bracket lowered.

Set the trim rod so the leg is vertical when you are motoring. Connect the fuel, check the oil, start in neutral and watch for the cooling water stream from the tell-tale. Once that is flowing, the Yamaha F8LMHB for sale is ready to go.

Break-In and First Service

Vary the throttle on the Yamaha F8LMHB for sale at low and medium settings for the first hours, avoid long full-throttle runs and check the oil before each outing. When the break-in is complete, change the engine oil. The owner’s manual has the details, and Yamaha’s owner’s manual page has downloadable copies.

Maintenance

After salt water use, flush the cooling system with fresh water and rinse the outside, paying attention to the bracket and clamps. Each season, change the engine oil and gear oil, check the plugs, grease the clamp screws, swivel and tilt points, check the prop and the anode, and look over the fuel filter and hose. Every few seasons, replace the water pump impeller.

Before winter storage, run the carburettor dry or stabilise the fuel, change the oil, flush and store the motor upright somewhere dry. In cold climates, make sure all water has drained from the motor before frost. Look after it this way and the Yamaha F8LMHB for sale will start easily season after season.

Choosing a Bracket for an 8 HP

If you are fitting a bracket for the Yamaha F8LMHB for sale, choose one rated well above 89 pounds and 8 HP. Spring-assisted brackets make lifting a heavier motor much easier. Look for plenty of vertical travel and solid locking positions. Through-bolt it with a backing plate inside the transom. Check that the motor can tilt and turn without hitting the rudder, the backstay or the boarding ladder before you drill any holes.

A Typical Day Under Power

Picture a 23 foot sailboat on a mooring. You lower the Yamaha F8LMHB for sale on its bracket, connect the tank, squeeze the bulb and pull. It starts. You let it idle while you drop the mooring line, then shift into forward and motor out through the moored boats, steering with the rudder. The twin hums quietly. Outside the harbour you turn into the wind, raise the sails, shut down, close the vent and lift the motor clear of the water.

Later, the wind dies and the tide turns against you. You lower the motor, start it and motor home against a short chop. This is where the long shaft and the extra power earn their keep. The prop stays in the water, the motor does not race, and you make steady progress back to the mooring. Reverse stops the boat neatly as you pick up the buoy. That is exactly what an auxiliary should do.

Outboard Wells and Long Shaft Motors

Some sailboats have an outboard well, a hole through the cockpit floor or a lazarette that the motor sits in, rather than a bracket on the transom. Wells keep the motor’s weight closer to the centre of the boat, protect it from the worst of the weather and put the prop under the hull where it rarely ventilates. Many well installations call for a long shaft motor, and the Yamaha F8LMHB for sale is a common choice for them.

If you are fitting a motor in a well, check three things carefully. First, the well opening must be large enough for the motor to tilt up out of the water, or you will need to lift it out when sailing. Second, the motor needs a good supply of fresh air, because an engine running in an enclosed space can starve for air and overheat, and exhaust fumes must be able to escape. Third, the shaft length must put the prop at the right depth below the hull. Measure before you buy, and if you are not sure, send us the measurements and we will help you work it out.

Using It on a Small Fishing or Utility Boat

On a small fishing boat with a 20 inch transom, the Yamaha F8LMHB for sale gives you a good balance of speed, economy and smooth slow running. It gets you to the fishing ground at a comfortable pace and trolls nicely once you are there. Reverse helps you hold position and back up to a snag or a pot. With a 12 or 24 litre portable tank, you can stay out all day.

For utility dinghies, the long shaft keeps the prop deep when the boat is loaded heavily at the stern, which is common when you are carrying gear, tools or people. The twin cylinder engine starts reliably for anyone who needs it, which matters on a shared boat. And the simple, carburetted design means any local mechanic can look after it.

Hot and Cold Climates

We send the Yamaha F8LMHB for sale to buyers in very different climates. In hot and humid places, buy fuel in small amounts, keep tanks shaded, add stabiliser and lift the motor out of the water when moored to slow marine growth. A cover protects the cowling from strong sun. In cold places, use a little more choke on cold mornings, drain all the water from the motor before frost and change the gear oil before winter storage.

What Is in the Crate

The Yamaha F8LMHB for sale arrives assembled with a propeller fitted, the owner’s manual and the factory paperwork. A portable fuel tank may or may not be included depending on the shipment, so ask us if you need one. Before the first start, read the oil tag on the motor and check the engine oil level, because motors are sometimes shipped with little or no oil in the crankcase.

A Word on Warranty

Yamaha’s factory warranty terms vary by country and type of use. Ask your local Yamaha marine dealer what they honour before you buy, and keep your invoice and the motor’s serial number in a safe place. If you need help with paperwork, contact us.

Common Mistakes

The most common one is fitting a short shaft motor on a sailboat bracket when it really needs a long shaft like the Yamaha F8LMHB for sale. The prop ventilates in waves and the motor races. Measure first, and go long when in doubt. Another is leaving the motor in the water while sailing, which slows the boat and lets marine growth build up on the lower unit. Forgetting the tank vent when the boat heels causes fuel leaks. Skipping the safety line has sent many motors to the bottom. And leaving old fuel in the carburettor over winter is the classic reason for a motor that will not start in spring.

Troubleshooting on the Water

If the Yamaha F8LMHB for sale will not start, or starts and then dies, the cause is almost always simple. Check that the tank vent is open and the hose is clipped on properly at both the tank and the motor. Squeeze the primer bulb until it is firm. Make sure the fuel is fresh. If you have been pulling with the choke out on a warm engine, it may be flooded, so push the choke in, open the throttle slightly and pull a few times. Confirm the kill cord clip is in place. Still nothing? Pull the plugs and look at them. A wet, black plug points to flooding or a rich mixture; a dry plug points to a fuel supply problem.

If the motor runs but the cooling stream from the tell-tale is weak, poke a thin wire into the outlet to clear any debris. If it stays weak, the water intake may be blocked with weed, or the impeller may be worn and due for replacement. If the motor revs but the boat does not go, check the propeller for damage or something wrapped around it. Most of these jobs take minutes, which is one of the nice things about a simple, carburetted twin like the Yamaha F8LMHB for sale.

Keep a spare plug, a plug spanner and a small tool kit aboard, and you will rarely be stuck.

Running Costs

The Yamaha F8LMHB for sale is economical to own. Fuel use at a sensible cruise is modest, oil changes need under a litre, and the wear parts are cheap and widely available. There is no battery to replace and no electronics to repair. For a sailboat that motors a few hours each weekend, the yearly running cost is very small.

Why Yamaha

Sailors travel, and they need support wherever they end up. Yamaha’s dealer network covers almost every coast, so parts and service for the Yamaha F8LMHB for sale are easy to find. The 212 cc twin is a proven, smooth engine. It holds its value well, and a Yamaha on the bracket is a reassurance to anyone buying your boat in the future.

Long Shaft Options Compared

For a lighter boat, the Yamaha F6LMHA may be enough. For a heavier sailboat that needs maximum push, the Yamaha T9.9LPHB high thrust is worth a look. Our 8 HP Yamaha section and the complete Yamaha range list everything we stock.

Ordering

Add the Yamaha F8LMHB for sale to your cart and check out, or contact us with any questions first. We confirm stock and delivery, pack the motor in its factory crate with extra protection and send tracking once it ships. We deliver worldwide. International buyers pay their own import duty and taxes, and we provide the documents customs needs. Our refund and return policy, terms and conditions, customer reviews and about us page are all on the site.

FAQ: Yamaha F8LMHB for Sale

Is it new?

Yes, the Yamaha F8LMHB for sale is new and crated.

Does it have a built-in fuel tank?

No, it uses a separate portable tank.

Is it electric start?

No, pull start. Electric start is available on some F9.9 and T9.9 models.

Does the Yamaha F8LMHB for sale have reverse?

Yes, forward, neutral and reverse.

Will it fit my sailboat bracket?

If the bracket is rated for at least 8 HP and around 89 pounds, very likely. Check prop depth with the bracket down.

How heavy is the Yamaha F8LMHB for sale?

About 89 pounds.

Can the Yamaha F8LMHB for sale be used in salt water?

Yes, flush with fresh water after each use.

Propeller included?

Yes.

Final Thoughts

And if you are still unsure between the 8 and the 9.9 for your boat, send us your boat’s length, weight and transom height and we will tell you honestly which one we would pick.

If you are weighing this motor against a used one, remember that a new motor comes with a known history, fresh seals and impeller, a clean carburettor and no hidden corrosion. On a sailboat where the engine is your safety margin in a harbour entrance, that peace of mind is worth a lot.

For a heavier small sailboat, a 20 inch fishing boat or a tall-sterned tender, the Yamaha F8LMHB for sale offers the smoothness of a twin, a long leg that keeps the prop deep, and Yamaha’s worldwide support. Add it to your cart when you are ready, or send us a message and we will help you check it is the right fit. The rest of our range is in the shop.