40 hp mercury outboard. Drill four mounting holes using a 17/32 in.

The new tiller is compatible with Mercury four stroke outboard engines in the 40 through 115 horsepower range. However, you can look upon it as a electric choke for operating purposes. 7L (350 cubic inch) block with quad camshafts that drive a larger gearcase and Revolution X™ prop Authorized Honda Outboard Dealership. 00 $ 3,427. Sierra 18-5610 Marine Starter for Mercury & Mariner Outboard Features 8 Tooth; Fits 100, 115, 125 Hp 4 Cyl. 40-50 Hp – Non-Thumb Screw Models a - Non-Thumb Screw 6. Also featured on 4 HP Mercury outboards is an integrated fuel tank for true grab-and-go portability. Please view the application guide below. 5 Mercury engines have a rated capacity of 15. Reliable and durable. Drill four mounting holes using a 17/32 in. Jul 9, 2009 · 1. TwoStroke 2. 5 to 20hp FourStroke outboards empower you to enjoy the water on your terms and reach places you wouldn’t dare venture with other engines. and 40-60 HP 4Cyl. Step 2. Please contact us with any questions. Rugged durability. After identifying the parts you need, contact your Mercury Authorized Dealer for assistance or to place an order. $275 Dealer Engine Prep - Our factory qualified 40 HP. 2019 Mercury 50 HP 50ELPT Command Thrust Outboard Motor. Please feel free to contact us for assistance. This means paying about $1000 more to get a 33% more powerful motor from a 30HP to a 40HP outboard. Our FourStroke jet outboards are electronic fuel injected, with a range from 25 to 40 horsepower. Day in and day out, a 40 or 60hp SeaPro™ outboard is a co-worker you can count on. Honda's BF40D4LRTA Outboard - Steering: Remote Mechanical, Starter: Electric, Shaft: 20" Long, Power Trim & Tilt. 5-20hp. How to Replace Mercury 40HP Water Pump. 6 GPH | Mercury 150 efi : 14. EFI 4-Stroke Outboards (s/n 0T409000 & up) Add to Cart Go Where Others Won’t. Alternator amp / Watt. Color. 15" shaft, tiller steer (with new advanced tiller), electric start. External tank connection is standard which makes adding an external fuel tank and line quick and easy The advanced design of the Mercury Spitfire Pontoon four-blade aluminum propeller maximizes blow-out resistance, with extra blade area for outstanding hold in turns and extra thrust around the dock that pontoon boaters need and demand. Position outboard so the anti-ventilation plate is 2. While the adjustments seem minor, both affect the No matter the adventure, a Mercury Jet outboard will get you there. 115 - 140 - 150 HP Outboards. MID RANGE. With increased performance at lower rpm, SeaPro outboards are engineered to deliver more power with less engine stress. 0L displacement outboard when hit the scales at 225 Hp. The parameters for adjusting the carburetor on a Mercury outboard involve both the idle speed screw that controls the motor's speed at idle, and the mixture screw that controls the fuel-to-air ratio. È semplice. 50 hp mercury outboard for sale and get the best deals at the lowest prices on First Class outboards ! Great Savings & Free Delivery / Buy Now ! Jet 25 – 40 HP. - +. Our 747-cc 40-hp midrange provides powerful performance in a compact package that’s available in both propeller and jet-pump driven models. 5-60hp. Now your motor’s fuel system will be ready to go next season. There are plenty of good reasons these Mercury outboards rule the water. 200 - 225 - 250 HP Outboards. Founded in 1939 by the talented engineer-businessman Carl Kiekhaefer, the Mercury brand of boating engines are found as factory equipment with many 40-60 FourStroke Engine Maintenance - Changing Fuel Filter. net including 40hp motors at the lowest prices guaranteed. The bore for this outboard is 2. $305. PORTABLE 2. Mercury SeaPro™ outboards are built to handle the heavy-duty needs of commercial boating applications. Mercury 25 and 30hp FourStroke outboards make light work of your biggest adventures. Quicksilver 35-879884T Fuel Filter Quicksilver 35-879884T Fuel Filter is an aftermarket replacement filter for Mercury 4-Stroke Outboards. Ci sono posti che vuoi visitare, e la gamma di fuoribordo Mercury FourStroke da 40 a 60 hp è il modo più semplice per raggiungerli. FourStroke (2,5-225 CV) FourStroke 40-60hp. All information received will always remain confidential. Great for aluminum tiller, aluminum console, inflatable rigid hull (RIB) and soft hull, watersports, and fish & ski boats. 27-822420A94. MOTOR SPECIFICATIONS. Authorized Honda Outboard Dealership. 9 GPH | Mercury Verado 225 efi : 23. Evinrude Boat Propellers. Learn More. Sale price does not include rigging or controls. You may also find the NGK spark plug code helpful. 7L 350 & 400HP Outboards. 49. 60 HP. The Spitfire Pontoon propeller is available for 40 – 60hp Command Thrust engines in 10-, 11- and 13-pitch sizes. Mercury Boat Propellers. None More Durable. Fond du Lac, Wis. Short description: Mercury® jet-drive outboards are specifically designed to pilot boats in shallow waters where propeller-driven hulls are unable to operate. The engine weight is recorded at 177 lbs. Calibrated to reach maximum torque at lower rpms, they provide more power with less stress on the motor. Enjoy classic TwoStroke speed, power and performance thanks to high-displacement powerheads and exceptionally lightweight designs. The 2. Mercury Jet outboards are built capable enough to handle your endless drive for outdoor adventure. View and Download Mercury 40 operator's manual online. Powerboats & Motorboats. Clymer Marine and PWC manuals are the #1 source for DIY maintenance, troubleshooting and repair. Honda's BF40D4LHA Outboard - Steering: Tiller, Starter: Electric, Shaft: 20" Long, Power Trim & Tilt. <br /><br />The RED lever on the primer solenoid should be over top of the solenoid, pointing directly at the other end of the solenoid to be in the automatic mode. Black. Also for: 50, 60. High Power. 0 GPH | Mercury 400R Racing : 33. There’s a 9. 5hp engines all the way up to adrenaline-pumping 300hp powerhouses, the entire FourStroke outboard family features efficient, lightweight designs that ensure no power goes wasted. 1 GPH | Mercury Verado 250 efi : 27. Get In Touch. Engine Type: Mercury 40EPT Inline 3 Four Stroke; Horsepower: 40hp; Cylinders: 3 cyl; Shaft Length: 15″ Short; Steering: Remote Mechanical; Starting: Electric It is important to get that treated fuel into the entire fuel system by running the boat for about 10 minutes, either in the water or while connected to a garden hose (follow owner’s manual instructions if using a hose). Like electronic fuel injection. -5% Add to cart. On-board digital monitoring that protects your engine. You can search by engine model or serial number to see detailed engine diagrams and part numbers. 1 - 20 of 20 Items. 60 GPH | Mercury 90 efi : 10. Features: Forward, Neutral and Reverse shift Electronic fuel injection Water Cooled Smart Craft ready 18 Amp Alternator Gas assist tilt Color: Black Specifications: Engine Type: 4-Stroke Propshaft HP: 40 hp 3-Cyl 3. Downloads. Commercial Outboards. Mercury 40 - 300hp FourStroke Outboard Maintenance: Changing Gear Lube. Of the other low-emission 40hp outboards, only the Yamaha F40F and Tohatsu DFI TLDI 40 outboards are lighter. 7L V10 350 and 400hp Verado® outboards continue the legendary Verado engine family’s legacy of providing premium marine performance. Installation, controls, and rigging accessories are available for purchase. The outboard did a little bit of grinding and some clicking noises and never went into Chase big fish or big adventures with all-new Mercury 8 and 9. Mercury FourStroke outboards are made to unlock the inaccessible. Features. Horsepower. Call for price. From portable 2. Engine only, must be installed by factory dealer to validate warranty. Known for their reliability and performance, these engines have become a popular choice for boating enthusiasts worldwide. FourStroke outboards bring big capabilities to small vessels. Every job has its share of surprises, but a SeaPro outboard won’t be one of them. our 40 hp mercury outboard motor is on a pontoon boat. Get to the Fish, Fast. However, the same $1000 only gets you a 25% increase in power between a 40HP and 50HP 2019 Mercury 40 HP 40ELPTBT Outboard Motor. Local Pickup. Condition: New. Shop the best selection of 494 outboard motors & inboard. Get on plane faster – and stay there longer at lower speeds. Operate your boat at normal cruising speed, trimmed to the desired position. Find a Dealer. 2 GPH | Mercury Verado 200 efi : 19. The process of developing this tiller began with listening. They’re reliable, compact, lightweight, easy to install and simple to Deep-breathing, high-winding, rugged and reliable. Sierra 18-7807 Fuel Pump Kit for Mercury and Mariner Outboards Sierra 18-7807 Fuel Pump Kit is a replacement kit for Mercury and Mariner Outboards. Shipping: Ready to Ship Now. FourStroke 90-115hp Command Thrust. $3,258. Increased fuel economy and outstanding overall performance. Find outboard engine specs, 40 - 50 HP Outboards. It is everything you need to get more out of your time on the water. A few of the functions the instrument package will display are engine RPM, coolant temperature, battery voltage, fuel consumption and engine operating hours. Remove the rubber water tube seal from the top of the water pump assembly. Step 1. Our 1-liter F60 Jet Drive outboard produces 40 hp at the pump. More low-end torque for excellent acceleration. 40 GPH | Mercury 50 efi : 4. #1. Engineered for Commercial: Engineered to deliver longer engine life while Dec 4, 2022 · Well, that depends on its model. Pre-Owned: Evinrude. 3-year Mercury Platinum engine warranty plus a FREE +2 year Mercury Gold extended engine warranty. Mercury Outboards. Impressive torque. Honda Marine - 4-stroke outboard motors from 2 to 250 hp. $214. Payment Method Options: Pay with Check. The later model engines have a primer solenoid, not a choke. Because there’s no lower unit extending below the hull, they can get you over obstacles to places where other boaters in propeller-driven boats can’t or aren’t willing to go. 40 outboard motor pdf manual download. All Sierra aftermarket parts are manufactured to meet or exceed OEM requirements. 1 / 1. The serial No matter the adventure, a Mercury Jet outboard will get you there. 1C718746 L 23 23PY. 9 GPH | Mercury Verado 350 SCi : 33. Active Trim makes boating easier and more enjoyable by automatically trimming your outboard. Jet Drive. 40 - 50 HP Outboards. The MFS40 also has a high output 21A alternator for superior battery charging. Showing Outboard 1 to 2 of 2. Page 38 5. Mercury Racing R-Series outboard motors employ exclusive advanced design elements and Mercury Racing technology to go quicker, faster and further. 2oz. 65. 9-60hp Command Thrust. 1C718683 L 23PY Suzuki Marine Mid size, 4-stroke outboard engines from 40 - 90hp. I have 1994 Mercury outboard that won't go in reverse. 40ELPTO. And a total commitment to corrosion protection utilizing hard-coat anodizing and a superior multi-step paint process. Select Mercury Outboard Motors Models Below. The sister engine to the 40 Hp was the first 6 cylinder 60 Hp outboard which was considered by many to be the most powerful outboard of it's time. Electronic fuel injection for reliable starts and increased efficiency. A robust electrical system with a high-output Carburetor Jet - For 30 Jet & 40 Hp Mercury Mariner Outboard Motor #1395-823621. Shop the best selection of MERCURY MARINE 4-Stroke Outboards from West Marine. 1C718164 L 22 Stand Sold Terh. 1C718174 L 22 23PY sold king. Motori. Enhanced fuel injection for boosted efficiency. 2025 Mercury FourStroke 40 There are three ways to check hours on a Mercury Outboard—engine diagnostics, a gauge on the boat's console, or an after-market engine hour meter. Fast forwarding 40 years marked another milestone for Mercury Marine when they introduced the first 3. 60 Hp 40-50 Hp a - Special Bolt (10-90041) Torque to 20 lb. Jul 9, 2009. (13. Charlottetown, Prince Edward Island. 9hp outboards, now with easy-starting EFI performance. 65 GPH | Mercury 75 efi : 7. 4L V6. Verado 600hp. MFS40AJET. Mercury Adds EFI Engines to Portable Outboard Lineup ; 40-60hp FourStroke Maintenance; Sign up for the Mercury Dockline Newsletter for news, promotions and Mar 11, 2019 · QFS OEM Marine/Outboard Fuel Pump Replacement for Mercury 4-Stroke 20HP 25HP 30HP 40HP 50HP 60HP Outboard Includes Filter/Strainer and Grommet, 2002-2012, OEM 892267A51 dummy QFS OEM In-Tank Fuel Pump Replacement for Mercury Outboard 135 hp 6 cyl Optimax 75-300 HP Quicksilver Optimax, All Years, OEM 881705T1 GSC295 880596T55 Shop for Evinrude outboard motors for sale at Boats. For commercial fishing vessels, commercial workboats and law-enforcement boats. Adjusting both of these requires that you have the motor running. Mercury® Jet Outboards are designed with the power and the weight to cover any shallow-water jet boat application. Canada's source for Mercury 40 hp Outboard Motors buy & sell. engines Replaces: Arco 5392 Mercury Marine 50-893892T 50-660151 50-660153 50-66015T Mallory 9-15027. <br /><br />When you push the key in to You have places to go, and the Mercury 40 to 60hp fourstroke family of outboards is the easiest way to get there. 00 The sister engine to the 40 Hp was the first 6 cylinder 60 Hp outboard which was considered by many to be the most powerful outboard of it's time. Add to Cart. $4,800. 99. 00. V10 5. Jun 15, 2007 · 2. With the strength of the outboard segment's first V10 naturally aspirated powerhead, they deliver extraordinary power and capabilities so you can confidently explore beyond the horizon. For instance, 2. Replace plastic cap after installation. EVINRUDE 40hp outboard motor E40DSLAG 2014. 350 HP Outboards. Mercury Boat Inboard Engines and Components. However, it still develops plenty of torque. GASKET SET, Engine Overhaul (1 required per assembly) 27-822420A94 - Engine Overhaul Gasket Set [ More info ] $71. The adjustable steering friction and 1995 Mercury 40 HP. This 40 horsepower Mercury outboard, manufactured in 1995, is a saltwater model. 4,147. Smooth performance. We believe manual logging has a lot of value, but today is best coupled with electronic methods. Jet (25-80hp) Jet 25-40hp. Mercury 40 HP. Quick and compact. 80. Model. 75 - 90 - 100 HP Outboards. from Find the right parts to fit your Mercury® or MerCruiser® engine with the online Mercury Parts Catalog. We had a hard time getting the boat into reverse or forward, We took off the lower assembly and cleaned it up and put it back together we took the shifter and throttle control arms off and put them back on while in N, Now when we put the boat in forward it goes reverse 2019 Mercury 40 HP 40ELGA Outboard Motor General Information Manufacturer: Mercury Marine Model: 40ELGA FourStroke Model Code: 1F40313LZ. Jet 25-40hp. NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. $ 3,608. From a price perspective, a 40HP outboard makes the most sense. 2019 Mercury 40 HP 40EPT Outboard Motor. Verado® - Mercury® 5. However, here is what you need to know about oil capacities for different Mercury engines and much more. This engine uses the power of our 60hp four stroke EFI and is also backed by a 5 year limited warranty. And with outboards ranging from 2. 5 – 30 HP; MID SIZE 40 – 90 Four Stroke 40-60 HP. A Mercury SmartCraft System instrument package can be purchased for this outboard. It simplifies boat operation while improving engine performance and decreasing fuel costs. Mercury 40- 60hp outboards offer innovative technology such as SmartCraft, the most intuitive tiller, and troll control, combined with proven reliability and powerful performance for a great boating experience. Launch Parts Catalog. While you will need 35 oz of oil for an 8 Fourstroke model, Verado models need 211 oz or 246 oz, depending on the model. Jun 4, 2023 · The world of outboard engines is vast and filled with numerous brands and models, but one that notably stands out is the Mercury 40 HP 2-stroke engine. With step-by-step procedures combined with detailed photography and extensive use of Select Mercury Outboard Motors Models Below. Only 214 pounds; Available in a 20 SeaPro 40-60hp. 60. FourStroke 25-30hp. 1 - 12 of 22 results in Outboard. 1C718721 L 23PY. $ 3,115. $275 Dealer Engine Prep - Our factory qualified Find your 4 Stroke Outboard Mercury motors and engines at Boat Trader today. A leading name in marine engines, Mercury is recognized for producing top-quality outboard motors as well as the MerCruiser line of inboard engines. 00 $ 2,959. 257 pounds (including jet pump assembly) Active Trim makes boating easier and more enjoyable by automatically trimming your outboard. Lightweight Heavyweights. Application: 40 HP Add to Cart Using the powerhead from a Yamaha F40F outboard, the Mercury EFI 40 four-stroke outboard motor is lighter than some DFI two-stroke engines in its power range. Some boaters rely on the old-school method of pen and paper logging. Or Efficient. 5 to 50hp, there are solutions for powering a wide range of boats and applications. Dial in your desired performance with a broad range of horsepower rating and gearcase options that are simply unmatched in the industry. 60 HP Outboards. We are committed to providing the best in customer service. The Mercury 4 HP outboard features full forward-neutral-reverse gears, twist grip throttle, quiet thru-hub exhaust and digital CDI ignition. With Tohatsu’s 40hp Jet Drive four stroke EFI you can reach waters that are difficult to reach with a propeller-driven outboard. FourStroke 9. 40-60hp FourStroke Maintenance; Mercury Outboards: Find Your Serial Number . Free shipping. Basic maintenance Mercury 3-275 HP Outboard Service and Repair Manual, (1990-1993) B722This Clymer manual covers more than 25 Mercury outboard motors ranging from 3 HP to -275 HP. Sierra 18-5610 Outboard Starter Replaces 50-893892T. 980 km from Ottawa, ON. These growling naturally aspirated (no supercharger or turbo) behemoths feature a 5. FourStroke 80hp Jet. This engine has power steering and a electric-type Mercury EFI outboards deliver reliable turnkey starts, improved fuel efficiency, and instant throttle response. Typically, you can expect to pay about $100 more per horsepower between the midrange outboards. or Best Offer. Mercury EFI outboards deliver reliable turnkey starts, improved fuel efficiency, and instant throttle response. 9hp ProKicker™ for dialing in precise trolling speeds, and 8 and 9. Jun 9, 2021 · How to change your oil in the 40/50/60 hp Mercury outboards. 35 amp / 441 watt with water-cooled voltage regulator. 65. Find a dealer. . 9. Turn your boat left and right and note the direction the boat turns more easily. Mercury has invested countless hours into engineering the 175 to 225hp family of FourStroke outboards, so you don’t have to give it a second thought. We have a wide selection of boats and vessels. Mercury Marine has unleashed supercar performance on the water with all-new ten-cylinder 350- and 400-horse V10 Verado outboards. Sort By: [Page 1 of 1] Mercury 40 hp Outboard Motors for Sale by owner and dealer. Active Trim is compatible with all current SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above; 2022 and newer, 25hp and above). 2019 Mercury 40 HP 40ELGABT Outboard Motor. 5 - 30 HP Mercury FourStroke ® 40 - 150 HP Mercury FourStroke ® 200 - 300 HP Mercury FourStroke ® 250 - 600 HP Mercury Verado ® 15 - 500 HP Mercury SeaPro ® 115 - 300 HP Mercury Pro XS ® Avator Electric Outboards 10+ In Stock. $3020. New (Other) $111. 9 out of 5 stars 27 Jun 14, 2004 · Re: 40hp Electric Choke: How does it work? Mark. This creates a light, compact, powerful outboard and improves throttle response for shallows and shoals. 5 and 3. Performance fluide. REQUIRED FEE $275 Dealer Engine Prep - Our factory qualified technicians perform a full test run of your new outboard by unpackaging it and connecting it to rigging, fuel, battery, and diagnostic computer. This outboard is equipped with proven technology, including electronic fuel injection (EFI) and digital CD ignition, which provides quick throttle response, excellent fuel economy, and very smooth rides on the water. Features: Power: 40 HP; Engine type: Inline 3; Displacement: 747cc; Full throttle RPM: 5500-6000 Lightweight Heavyweights. Remove the four bolts that hold the water pump assembly in place, followed by the water pump housing. Outboards. Season after season, these durable, easy-to-maintain SeaPro commercial motors deliver reliable starts and improved fuel efficiency. This is a 4 cylinder model. 2. 9hp FourStroke outboards for exploring in small boats. 2019 Mercury 40 HP 40MLHGA Outboard Motor. Mercury 4-stroke Outboard Motor Fuel Consumption Chart | Mercury 25 efi : 2. Remove the impeller and its two nylon washers (the one above it and the one below it). Step by step and the tools necessary as well as the kit of supplies needed. - Mercury Marine today announced a new and innovative product that enhances the experience of controlling a boat using the tiller handle. Visit for products, prices, deals and more! Active Trim. Efficient and easy to own. That ability adds to long-term durability and reliability. Enhanced fuel injection (EFI models) for boosted efficiency. 2019 Mercury 40 HP 40ELHPT Outboard Motor. . However, like any mechanical piece of equipment, there might be problems … Mercury 40 HP 2 Stroke Problems The most popular outboard on the water. The displacement for the pistons is 43. Description. A helpful video for maintaining your 40-60 FourStroke Engine. Step 3. 00 3,939. FourStroke technology and Mercury. FourStroke 40-60hp. Fuoribordo. Outboard. With its single throttle valve, long-track intake manifold and electronic control module, it delivers easy starts, fast acceleration and excellent top-end speed. Its compact, lightweight SOHC four-cylinder, in-line design features a single throttle valve and long-track induction system. Iniezione elettronica del carburante per avviamenti affidabili e maggiore efficienza. REQUIRED FEE. Click to order. 56 inches and the stroke is 2. 40 4-Stroke outboard motor pdf manual download. Always moving forward. Mercury 40hp 4stroke, electric start, advanced tiller steer arm, long shaft, power trim EFI, 4-Stroke Propshaft HP: 40 hp 3-Cylinder Shaft Length 20" (Long shaft) Tiller Steering Electric Start Weight 220 Lbs Sale price $7,199. Locate the serial number label on the transom bracket of your outboard. View and Download Mercury 40 4-Stroke manual online. A compact, single-overhead-cam design and long piston stroke deliver more low-end torque for stout power, even when pushing a heavy load. The Mercury Jet stainless impeller improves performance and withstands harsh, abrasive debris that can be drawn through the pump, such as sand and shells. 13 inches. 5 Installing Outboard 40-50 HP mm) drill bit. Please contact with any questions and/or for a 15hp Manual Start 4-Stroke Outboard, 20" Shaft Length. Take command of the water with innovative Feb 18, 2010 · WINGOGO 18-3214 Water Pump Impeller Repair Kit for Mercury Mariner Force Outboard 40 45 50 60 75 80 90 100 115 120 HP & Honda 19021-ZW1-003 06192-ZW1-305 BF75 BF90 (1996-1998) 46-43026Q06 8M0100526 3. I think I revved the motor a little before it fully engaged in reverse. #. 4L V6 powerhead delivers unmatched performance and reliability, while a vibration-dampening design ensures a quiet, comfortable boating experience. Jun 15, 2007. To make light work of long journeys. A job on the water can be unpredictable, but a SeaPro outboard clocks in on time every day, eager to work as hard as you do, for as long as you do. Brand new, 2024 Mercury Jet 40 ELHPT. Finally, replace the fuel filter. With boater-driven innovations and technologies. The problem started when I shifted in reverse when slowly moving forward (trying to stop to avoid a rock). 5 - 30 HP Mercury FourStroke ® 40 - 150 HP Mercury FourStroke ® 200 - 300 HP Mercury FourStroke ® 250 - 600 HP Mercury Verado ® 15 - 500 HP Mercury SeaPro ® 115 - 300 HP Mercury Pro XS ® Avator Electric Outboards They have everything you need, and nothing you don’t. From long runs across the marsh before daylight to endless days spent chasing the next bite, these shallow-water specialists get you to places other boaters can’t or aren’t willing to go. Compare outboard motor models and specs. 25. Application: Mercury 30 HP 3 Cyl. Browse our showroom and take a closer look at all our marine and powersports inventory. Don’t limit your hunting and fishing locations. There are plenty of good reasons these outboards rule the water. 0 GPH | Mercury 115 efi : 10. Start with no-worry reliability. Available to Order: Usually ships within 10 days. Opens in a new window or tab. A 3. Starting reliability with gutsy performance. Mercury Outboard NGK Spark Plug Guide. Founded in 1939 by the talented engineer-businessman Carl Kiekhaefer, the Mercury brand of boating engines are found as factory equipment with many FourStroke 2. It’s worry-free boating that’s easy to own and fun to drive. eo wt ry mb hr xv wb tm po ht