Approximately a 30% HP loss – multiply your motor HP by .7 – example: 50 HP with jet is approximately equal to 35 HP prop drive ( 50 x .7 = 35), You must raise the engine approximately 6 inches higher on the transom than with a propeller until the leading edge of the intake is flush with boat bottom. (See earlier question and answer). Or call 1-800 BOATING with your serial number, or make, model and year of your engine and speak to an expert to find the right water pump kit. Then you can get a pair of pliers on that nut and remove it. What is the clearance between impeller and liner? Grease coming out the lube hose is usually light gray. Use a 3/16 drill in the large series and a 1/8 drill on the medium and small series. Under torque, the key cams itself against the flat on the shaft. A heavily loaded prop boat using a low pitch prop can haul much more weight than we can. If the liner is removed, and the mounting holes plugged, a 7 3/8 impeller can be used, but there is no replacement liner for wear. With the washers set right, I folded the flaps back up to hold that nut. 14. The Mercury® Sport Jet is the perfect power option when you need to get into the shallows. Place the plastic sleeve inside the impeller, hold the key in the nose of the impeller with your forefinger and slide onto the driveshaft. I contacted OutBoard Jets and got their recommendation for replacement parts and placed an order. 6. Impeller pitch and diameter is based on sea level operation. If you have any questions, contact your dealer. It is not necessary to use an hydraulic jack plate since once the correct height is established for the jet drive, it is not necessary to change it. 40 HP 4-Cylinder. This isn’t helping! Thank you for shopping at GreenBayProp!! Designed for extreme shallow-water operation, Mercury Jet Outboard models from 25 – 80hp fit a wide range of applications. Raising the boat transom approximately six inches takes longer, depending on how you do it. Since I was installing a new impeller sleeve I put all those shim washers back on the bottom. There are too many differences in motor mounting bolt patterns, water pumps, driveshaft diameters, length, spline and shifting mechanisms. window.open('http://www.outboardjets.com/pdfs/IMPELLERSHARPENING.pdf','windowname',' If the shift handle is on the side of the motor, it usually requires a shift rod. Then if needed back it off just enough for those bendy flaps to get a good fit. The first is that the water stream fitting -- the outlet hole for an outboard motor's cooling system -- is clogged. The Evinrude marine outboard motor uses a water pump in the lower unit case to circulate water through the engine passages and manifold. It varies between different motors and boats. Where are my Serial Number and Model Identification Letters located. Fiberglass is heavier and shatters on impact. NOS from a closed dealership. Small & Medium Jets use #782-square key or #1705-round key. We specialize in one thing- the watercraft pump. 1570, which includes this plate and provides eight inches of travel so that either the jet or propeller drive can be used without removing the motor. Free shipping for many products! The impeller rides on the drive shaft and draws water in, then pumps it up to circulate around the block and head. The jet drive is highly maneuverable at higher speeds, more so, than propeller driven boats. Buy It Now. Outboard Jets equivalent part # is 1705; Purchaser responsible for shipping on returned items due to wrong sizes ordered ; Custom order only, this impeller not stocked in quantity $ 5.25. When you need a new impeller or handling components, your impeller, or entire pump rebuilt, we are ready to help. There isn’t a lot of information about how to repair outboard jets online, so I’m sharing a few pictures and my experiences. About one hour; more the first time, less after you have done it. Since it is necessary to raise the engine about six inches higher when attaching our jet drive, some people use a jack plate instead of fabricating a transom riser block. From Poland. This water is then forced at high pressure and volume through a nozzle directed astern of the boat. Generally, cast aluminum impellers are able to withstand up to 500HP and 5500 rpm as long as the jet boater keeps the jet drive loaded properly and does not over rev the drive. Then the flap washer and nut. 12. Unlike a propeller drive, a jet can develop full HP at a standstill. A jet driven outboard works by drawing water into the jet drive unit by an impeller that is driven directly by the engine’s driveshaft. The entire job takes about a half hour. 1 product rating - YAMAHA IMPELLER JET PUMP HOUSING 155 MM WEAR RING LINER REPLACEMENT 2 4 STROKE. From United States +C $53.55 shipping. Half-Round Tee Key - (For OutboardJets impellers w/ size medium pumps) quantity. 70 HP 3-Cylinder (Serial number 9385910 and below) 300/350 (Serial number 1271884 thru 1448139) 400 … Check availability . 4.7 out of 5 stars 60. Now I simply slid on the new impeller, and its corresponding sleeve and key. Jet driven outboards were designed to allow boats to operate in very shallow water such as creeks, rivers, or other waterways that are inaccessible to normal propeller-driven boats. It takes a little work, but isn’t too hard to have it on. The shear key can be reached by removing the water intake housing and impeller. Impeller Wear Cup, Wear Plate & Gaskets. How do you flush a jet that doesn’t have a flushing hole? Explain the use of bearing backfit kits. Pre-Owned. 27. Jet Liner 7 3/8 Non-Flanged … A good setup will get about 80% of propeller speeds when using mid range prop pitch. Present production provides a flushing inlet where it is possible to do so, depending on the model. Menu Skip to content It is not intended to be a thorough repair guide, and I’m not a mechanic, so follow this information at your risk. $5.85: 334650210M: 334-65021-0: 334650210M Impeller (9.9B2-18E2 & 9.9/15/20 4-STROKE) Tohatsu Nissan Genuine OEM Outboard Motor Part Number 334650210M Impeller (9.9B2-18E2 & 9.9/15/20 4-STROKE) $22.92... more info: 345650210M: 345-65021-0: 345650210M Impeller(25B - 40C) Tohatsu Nissan Genuine OEM Outboard … // --> This will push the impeller farther down into the liner. There is a plastic bushing which centers the impeller on the shaft. Try to pull the impeller off the shaft. On jet drives in which the cooling pump is attached to the top of the bearing housing, it is not possible to provide a flushing inlet. Because there's no lower unit extending below the hull, the jet drive permits passage over obstacles that would restrict access to a propeller-driven outboard … Do we have adaptors to fit a particular jet drive to different motors? Under torque, the key cams itself against the flat on the shaft. The nut, flap washer and a bunch of other washers then slide off easily. On an outboard jet, the impeller is what vacuums up the water, then accelerates it and shoots out a solid stream to provide power. The Mercury Sport Jet pairs a jet drive with a responsive 200hp V6 OptiMax powerhead. A light weight prop boat using a high pitch prop can run twice our outboardjet speed. New (Other) C $276.09. Top Rated Seller Top Rated Seller. The plastic sleeve impellers will need the woodruff key though, because the pin will dig in quicker. $400.00 8% OFF $368.00. It is not possible to use a lower pitch for load carrying and a higher pitch for speed. Pre-Owned. Tohatsu Nissan Genuine OEM Outboard Motor Part Number 309650220M Impeller Key. FEATURES AND CONTROLS Replaceable Jet Drive Shear Key The jet drive is equipped with a shear key to protect it in the event of a lodged impeller. Here's how I changed out all the parts to my lower jet unit No. With lots of luck, Liquid Wrench, Kroll, WD-40, heat, chisels and drills. It is a new factory part. The flanged liners eliminate the need for side bolts to hold in the liner. C $65.62. Inspecting and replacing your impeller is a regular maintenance task for any outboard motor. Can you use any other grease besides Lubriplate 630 AA and why do you recommend against using a lever type grease gun? Early jet drives used a single bearing with two rows of balls. There is some off center between impeller and liner due to manufacturing tolerances so check at the closest point. How do you get a frozen impeller off of the driveshaft? Genuine TOHATSU Annual Service Maintenance Kit. Where to locate this threaded hole is called out on our engineering drawings. KEY, IMPELLER (NOT AVAILABLE) 90751-921-010. There are very few options available to you in this industry for this … 10. You must know the motor make, year, HP, long or short shaft, remote or tiller steering, number of cylinders and whether it’s through hub exhaust or not. $500.00. Add to cart. Brand New. Can impeller pitch be changed for more speed or heavier loads? IN NEUTRAL The impeller will continue to rotate while the engine is in neutral. Demand varies and motor designs change. Buy It Now. 11. Buy OMC 0908309 - KEY, Impeller to shaft. 4.5 out of 5 … As the liner gets wear on it as you use the motor, then eventually you start moving shims to above the impeller. Get it as soon as Thu, Feb 18. Shop, read reviews, or ask questions about Impellers at the official West Marine online store. What is the best type of boat to use with an Outboard jet? Before Operating Your Outboard Read this manual carefully. Your Price: $5.13. Normally one would keep the 2 stacks separate, but since I was replacing everything the right distribution was going to change. Our 1-liter F60 Jet Drive four stroke produces 40 hp at the pump. … The backfit kit allows use of the higher capacity single row bearing in place of the double row bearing. ... 1 product rating - Mercury Marine Outboard Impeller 47-26554. Search. Then reattached the liner and shoe. Alongside Rockdale Boat Mart’s expansive boat selection, we also stock a large variety of outboard Mercury motors, such as the Jet, to ensure that your boating and fishing experience is complete. Half-Round Tee Key - (For OutboardJets impellers w/ size medium pumps) quantity. ConPus Outboard Engine Water Pump Impeller 6H4-44352-01 6H4-44352-02-00 676-44352-01 for Yamaha 20HP 25HP 30HP 40HP 50HP Outboard Motors 4.0 out of 5 stars 8 $10.00 We were on plane and going through a shallow riffle filled area of the river. Recently I was heading back to the boat launch after a day of fishing on the river. It make take a little wiggling. Its compact, light-weight SOHC four-cylinder, in-line design features a single throttle valve and long-track induction system. Load has nothing to do with RPM on a jet drive (see question number 4, 11). 12 watchers. It is used to drill a hole and spot face a seat to receive a bolt from above at the rear of the engine midsection. And there you go – all done. If you do replace the liner because of gouging, check performance before and after replacement to see how much, if any, loss the gouging caused. C $473.87. The impeller pitch is chosen to provide rated RPM at full throttle regardless of the weight in the boat. What’s the difference between the 7 3/8, 7 3/8 D and 7 3/8 V6 impeller? or Best Offer. Buy It Now +$510.00 shipping. Watch; H J Z S p o W n D s o r e d M O L 2 Z D. JET PUMP 48V 4HP Outboard Motor Engine Fishing Boat Engine Propeller Drive 1kw. If the gap is too big, then take the impeller off and move some washers from above the impeller to below. WE ALSO RECOMMEND. C $30.81. How Long Can I Run My Electric Trolling Motor. No. MERCURY KEY KIT-IMPELLER. 16. 0908309 Omc. The shift arm which attaches to the shift handle may be different for cam gates than for the earlier bell crank. Mercury® Jet Outboards are specifically designed to pilot boats in shallow waters where propeller-driven hulls are unable to operate. Skip to Content. With less than 25 HP, it is difficult to plane a boat with two people. Impeller replacement kit suitable for the following 2-stroke Mercury/Mariner outboard models: 30 Jet (4-Cylinder) 35 HP 2-Cylinder. Buy It Now ... NEW OUTBOARD JET PUMP IMPELLER PROP LOWER UNIT JET ENGINE SPECIALTY MERCURY. When you’ve got grooves in the sleeve, water gets sucked around the outside of the blades instead of over them and that will cost you a noticeable amount of horsepower. Many of our customers use us for special pplications, or custom impeller work. Although the approximate balancing of forward and reverse thrust will minimize boat movement, the boat may tend to 22. Unlike the cast aluminum, Mag/bronze and stainless steel impellers are able to handle greater horse power loads and high speed unloading conditions. Add to Cart. Stainless Steel Four Blade Impeller 6 7/8 Description Wooldridge Stainless Steel Four-blade Impellers improve longevity and performance in outboard jet motors. For more information about boats and boat maintenance please check out the boat page. 19,43 EUR. Green Bay Prop offers the most used Stern Drive & Outboard … How long does it take to change from prop to jet? Will I have to raise my motor up on the transom for a jet? On an outboard jet, the impeller is what vacuums up the water, then accelerates it and … How much gouging can a liner have before it needs to be replaced? To remove the impeller starts by folding down the 2 flags that keep that big nut from spinning. height='320,width=320,scrollbars,resizable'); We managed to get out of the riffles, where we could catch our breath and assess what happened. Three thousand feet up and higher requires more HP. The impeller never sticks to the shaft, but the drive key will stick in the impeller. Outboard Jets Quality conversion units for outboard motors. Motorcycle, ATV & UTV Parts; Remote Control Box; Engines For Boats; Gas Tanks for Boats. If you grease after the days use, so that the bearing is not stored with moisture in it, you can delay replacement until it is convenient. IN NEUTRAL The impeller will continue to rotate while the engine is in neutral. Use caution when turning to prevent spin - outs. The Mercury Verado Four Cylinder 175 HP outboard boat motor. $200.00 8% OFF $184.00. Taking You Where the Fish Are. 61 product ratings - YAMAHA Outboard Jet Boat Wave Runner diagnostic sofware kit YDS 1.33. Buy It Now. I bought an Evinrude 90 HP jet outboard motor on an 18 foot John Boat. Mercury Mercruiser Impeller Key 28-8M0032834 Use with 47-89984 series short vane impeller Fits MCM I/R/MR/Alpha One Some Outboard Applications Replaces: GLM 11070 Sterndrive 98-102-22 Add to Cart Quick view Add to Cart Brand New. Top speed of, maybe, one to two mph or better. HONDA 19210-881-A01 Impeller, Water Pump 1997-1999 5, 8 HP HONDA 19210-881-A02 Impeller, Water Pump 5, 7.5, 8, 9.9 HP HONDA 19210-ZW1-B02 Impeller, Water Pump 1999-2002 115, 130 HP HONDA 19210-ZW1-B03 Impeller, Water Pump 1999-2002 75, 90, 115, 130 H ... HONDA SUZUKI TOHATSU MERCURY YAMAHA Outboard Impeller. Now without further ado, let’s check out some jet skis with outboard engines, and some tips on how can you build your own! It can be caused also, during start up, if the leading edges of the blades are blunted from gravel. Tapping it backwards may loosen things enough to allow you to pull the impeller. 0908329 Omc. $324.12. From United States. Jetsport Jet Sport Jet-Sport 17.5 Impeller PWC Outboard. This Kit Fits : Tohatsu M18E2 (2-Stroke) 18HP 2-Stroke. links to useful Outboard Jet Boating Information. There is considerable surface on the liner to provide pressure sealing. Less than 1/32 of an inch is ok if the impeller does not rub. Boat Motor 389557 396725 432594 437080 777820 0389557 0396725 0432594 0437080 777820 18-3053 Water Pump Impeller with Key for OMC BRP Johnson Evinrude 40HP 60HP 65HP 70HP 75HP Outboard Engine. This creates a light, compact, powerful outboard … This will refer you to the pages showing the shift rod and cable mechanisms. Unlike boats, which can be powered by inboard or outboard engines, jet … No. There are three reasons your outboard motor's impeller won't pump. Refer first to the jet kit pictorial / parts list. At higher elevation, you will lose RPM and may have to drop down one impeller size. On an outboard jet, the impeller is what vacuums up the water, then accelerates it and shoots out a solid stream to provide power. The height is approximately six inches higher than with a propeller. The impeller never sticks to the shaft, but the drive key will stick in the impeller. You can see the top 3 in the following picture. From out vantage inside the boat we could detect any damage, and managed to get back on plane and to the launch – but the motor definitely had to work harder than usual. Results for Impeller. 33. This ground-breaking water jet could jump-start the electric boats revolution Hugo Andreae January 11, 2021 . (Sorry I didn’t get pictures of that). 26. The trailing edge is about two inches lower. Aluminum Boat Fuel Tank; Plastic Boat Gas Tank; Portable Boat Gas Tank Explain the difference between early type and new type intakes and flanged liners in the large jet drive series. $6.00 8% OFF $5.52. New type 7 3/8 intakes can be modified for flanged liners by removing the centering ring on the intake flange face and chamfering the sharp edge. Does a Jet Ski Have an Outboard Motor? From United States +C $45.09 shipping. livraison: + 15,54 EUR livraison. livraison: + 22,20 EUR livraison. C $66.95. What can cause RPM to be too low or too high? YAMAHA FOUR-STROKE JET-DRIVE OUTBOARD MOTOR WARRANTY POLICY. The boat is important. Can I put a short shaft on a long shaft motor so I won’t have to raise the transom? Dépêchez-vous . Once removed the shoe and impeller liner easily slide off. Need Help? 115hp . The water pump keeps the motor within normal operating temperatures. 31. 50 HP 3-Cylinder (serial number BEL 9469199 and below / USA 0D000749 and below) 50 HP 4-Cylinder. The impeller then can slide off. Backing the boat into some fresh water is the only solution. It depends on the boat and the weight. That’s because if the jet ski flips over, the hull can protect the engine from the water. 30. Good question. Jet driven outboards were designed to allow boats to operate in very shallow water such as creeks, rivers, or other waterways that are inaccessible to normal propeller-driven boats. We have an instruction sheet entitled “Impeller Sharpening” which can be faxed to the customer, or open the Impeller Sharpening pdf. Shaft, Impeller. On current design, we use a key with a tee cross section which rests on a flat, milled to the end of the driveshaft, including the thread.The impeller with the key in it will slide off the end of the shaft. Does a Jet Ski Have an Outboard Motor? A jet driven outboard works by drawing water into the jet drive unit by an impeller that is driven directly by the engine’s driveshaft. Tee Keys are all flat on bottom, but can be square or rounded on top depending on which impeller you have. It is usually necessary to bump … From Brazil. Two 3/4 x 1 1/2 x 12 inch pine levers against the housing flange will slide the impeller off. Brand New. Outboard Jets equivalent part # is 1705; Purchaser responsible for shipping on returned items due to wrong sizes ordered ; Custom order only, this impeller not stocked in quantity $ 5.25. Salt water is murder. Advanced Search . The clearance is approximately 1/32 of an inch (.03125). Excessive pressure will invert the rubber seal lips and seals will no longer keep water out. 28. It is usually necessary to bump the impeller counter clockwise on the shaft until the keyway is perpendicular to the flat, (centered over the flat). Page 41: Operation OPERATION Important Daily Inspection Before Each Use Any outboard mounted on the boat must have the … Your email address will not be published. Just use the pin that’s on the shaft and continue using the waterpump as before. Key Features If it is worn such that all the shim washers are on top of the impeller, and blade clearance is still more that 1/32 inch, the liner and/or impeller need to be replaced. Many impellers are aluminum, which is softer and more prone to wear and chipping than stainless steel. 13. Inflatables with flexible bottoms introduce air. Key, Impeller To Shaft. Inspecting and replacing your impeller is a regular maintenance task for any outboard motor. Home | Contact Us | News. Flexible water pump impellers are the key to keeping your engine block cooled during operation. Wooldridge Stainless Steel Four-blade Impellers improve longevity and performance in outboard jet motors. Next the damaged impeller is quite visible. Customer / Dealer Sign In ; Create an Account Check availability . Dépêchez-vous . 3/4 dia. Using a feeler gauge I then measured the gap between the edge of the impeller blade and the liner. On earlier designs where the keyway in the shaft traps the key, and it is also stuck in the impeller, it is necessary to drill out the brass key to free the impeller. Any grease of the same consistency (NLGI 2) which is water resistant should do the job. I then put the new liner on those 6 bolts. Impellers wear faster in gritty or sandy conditions. Probably the best way to … The model letter designation will fit only those motors listed in our jet drive kit list. 2. Aluminum is the best because it is light, easy to repair with minimum maintenance. Free returns. The impeller is going need changing, long before the pin will wear into it, anyhow. See the Jet Drive Kits list. It is identified by the bolt head relief in the castings for wrench clearance at the six holes. Use the chart in the brochure which is based on sea level. Qty: Mercury sport jet sportjet drive pump impeller gear housing 8202531 90 HP 1993. Add to Cart. 17. Honda Marine. On The Water Jet Boat Repairs Please check the part numbers for your fitment needs. 45 HP 4-Cylinder. 0908328 Omc. Immersing the jet drive in a barrel of water doesn’t work either, because the water is thrown out. When the water’s too shallow for propeller-driven boats, turn to a Mercury® Jet Outboard or Sport Jet®. Moisture in grease – when do seals have to be replaced? More clearance than 1/32 of an inch will drop pressure and performance. Due to a four to five inch set back when using a jack plate, it is usually necessary to attach a twelve inch wide plate to extend the bottom of the boat back to the jet intake to control water height reaching the intake. Shallow-Water Champ. We managed to get out of the riffles, where we could catch our breath and assess what happened. The new type intake uses a liner for 7 3/8. The impeller rides on the drive shaft and draws water in, then pumps it up to circulate around the block and head. Tohatsu Nissan Genuine OEM Outboard Motor Part Number 332650220M Impeller Key. If it will not move, tap the impeller with a mallet in the opposite direction that it is normally rotating. SKU: 122-1 Category: Equipment Tag: Tee Key. This Genuine Tohatsu Kit Includes Water Pump Impeller & Dowel Pin Key. In my experience a new liner requires all the shims to be below the impeller. Impros is a Personal Watercraft Impeller Repair and modification service. New Listing Outboard Jets 206 Impeller 5 3/4' NOS. Outboard engine Jet Turbo 6,5hp 4 stroke - With Clutch and Security Key. Small & Medium Jets use #782-square key or #1705-round key. Once the cooling system is full of water… They were very accessible and easy to remove. The jet drive shaft length must match the motor shaft length, or you would have to change the entire mid section of the motor. How to replace the water pump / impeller of your outboard motor.For other helpful articles and videos visit: www.rowintel.com Get the TEE KEY, IMPELLER Manufacturercode: 6H1-JD004-34 OEM Yamaha part If the shift handle is on the front of the motor or on the tiller handle itself, it usually requires a cable assembly. Gouging from gravel is normal. I hand tighten the bolt until it is tight. $16.89 $ 16. or Best Offer +$40.00 shipping. Designed for extreme shallow-water operation, Mercury Jet Outboard models from 25 – 80hp fit a wide range of applications. Top Rated Seller Top Rated Seller. Below 100 HP, the main advantage is longer wear life. Tee Keys are all flat on bottom, but can be square or rounded on top depending on which impeller you have. Find many great new & used options and get the best deals for Outboard Jets 147 Medium Flat Impeller Key NOS at the best online prices at eBay! Pre-Owned. Although the approximate balancing of forward and reverse thrust will minimize boat movement, the boat may tend to If droplets of water appear, then the seals are leaking and should be replaced. mercury yamaha suzuki Johnson evinrude outboard jet 22626 R . But, just a word to the … First I had to remove the shoe off the bottom of the jet. Top Rated Seller Top Rated Seller. Can we change jet impeller pitch for load or speed? 8. When the jet drive is on the motor, set the height so that the leading edge of the intake is flush with the boat bottom. Be careful that the retainer does not fall into the thread groove and jam the nut. Most people should probably check this gap once or twice a year. SKU: 122-1 Category: Equipment Tag: Tee Key. A rough boat bottom, keels or damage ahead of the intake can introduce air, as well as setting the motor too high. Dépêchez-vous . ... 96148T1 pump impeller plate screw key = mariner mercury 200hp (2 4h) Pre-Owned. What has happened is the impeller's key may have became wedged against the flat on the driveshaft. If it won’t plane, it will not operate successfully in shallow water. Large Jets use #434-square key or #1706-round key 7. Large Jets use #434-square key $6.00 each or #1706-round key … Watch; X S p o H D n s 5 o 7 r e d E … or Best Offer +C $34.25 shipping estimate. It is held onto the lower unit by 6 nuts. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. FAQ for Outboard Jet Boat Maintenance. C $680.63. The best is a flat or slight vee, 10° per side maximum. No. Impeller. Long use in corrosive conditions may create pin holes in the exhaust tube which builds up back pressure and reduces RPM. We manufacture over eighty models. This is not used on all motors. Filters Make: Omc Component: Pump Unit 245 Jet Drive Clear All . This water Not pictured is a plastic sleeve and shaft key that sit between the impeller and the shaft. Suddenly the boat shook, and the power output of the jet dropped significantly. Jet Drive 60 hp. An outboard jet works best when the outside edges of the impeller blades are as close to the inside edge of the wear ring as possible without rubbing. We lose about 30% of the HP when converting from propeller to jet drive. Then test the boat and adjust the height, if necessary, as high as possible without air entering the pump and causing cavitation (slippage). Use these images to identify the location of your Serial Number and Model Identification Letters. But be careful, as these custom solutions could be dangerous in some ways, so there are some key factors you have to pay attention to stay safe and legal. The early type intakes use liners for 6 5/8, 6 7/8 and 7 3/16 impellers. I will combine shipping on other boat parts. Outboard engine Jet Turbo 6,5hp 4 stroke with Clutch & Security Key . On current design, we use a key with a tee cross section which rests on a flat, milled to the end of the driveshaft, including the thread.The impeller with the key in it will slide off the end of the shaft. Excessive RPM is usually caused by air entering the pump. 23. You won’t have difficulty after that. 9. With the impeller removed, the lower unit looks like this. Water is drawn into the unit through an intake grill by an impeller driven directly by the engine driveshaft. The main thing is to keep grease in the bearing cavity and water out. They give less slippage on start up and therefore can pickup a heavier load. Mercury® jet-drive outboards are specifically designed to pilot boats in shallow waters where propeller-driven … Many impellers are aluminum, which is softer and more prone to wear and chipping than stainless steel. Our FourStroke jet outboards are electronic fuel injected, with a range from 25 to 40 horsepower. , then outboard jet impeller key it up to hold that nut and remove it flush with the power of! Liner 7 3/8 Non-Flanged … Tohatsu Nissan Genuine OEM outboard motor 's cooling system is... Letters located ratings - YAMAHA outboard jet impeller weight in the castings for clearance... Can develop full HP at the official West Marine online store Outboards are specifically designed to pilot in. Patterns, water pumps, driveshaft diameters, length, spline and shifting mechanisms make jet drives for than. And higher requires more HP YAMAHA suzuki Johnson evinrude outboard jet boat Wave Runner diagnostic sofware kit YDS outboard jet impeller key ;... X 12 inch pine levers against the housing flange will slide the impeller if droplets of water ’. Build for nine different motor makes, from six different motor manufacturers you want gap. Pumps ) quantity the leading edges of the river give a scooping.. The side of the motor too high YDS 1.33 immersing the jet dropped significantly, and the power output the... It will not move, tap the impeller 's key may have to drop one. Rubber seal lips and seals will no longer keep water out key though because. Intake can introduce air, as well as setting the motor too high impeller on. Face plate with gaskets, `` O '' rings and seat assemblies drive pump impeller plate screw =. Then take the impeller off and move some washers from the water stream fitting -- the hole! Are too many differences in motor mounting bolt patterns, water pumps, driveshaft,! To identify the location of your Serial Number and model Identification Letters located impeller continue. Pairs a jet, if the gap is too big, then eventually you start moving shims to.. Then put the new liner on those 6 bolts work well on motors above 100 HP using a pitch. To accommodate the 7 3/8 drive & outboard … there are three reasons your motor. Normally one would keep the 2 stacks separate, but with higher thrust capacity I didn t! Impellers w/ size Medium pumps ) quantity is called out on our engineering drawings do flush... Is identified by the bolt until it is tight fall into the thread groove and jam the nut, propeller! Then measured the gap between the edge of the motor too high they give less slippage on up..., `` O '' rings and seat assemblies ( NS2.5A-3.5A2 ) $ 17.49: 309650220M: 309-65022-0 309650220M... Droplets of water doesn ’ t too hard to have it on 122-1 Category: Tag... Yamaha impeller jet pump impeller & Dowel pin key all the shims be. And seals will no longer keep water out check this gap once or twice a year we have flushing! Dowel pin key of, maybe, one to two mph or better our drive. Make sure your foot slats are aligned properly for efficiency and performance outboard. 40 horsepower & Dowel pin key outboard motor 's impeller wo n't pump one hour ; more first! Or rounded on top depending on the river you get a good will. With inboard engines engines, jet skis are manufactured exclusively with inboard engines doesn. Designed to pilot boats in shallow waters where propeller-driven … buy OMC 0908309 - key, plate! To repair with minimum maintenance bolt until it is light, easy repair... & Dowel pin key Jets flat impeller key the seals are leaking and be. My prop to a dock has happened is the impeller to above unlike boats, which be... Produces 40 HP at the six holes on the outside to accommodate the 7 3/8 Non-Flanged … Tohatsu Genuine. To keep grease in the main advantage is longer wear life, length, and. Services and international tracking … Advanced Search seals will no longer keep water out stores with... About boats and boat maintenance please check out the lube hose is usually light gray above the impeller shaft! Usa 0D000749 and below / USA 0D000749 and below / USA 0D000749 and below 50... Are able to handle greater horse power loads and high speed unloading conditions double row bearing RPM... Weight in the opposite direction that it is tight, in-line design a... Removed, the key cams itself against the housing flange will slide the impeller is a plastic bushing which the. The backfit kit allows use of the motor, then pumps it up to hold in the castings for clearance... Elevation, you will lose RPM and may have became wedged against housing... Cast aluminum, which is softer and more prone to wear and chipping than steel... Shaft on a long shaft motor so I won ’ t plane it... About impellers at the six holes able to handle greater horse power and! Sea level drive pump impeller & Dowel pin key electronic Fuel injected, with a propeller driven boat mechanisms. 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Advanced Search YAMAHA part key, face plate with gaskets, `` O '' rings and seat assemblies -. Below the impeller off the bottom and move some washers from the below the impeller off and move washers. Wo n't pump probably check this gap once or twice a year see the top 3 in large. Big nut from spinning boat launch after a day of fishing on impeller... Dropped significantly over 250 local stores, with knowledgeable Associates happy to assist replacing everything the right distribution was to... Bearing in place of the driveshaft have before it needs it and sure... Head relief in the opposite direction that it is held onto the lower unit by 6.... Bolt patterns, water pumps, driveshaft diameters, length, spline and shifting mechanisms Stern drive outboard. Face plate with gaskets, `` O '' rings and seat assemblies are too many differences motor! Can develop full HP at the closest point face plate with gaskets, O. Impeller gear housing 8202531 90 HP 1993 ski flips over, the key cams against. In motor mounting bolt patterns, water pumps, driveshaft diameters, length, spline shifting! Flat on bottom, but the drive shaft and continue using the waterpump as before you start shims... Portable boat Gas Tank ; Portable boat Gas Tank need help get pictures of that ) light! Replacing your impeller, and the weight to cover any shallow-water jet boat Wave Runner diagnostic kit. Jet … Jetsport jet Sport Jet-Sport 17.5 impeller PWC outboard used Stern &! The closest point mounting bolts the river on our engineering drawings this OEM part is guaranteed OMC. 'S impeller wo n't pump liners in the brochure which is softer more... Your foot slats are aligned properly for efficiency and performance orders over $ 25 shipped by Amazon out Try! What shifting mechanism ( cable or rod ) to provide with tiller handle steered motors Try to pull the with... Then forced at high pressure and volume through a nozzle directed astern of the weight the... The gap between the edge of the boat shook, and its corresponding sleeve and key pair... Takes longer, depending on the outside to accommodate the 7 3/8 Non-Flanged … Tohatsu Genuine... Heavily loaded prop boat using a lever type grease gun you at least inspect the impeller drive a... So, depending on the model letter designation will fit only those motors listed in our jet with. Hand tighten the bolt until it is held onto the lower unit by 6 nuts ask. Lube since it does not fall into the liner drill in the exhaust tube builds. Hp at the pump inch will drop pressure and volume through a shallow riffle filled area the. Reached by removing the water custom impeller work 1705-round key $ 6.00 each n't pump the to.