Outboard jet impeller clearance

 

1. , Dominator 12s (10. Use a stout chisel to remove the metal key. Stainless steel impellers work well on motors above 100 HP. com Jan 23, 2022 · Shown here is a manual spec check of your impeller / wear ring clearance . Microsoft Word - AI. 99. Remove the water pump assembly including the lower stainless steel plate and impeller drive key. Less than 1/32 of an inch is ok if the impeller does not rub. 9% of all props an impellers are not balanced when they are new! If you are looking for a little bit better performance just get it balanced first With a outboard jet Every prop I have ever seen has been balanced. It is common to use shim washers above the impeller on new installs. The center mass of the impeller is almost solid and I have spun a beat up one When, after use in sand and gravel, the blade clearance becomes more than about 1/32 inch between the impeller edge and the water intake casing wall, one or more of the brass shim washers can be transferred from the bottom stack to the top of the impeller, which moves the impeller down into the tapered casing to reduce the clearance. 00 Mar 1, 2008 · Mar 10, 2008. The Boat’s Motor Easily Overheats. Gouging from gravel is normal. Sep 17, 2003. Sugar Sand Marine Mercury Sport Jet impeller fits the 175 & 200hp XR2 Sport Jet 1997-2000 sport boat. Re: 2002 90/60 outboard jet drive stuck impeller. Not sure about sportjet, but all outboard jets are 3 thou. 1984 115ETLN. 4. Does a stainless steel impeller improve performance of a jet drive? May 20, 2010 · Outboard jets are about 30 percent less efficient than their prop-driven cousins…and that’s when the stinking thing is brand spankin’ new. On top of the impeller there is a cap/cover over a nylon bushing followed by three washers. ) clearance between the impeller edge and liner. It make take a little wiggling. Observe the clearance between the impeller blade edge and the intake liner. Bottom should be at least 48 inches wide and boat length at least 14 feet long. Tighten the brass nut by the wrench. 125" diameter. Unlike a propeller drive, a jet can develop full HP at a standstill. Luckily, there are some things you can do to help make your outboard jet run like new again. Part number 122. 47-835452T. This is an impeller upgrade over stock and gives much Improved take off, better mid range acceleration and MORE SPEED then your 240/242 original 150-L-05021. What’s the difference between the 7 3/8, 7 3/8 D and 7 3/8 V6 impeller?-. The recommended way to tighten up the front clearance if needed is to use a shouldered wear ring, then shim the impeller back to obtain a clearance of Twin Tune Performance Yamaha Jet Boat impeller kit comes with 2 performance stagger custom pitched impellers & tool, polished and balanced for your 240 & 242 Jet boat pumps to get max performance. What is the ideal clearance between the impeller and liner?-. If your impeller is SS it is even closer. #1. Mercury Blue Binder 2023-2024. Name Size; Impeller T-Keys: 433. Fuse Replacement IMPORTANT: Always carry spare fuses. Extra ropes, tools rods etc. Call us! IMPELLER SELECTION CHART AT, TJ, SD-309, DOMINATOR, BERKELEY, ENERGIZER KIT Jet Drives (use the intersecting reference numbers as shown in the example below, impeller "cut"=hp=rpm. 250" diameter small bolt circle), American Turbine AT-309, and others have a register to locate the bowl to the suction that has a 9. Size: Tee Keys are all flat on bottom, but can be square or rounded on top depending on which impeller you have. Impeller Keys; Transom Bracket; Parts Kits; Outboard Jets Product Catalog. Produced using a lost wax precision casting method from high strength 17-4 stainless steel. 08-10-2006, 01:20 AM. Take the impeller off the shaft and sit it inside the housing on the ground so you can see, it should be a snugg fit and check that the Jets should only use Lubriplate 630-2 and 630-AA or Quicksilver 2-4-C Grease the Jet slowly until all water is purged A low pressure grease gun is advised Always be sure to cap the zirc before using the Jet Impeller Maintenance Sharpening and Shimming the Impeller regularly will improve performance Tighten the 5 bolts. 3 KB. We carry hard to find Outboard Jets parts including impellers and jet foot replacements. 035". Tee Keys are all flat on bottom, but can be square or rounded on top depending on which impeller you have. deadrise) and motor combo should max out at +/-5400rpm and 50+ mph. 8 mm (1/32 in. Shims should not be used above the impeller on new installations, where no wear has occurred, unless the blade clearance exceeds 1/32 inch. There is some off center between impeller and liner due to manufacturing tolerances so check at the closest point. Part number 8. I reinstalled the impeller at . Use a flat file to resharpen the leading edges. 00 each or #1705-round key $6. 005 or so all the way around. Small Series Medium Series Large Series Transom Bracket Impeller Keys Model Identification To remove the impeller starts by folding down the 2 flags that keep that big nut from spinning. The clearance is approximately 1/32 of an inch (. 4-Stroke. Then tighten the wear ring bolts a bit and crank the engine some more. When, after use in sand and gravel, the blade clearance becomes more than about 1/32” between the impeller edge and the water intake liner, one or more of the shim washers can be transferred from the bottom stack to the top of the impeller, which moves the impeller down into the tapered casing to reduce the clearance. There is considerable surface on the liner to provide pressure sealing. 032 clearance, put it in the water and seem to be hitting the rev limiter, or it has a bad miss that does not occur at low speed. Top speed of, maybe, one to two mph or better. Large Outboard Jet Impeller Shaft Nut 3/4-16 Br Large driveshaft impeller nut. 8 mm (0. Disconnect the gearshift rod coupling nut. Informed me that I should have dealer inspect When, after use in sand and gravel, the blade clearance becomes more than about 1/32” between the impeller edge and the water intake liner, one or more of the stainless shim washers can be transferred from the bottom stack to the top of the impeller, which moves the impeller down into the tapered casing to reduce the clearance. No idea on the WOT RPM's as my motor is a tiller handled one. Sep 12, 2005. May 10, 2024 · Remove the impeller by sliding it up and off of the shaft. Name. Dec 6, 2009 · 3062 posts · Joined 2000. Also we have been asked what is an acceptable clearance over and above the manual . Small & Medium Jets use #782-square key or #1705-round key. • Page 23: Engine Installation M25 Jet Drive ENGINE INSTALLATION Transom height of the boat Outboards with jet drives will be mounted approximately 7 inches higher on the transom than propeller Jet Drives / Pricing. 14. Yamaha Blue Binder 2023-2024. 22 ag 60 bf 50 g80 80 l60 55-75 p65 60-70 t65 55-65 y70 60-70 ac70 70-75 ad70 60-70 ap 60-70 g100 75-100 m100 85-100 m85-73 85 o85 70-90 aa115-4 115 ac90 80-90 ac-opt 75-90 ad90 90 agf 70 an-4m 75-115 an90 75-90 be90 75-90 br90-115 75 Jets should only use Lubriplate 630-2 and 630-AA or Quicksilver 2-4-C Grease the Jet slowly until all water is purged A low pressure grease gun is advised Always be sure to cap the zirc before using the Jet Impeller Maintenance Sharpening and Shimming the Impeller regularly will improve performance Welcome to Outboard Jets. Page 68: Timing Belt Inspection OUTBOARD JETS SHAFT SLEEVE PLASTIC LARGE 136 $ 3. This entry was posted on February 21, 2014 . Please someone help me. I would suppose there is a retainer in this assemly but I sure don't see it. Next, install the impeller. The outside diameter is the same, but the pitch is steeper going from 7 3/8 to 7 3/8 D to 7 3/8 V6 to handle higher HP. • Tilting the outboard out beyond a vertical position. Use one 3/8-16 x 1-1/2 bolt and lock washer, from above rear. Outboard Jets American Made Quality Conversion Kits For Outboard Motors Menu Skip to content Mar 31, 2013 · As long as you understand the outboard-jet, maintenance is minimal. Install the water pump assembly on top of the 1 1/2 inch thick aluminum adapter. Select options OUTBOARD JETS LARGE IMPELLER SHIM 121 $ 0. Add to cart Impeller Keys $ 7. Air entering the jet drive causes slippage, so the boat bottom needs to supply solid water, free of air, to the jet drive intake. When, after use in sand and gravel, the blade clearance becomes more than about 1/32 inch between the impeller edge and the water intake liner, one or more of the stainless shim washers can be transferred from the Get An Estimate Today 907-745-2383. I installed it once at . Tango Surgar Sand Marine V6 Sportjet 175hp, Surgar Sand Mirage 175hp. Jan 23, 2022 · Shown here is a manual spec check of your impeller / wear ring clearance . Place the plastic sleeve inside the impeller, hold the key in the nose of the The object is to ride on top of the water, which requires a good planing surface, and to float as shallow as possible when shut down. Maintenance & Ownership. Grease the shaft threads, key and impeller bore. doc. If cavitation still exists after lowering the outboard, it may be helpful to seek advice from the boat manufacturer. However, if your clearances are the cause of your pump slipping, that would mean you have too much front clearance, allowing the water to bypass the impeller. A Cut Impeller Stainless Steel. 102. Does a stainless steel impeller improve performance of a jet drive?-. (fuel and spark off) This will seat the wear ring (remove excess material) with the 25. 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. 5 liter engine. SS 3 Blade Impeller for large jet-when ordering please specify: 6 7/8″ part # 855708T60 7 3/8 part # 1756 7 3/8″ D part # 2124 7 3/16″ part # 2220. Can I swap Impellers for more load capacity or speed? 2C. This chart can be used to choose cam choices, help design your engine build , diagnose runability or lack of power problems, or to determine approximate When, after use in sand and gravel, the blade clearance becomes more than about 1/32” between the impeller edge and the water intake liner, one or more of the stainless shim washers can be transferred from the bottom stack to the top of the impeller, which moves the impeller down into the tapered casing to reduce the clearance. The first sign of a faulty impeller is when your boat overheats even in short periods of use. 5 deg. The nut, flap washer and a bunch of other washers then slide off easily. Be sure to install the impeller drive key, part #1275. Remove the 5 bolts and lower the gearbox. Use two 5/16-18 x 2-1/2 bolts (front), two 5/16-18 x 2-3/4 bolts (rear) from below with lock washers. Below 100 HP, the main advantage is longer wear life. Sharpen to a 0. Impeller Keys. 025" and . , move one shim washer from bottom to top of the impeller and check clearance again. Does anyone have experience with inspecting the impeller and wear ring on a 200 Optimax Sportjet jet pump? WOT is at 5800rpm and 37-38mph. 24 a40 40 a40-74 40 b35 35-40 e50 45-50 j50 45-50 u 40 z40 40-50 ab 40-60 af 40-50 ah 40-50 ai 45-50 aj 40-50 ak 30-40 Pro Performance Impeller will give a better take off and more speed the the stock impeller. Also we have been asked what is an acceptable clearance over and above the manual IMPELLER SHIMMING. This is a 6 1/8 aluminum outboard jet impeller from Outboard Jets. The electrical wiring circuits on the outboard are protected from overload by fuses in the wiring. clearance. 030 in. The typical Berkeley JB/C/G etc. Page 78 MAINTENANCE 1. 03 in. Large Jets use #434-square key $6. ) radius by removing material from bottom side only. Use a 3/16 drill in the large series and a 1/8 drill on the medium and small series. What is the ideal clearance between the impeller and liner? 3C. Sep 12, 2005 · 29. Outboard Jets American Made Quality Conversion Kits For Outboard Motors Menu Skip to content CUT SIZES. Jan 28, 2008 · Oct 17, 2007. determination of intake impeller size - medium series intake/liner model hp impeller size impeller liner diameter a a25 25-35 c35 35-50 f35 35-40 j35 30-35 q35 20-35 z30 30 ai 35-40 am 25-30 bb 30 bd 30 aj-43 30-40 6-1/8" cb 8. 1. Nov 29, 2007 · Not many dealers in Ohio know much about the jet part. 10. Start at one end of the boat and take everything that is not required out of the boat. Good morn'in all,need alittle help with removing my impeller on my 1991 115 merc jet pump. Jan 29, 2008. You may want to look at the wt of seats and floorboards. 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. Things I have done so far: Rebuilt carbs, compression 120-120-122, . Re: Sport jet impeller/wear ring clearance. 40 Jet outboard motor pdf manual download. Place the motor on the transom of your boat so that it is mounted vertically. Remove the impeller plate and oil seal cover. Do we have adaptors to fit a particular jet drive to different motors? 4C. Messages. Every engine needs a cooling system that guards it against overheating. Sep 17, 2003 · 3. 03125 inches, the width of one shim washer), due to gouging. 3 KB: Impeller-Flat-Keys: This will move the impeller further down into the tapered liner to reduce the clearance. Reinstall the wear ring until it just touches the impeller and crank the engine some. Lock in place with three 1/4-20 x 1 3/4 bolts and flat washers. Fits large pumps that use a retai Add to cart. Orders are NOT processed on weekends! Tracking is delivered. 1 KB. After some good use, the output goes down even more. Outboard Jets Inc sent me a new stainless steel one. Mount the 1 1/2 inch thick aluminum adapter to the bearing housing using two 1/4-20 x 1 socket head screws with lock washers. • Worn jet pump impeller or liner. $294. 00 each or #1706-round key $6. Boat builder indicates that my boat (18' welded aluminum w/12. For over 50 years, Outboard Jets has provided quality conversion units for outboard motors designed to allow a boat to be used in locations where a propeller driven boat is unable to operate – in shallow, ankle deep water. Impeller clearance is perfect at around . Then you can get a pair of pliers on that nut and remove it. The 4 blades that fit the 7 3/8 dia pumps are designed for the higher output engines, basically anything bigger than the 115 1. H. #11 · Dec 6, 2009. Posted in: Maintenance & Ownership. Slightly Five Common Signs Of A Bad Impeller In Outboard Engines. Can we change jet impeller pitch for load or speed? No. Another option to further reduce cavitation is a rough water plate. Clearance setting of the impeller to the wear-ring (takes like 1/2-hour maybe 45-min when needed - simply moving shim-washers from above to below the impeller effectively moving the impeller deeper into the wear-ring). 868. #3. 23. Install the jet drive shaft assembly into the spiral pump Usually between . I have a bayliner jet jazz 90hp sportjet which will not go above 5 mph. Your Alaska Outboard Jets Dealer specializing in parts, service, and repair for all types of outboard jet boat motors. Greasing the unit is the high maintenance thing with the clearance between the liner wall and the impeller blades’ edge using a feeler gauge. Outboard Jets American Made Quality Conversion Kits For Outboard Motors Menu Skip to content. Insufficient blade clearance will do more harm than good from any performance gains it might provide. Clean and prepare the surface, ensuring no debris or old gasket material remains. Also we have been asked what is an acceptable clearance over and above the manual determination of intake impeller size - large series acl-44 50 agl50 50 g65 65 t50 50 l50 40-60 6 5/8" cb 106. 3/4-16 brass. When the impeller clearance is satisfactory, bump the nut up snug with a wrench. 00 each. 032" clearance between impeller and housing, impeller looks great, new ride plate gasket, engine rpm's within spec. Berkeley Jet's stainless steel XB impeller is a fresh new design from the company that made jet drives famous. Johnson Evinrude 2023-2024. Jan 25, 2009 · If the unit is pulling 4500 trying to get on the plane then it will be cavitating, you need to pull the unit apart and check the space between the outer edges of the impeller and the wear ring on the housing. 1C. View and Download Mercury 40 Jet manual online. #10. 3. Apr 17, 2002. Size. Add to cart Apr 28, 2016 · 99. I'm in the process of installing a water pump kit have yet to figure out how the impeller is supposed to come off. if you need shaft holder tool use #19-2011. As you can see I have invested alot of money IMPELLER SHIMMING. RPM hardly varies between a heavy load and running fast with a light load. 59. With use in sand in gravel, the blade clearance gap between the impeller edge and the intake liner will eventually exceed 1/32 inch (0. 43 inches in diameter, build up the wear ring slightly. Apr 17, 2002 · 23. ob01410 Shims Clearance between impeller edge and liner Check the impeller clearance by sliding a feeler gauge through the intake grate and measure the clearance between the impeller edge and liner. 108. They give less slippage on start up and therefore can pickup a heavier load. The impeller then can slide off. 03125). I broke the aluminum impeller. Examine the impeller for signs of overheating, such as melting. IMPELLER SHIMMING With use in sand in gravel, the blade clearance gap between the impeller edge and the intake liner will eventually exceed 1/32 inch (0. Jul 14, 2005 · If your impeller is worn so it doesn't measure 6. A Legend bowl has similar dimensions except the suction bolts are 3/8-16 UNC instead of 1/2-13 UNC. I spent most of yesterday attempting to remove the impeller off my jet pump with no success!!!The shoe came off w/no problem and the nut holding on the impeller,I cleaned off the theads and sprayed w/lube,did some prying w/a couple MAINTENANCE Check the impeller clearance by sliding a feeler gauge through the intake grate and measure the clearance between the impeller edge and liner. Does a stainless steel impeller improve performance of a jet drive? See full list on fishwithjd. 015 clearance and got May 1, 2013 · Since then the 3 blade impellers have been redesigned and now there is a 3 blade stainless and a 3 blade non stainless with a slightly different pitch from what was available in a 3 blade back in 2005. Lighten the load or bigger engine. Not touching anywere- I pulled the shoe off after the first run and there is no scrubbing. Small & Medium Jets use #782-square key $6. ob01409 Leading edge Top side lifting angle Impeller Clearance Adjustment The impeller should be adjusted so there is approximately 0. Then remove the intake. Shift the outboard to the neutral Aug 10, 2006 · 115 Impeller replacement. Preparation for New Impeller. Featuring a improved center entry cone from the shaft to the blades to reduce cavitation. If the blade clearance becomes more than 0. Large Jets use #434-square key or #1706-round key. We choose an impeller that gives rated factory RPM at full throttle. To reduce this clearance, one or more of the stainless shim washers can be transferred from the bottom stack to Dec 29, 2008 · Two 3/4 x 1 1/2 x 12 inch pine levers against the housing flange will slide the impeller off. 6 1/8 Aluminum Outboard Jet Impeller 8. • Incorrect jet pump impeller clearance adjustment. ts ov gi sr qr gc ga bu io vx