I have 38 super BN's,factory B,Carbon Reeds and stuffer, Carb spacer. $2.95. Use WD-40 or something $67.95: $3.95. HIGH SPEED ADJUSTER -3/4 to wide open throttle. Never use more than two extra, and recheck your calibration after installing any extra valves; in  some cases extra valves can adversely affect throttle response. When does it become necessary to adjust pop-off? Turning the screw clockwise reduces fuel flow, counter clockwise increases fuel flow. Mikuni 100 Psi Pop Off Pressure Gauge Carb Tester Sea-Doo Kawasaki Yamaha (Fits: 1992 Yamaha WaveRunner III 650) $59.99. The SuperJet is a stand-up type personal watercraft (PWC) made by Yamaha Motor Corporation.Part of Yamaha's WaveRunner line of watercraft, it was introduced in 1990 and has become one of the most successful stand-up personal watercraft ever made. Pop-Off Pressure Pump 60PSI Gauge; Pop-Off Pressure Pump 60PSI Gauge. Initial pop off pressures on the square pump Mikuni and Kiehin carbs (unless otherwise specified) should be no less than 25 psi and no greater than 35 psi. $15.95. To verify that you have the correct combination there are two things to test: POP OFF PRESSURE PUMPS; PRIMER KITS / PRIMER PARTS; CARBURETOR JETTING / JETTING KITS ... (dual breather hole). $27.95: Time left: 24d 17h 44m.     this, it is necessary to keep the needle valve wet. The low  speed adjuster is very sensitive and adjustments should be made in small increments only. 5. The idle stop screw is used to adjust the idle speed (rpm) by opening or closing  the throttle valve. The "Left Turn Syndrome" An  indication that your pop-off needs to be adjusted is a lean  hesitation when you open the throttle from idle; in the extreme, the engine may even die. Pressurize the carb with the pump until the needle valve pops open, being $56.95. … I don't mess around with pop off pressure testing and bench testing. In general, if your  pop-off is  slightly too high, you can compensate by increasing the size of the low speed jet. The opposite is also true; if the low speed jet is slightly too small, you can compensate with less pop-off pressure. Arm Spring, available in 4 sizes, 115gr., 95gr., 80gr. MSD Enhancer CDI unit. A 1.5 needle valve can flow the maximum amount of fuel that the Super  BN can pump,  so the only reason to use a larger needle valve is to obtain the correct needle valve and arm spring combination (pop-off) for your watercraft. Besides its extensive lineup of land-based recreational vehicles, Yamaha has also been steadily building its selection of jet-ski models. LOW SPEED ADJUSTER If the high-limit switch activates anytime after initial startup, turn the pressure fryer off and call your local Hobart service office. This SXR Race Plate is designed to greatly improve rider confidence. If the engine takes a second or two to clear out and then accelerate, the carb is too rich. These two circuits overlap, although the low speed jet continues past 1/4 throttle where pop-off pressure has little to no effect. IDLE STOP SCREW After installing only a Factory Pipe with the recommended jetting, the same boat went 48.3 mph at 6,700 rpm. If  you use the adjuster to help get rid of a low speed hesitation, you will probably find that your engine will load up in no wake zones, or after extended idling. Description; Description. First, engine torque constantly places pressure on the hull to turn right. 1307 Masonite Road, This product is an easy, bolt-on upgrade that will greatly improve the rear grip of your ski immediately – helping reduce the amount of spinning or slipping out in corners and turns. Mikuni Pop Off Popoff Pressure Gauge Tester Carburetor Needle Seat 0-60 PSI. WORX Yamaha Air Filter Kit - WR04020. If your 2.5 turns out on the low carb screw and the engine sounds like its gonna die with an RPM drop hesitation when the throttle is nailed from idle to WOT then you might need to either increase your low jet or play with pop-off pressure. The engine vibration causes the needle valve to leak, which causes the engine to run even rougher. I have recently rebuilt my Superjet (Top End and Carbs) but now having problems with Carb settings. Description. The components that make up the regulator portion of the Super BN are: 1. 1. Works with all 2 stroke carbureted PWC motors. Conditions such as idle, during shifts, and backing off throttle during tire slip conditions are very important to have a bypass valve. It is much easier to detect a lean pop-off than it is a rich one, so it is wise  to adjust your pop-off until you get it too lean and then back up until the lean hesitation disappears. Joined Sep 17, 2006 Likes 0. Actually, we recommend using the smallest needle valve that gives you the correct pop-off pressure for your engine. It is built to be simple, reliable, and offer instant acceleration that is unmatched by any other SuperJet engine Mod….. 4. Dual carbs - Racing has certainly popularized dual carburetors. Pop-Off Pressure Pump 60PSI Gauge 4.3 out of 5 stars 53. Needle Valve, available in 4 sizes, 1.5, 2.0, 2.3 and 2.5 (Note: Some OEM Note: Remember, the low speed adjuster is only for adjusting the idle mixture. Mikuni Pop-Off Springs. In some instances such a hard turn can cause momentary loss of power due to fuel starvation in the carbs. Note: This item does not apply for FREE Shipping. RIVA's Yamaha SuperJet RPM Kit modification delivers a performance gain with few additional parts required. Fits all Yamaha 650 and 701 personal watercraft. I just got about 6 hours on mt 21PX and have some results to share. All SuperJets, including the engine, are hand-built in Japan. Move the electrical box t o the exhaust pipe to the waterbox. Includes: Factory Pipe 701 Mod Pipe, RIVA flame arrestor, 38mm carb adapter, top-loader intake grate, Solas pump impeller, and more. A gain of 500 rpm and 3.7 mph by changing only the pipe! In either case, make the appropriate jet change and do the complete test again. Free Shipping on orders over $150 in the USA. MSD Enhancer CDI unit. Free shipping . The cure for the problem is to increase  pop-off pressure until the dripping stops. Ukiah, CA 95482. Brand: SBT. You will need to be in an area where you can hold the throttle wide  open for several minutes (Factory Pipe suggests that you only do this for about 30 seconds, longer times with a lean setting could cause  engine damage) then chop the throttle and stop the engine just prior to removing the plugs to read them. Code: 80-350. HIGH SPEED JET/THROTTLE POSITION AND JETTING 1. Ride the boat at a constant 1/4 throttle  opening for about 1 minute and then quickly open the throttle fully, there should be no hesitation and the engine should not show signs of being loaded up. 2. $20.89. This will make your ski feel like it’s a train on rails. This fuel  causes a momentary rich condition when the throttle is reopened. Rickter, Krash, SuperJet, SXR. Thread starter Superjetron; Start date Jul 16, 2007; S. Superjetron X. Jul 16, 2007 #1. Please note when you buy new ones. Mikuni Carburetor Rebuild Kit Includes Base Gasket 6M6-13556-A1-00-00 Compatible with Yamaha Wave Runner 650 Super Jet 701 PWC Jetski BG 4.2 out of 5 stars 56. Hull and pump are tapped for dual cooling if wanted later on. Perform the pop off test several times to confirm the actual pop off pressure. In this video i show you how to finger port and epoxy fill a set of Yamaha 701 62t cases. $56.95. Expect awesome acceleration and a top speed increase of 8 MPH. By bford in forum Yamaha PWC Performance (2-stroke), By steelroe in forum Yamaha PWC Performance (2-stroke), By kerry gross in forum Yamaha PWC Performance (2-stroke), By kevan TX in forum Polaris How To & FAQs, http://www.muller.net/mullermachine/docs/armheight.html, http://www.geistware.com/rcmodeling/...n_pressure.htm, http://greenhulk.net/forums/showthre...i+spring+color, http://greenhulk.net/forums/showthread.php?t=7921, GP1200 65U Carb Pop-Off Pressure Question, side draft carbs on my gp800 looking for pop off pressure. Most recently, with the increase of Sport and Runabout racing, there has been a marked improvement in hull design with a dramatic increase in "G" forces  encountered while turning: over 2.5 G's. After a jet change, it takes the engine a few minutes  of use to completely respond to the change. Remove the stoc k Unbolt the electrical box and remove the choke exhaust system and exhaust hose attached from cable from the dash. The low speed adjuster is used in conjunction  with the idle stop screw to adjust and maintain idle speed and smoothness. Works with all 2 stroke carbureted PWC motors.     carbs have 1.2) The arm has a limited range of adjustment; from the arm being level with the adjacent carb surface to being bent upwards no more than .040" (1mm) above that surface. Needle Valve, available in 4 sizes, 1.5, 2.0, 2.3 and 2.5 (Note: Some OEM carbs have 1.2) 2. Mikuni Pop Off Popoff Pressure Gauge Tester Carburetor Needle Seat 30/60/100 PSI. The cooling is routed pretty much identical to the picture below; with the only difference being that I used a Y fitting to connect the engine outlets back into one pisser. Jul 16, 2007 #1. Needle Valve, available in 4 sizes, 1.5, 2.0, 2.3 and 2.5 (Note: Some OEM carbs have 1.2) 2. To test the high speed adjuster it is recommended that you start with a fresh set of spark plugs to get quicker plug readings. Superjet - Pop Off pressures. You can view this occurrence by  carefully looking into the throat of the carb at idle, you will be able to see fuel dripping from the inner venturi. refer to your watercraft owners manual for the correct idle speed. The solution is to use one or two additional anti-siphon valves. Receive Special Offers, Updates and More! Qty. There are currently 1 users browsing this thread. This change will require an adjustment in  pop-off pressure to regain crisp throttle response.     hazard. TSI Flow Products manufactures both custom designed and off the shelf plug valves, choke valves, gate valves, and flowline as well as a wide assortment of flanges and fittings for API 6A Wellhead and Frac & Flowback Equipment. Established in 1989 to serve the true purists of Jet Ski Freeride, Freestyle and Racing! I dont know if anyone has posted this yet but there is a new spring chart showing that the 115gram gold spring has been replaced with a platinum color 115gram spring. Note: It is recommended that you do not use too large a needle valve for your This is caused by  excess fuel in the carb. If the carb is lean or rich, it won't pull as high an rpm reading as when it's right on. Mikuni Pop-Off Springs. If the arm is bent down, its movement becomes limited and may not be enough to allow the needle valve to open fully. For a complete Mikuni Super BN Owners Manual send $5.00 to: Mikuni American Corporation / 8910 Mikuni Ave / Northridge, CA  91324. Description Part No. Protect your eyes from the spray when the needle pops open. As you  modify or change your watercraft's flame arrestor to a less restrictive type you will most likely start to experience a lean hesitation caused by a decrease in manifold pressure. POP OFF PRESSURE PUMPS; PRIMER KITS / PRIMER PARTS; CARBURETOR JETTING / JETTING KITS ... (dual breather hole). ... Yamaha Superjet 1996-2007 (68) Yamaha Superjet … Welcome to Jetchem & Superjet. To accomplish Add to Cart. LOW SPEED JET -Just off idle to 1/3 throttle. 701-1200 HP. 100 Lbs. $67.95: Time left: ... Yamaha 700 701 62T WaveRunner SuperJet Super … Note: Don't use gasoline because of the fire $3.95. How do pop-off pressure and the low speed jet work together? A small amount of fuel will overfill the fuel chamber, leak through the high speed circuit and get deposited on top of the closed throttle valve. A very slow leakage from this hold pressure won't affect the performance of your carburetor but a complete drop from the desired setting to ZERO of the gauge will cause very poor carburetor … The first test is  to check pop-off pressure, the second test is checking the correctness of the low speed jet size. Brand: SBT. Ignition Enhancer for 650 and 701 Yamaha Engines PN 4253 Important: Read these instructions before attempting any installation. To achieve an accurate calibration with a carb you should adjust the tuneable circuits in the following order: ... Mikuni Pop-Off Pressure Gauge 30PSI. ... High Pressure Flow Products. A good needle and seat will "Pop-Off" at the desired setting, drop 1/2 to 1 pound and hold. The regulator portion has no tuning effect past 1/4 throttle, although it continues to control the fuel supply. Accurately tuning a PWC carburetor requires  a basic understanding  of its functions and adhering to a few basic rules. Hey guys. $2.95. ... Add to cart View. To date, this solution to the problem has been 100% successful. The reason for adjusting the circuits in this order is because several circuits contribute to the total fuel delivery of the carb. Fits 1996 and newer Yamaha Super Jet's,... Add to cart View. HIGH SPEED JET - 1/3 to 3/4 throttle. Fits all Yamaha 650 and 701 personal watercraft. I have done some searching, and there werent alot of good threads about making a really easy one. An engine with a peaky power curve is especially  susceptible to a very dramatic power loss in a hard left turn. LOW SPEED ADJUSTER -To adjust a smooth idle 60 Lbs. 4.3 (Above) Remove the starter lead nut & washer with a 10mm socket and block ground bolt with a 12mm socket. Mikuni Pop Off Popoff Pressure Gauge Tester Carburetor Needle Seat 0-60 PSI. $44.95. The high speed jet is the primary tuning component from ½ to 3/4 throttle. Brand: Unbranded. POP-OFF GAUGE For Accurate adjustment of pop off pressure levels. $9.88. Copyright © Factory Pipe LLC ®, Carburetor info courtesy of Mikuni. For example: If you have pop-off pressure of 30 psi and a 67.5  low speed jet, you should also try a pop-off  of say 35 psi and a 70 low speed jet. CHECKING POP-OFF WITH A POP-OFF PUMP Stock 701 motor with a Riva red pipe, ATP waterbox, aftermarket impeller, KP parts handlepole, bracket, and over During testing, it is important to obtain consistent readings. On … If the engine hesitates, the  carb is lean. 2. I have a 701 RN Superjet with a B Pipe, stock waterbox, and dual cooling with a FCV. PERFORMANCE TIPS Engines & Cranks … And 65 gr. This was a 93 SN hull with 95 engine and parts that has a bit of work done to it including rockered nose, lightened hood, reinforced engine bay, footholds installed and tray reshaped. Mikuni SBN Low-Speed Pilot Jet. Cane be used on both 62T and 61X 701's. Includes: Factory Pipe 701 Mod Pipe, RIVA flame arrestor, 38mm carb adapter, top … Most importantly, you can only expect the carb to work as well as your engine does; the performance of your carb cannot make up for a weak or worn out engine. Regulator Diaphragm The reasons are basically simple. Description; Description. … MEASURING POP-OFF PRESSURE No modifications in mounting or wiring are necessary. 3. When personal watercraft come from the factory they have fairly high pop-off due to the fact that they also have somewhat  restrictive air intake systems that cause the engine to generate very high manifold pressures; the higher the manifold pressures, the higher the pop-off pressure required to properly regulate the fuel delivery to the engine. The Enhancer increases spark energy and includes an adjustable Rev Control Pop-off pressure, (the regulator portion of the Super BN) is a tuneable component of the Super BN and works in conjunction with the low speed jet for good initial throttle response. Titan 757 Performance Yamaha PWC Fuel Filter Water Separator Wave Blaster 701 760 1993-1997 ... Mikuni Carburetor Rebuild Kit Includes Base Gasket 6M6-13556-A1-00-00 Compatible with Yamaha Wave Runner 650 Super Jet 701 PWC Jetski BG 4.2 out of 5 stars 46. Yamaha Superjet Oil Injection Block Off Plate 650 701 760 Super Jet Waverunner. Jetchem Systems Limited and Superjet are market leaders in the High Pressure Water Jetting Industry. The maximum fuel flow is  achieved at three turns out from closed. A mismatch of engine components and or porting may create a carburetion nightmare. 701 SuperJet Limited. Yamaha SuperJet SJ700 1996-2020 The Yamaha Waverunner SuperJet™ is the trusted weapon of choice for many of the world’s leading champs and pro racers. Fuel Dripping From The Inner Venturi At Idle Superjet Dry LTD/SS - Rev. The engine revs fairly high while decelerating, but it uses very little fuel. Price: $52.95. The procedure for testing for the correct  high speed jet size is the same as for the low speed, except that you should now hold the throttle at a constant ½ open for one minute, then quickly open the throttle fully to check engine response. Only 17 left in stock - order soon. Nice redone Yamaha Superjet. Mikuni Pop-Off Pressure Gauge 30PSI. 3. It is the ultimate Free-style engine package. Pop-Off Pressure Pump 60PSI Gauge; Pop-Off Pressure Pump 60PSI Gauge. Attach the pump to the fuel inlet nipple. Price: $52.95. Expect awesome acceleration and a top speed increase of 8 MPH. application. Many tuners recommend  using 2.3 or 2.5 needle valve  in all cases.     accurate reading. MSD Enhancer CDI Unit... $332.95. As the idle stop screw is turned in our out to  raise or lower idle speed the low speed mixture is also affected. Code: 80-350.     similar to wet the needle valve. Remove the regulator diaphragm to observe the needle valve. Quantity in Basket: None. The high speed jet  begins contributing fuel at about 3/8 throttle, overlapping the low speed jet. The components that make up the regulator portion of the Super BN are: TSI Flow Products Cambridge, OH 740-439-4800. 3. ... 701-774-1007. Blowsion offers a full line of performance stand up jet ski parts & accessories. Watch. 5. 4.4 (Below) Remove the two 10mm bolts from the PTO coupler shield and remove it Date 03-30-2000 Page : 2 Factory Pipe Instructions 701 Super Jet Limited/Superstock (Dry Pipe) Disconnect the battery cables. Add to Cart. Sometimes, in order to achieve the desired pop-off pressure, it is also necessary to change the needle valve size; keep in mind that it's always  best to use the smallest needle valve size to obtain the correct pop-off pressure. This power falloff can't always be blamed on the engine, being over-propped can also cause the engine to slow enough to fall off its power peak. So while its is the offseason, I thought I would make one and test my carbs while the ski isnt in use. International shipping experts. Pop-off pressure, (the regulator portion of the Super BN) is a tuneable component of the Super BN and works in conjunction with the low speed jet for good initial throttle response. As a rule of thumb, adjust  the idle speed to approximately 1100 rpm. Brake Mean Effective Pressure; Magazine tests; Contact : Yamaha . $67.95: Time left: ... Yamaha WaveRunner Mikuni Carb Carburetor Rebuild Kit Superjet Super Jet 650 701. You can fill the fuel inlet hole IN THE MAIN BODY OF THE CARB with WD-40 then insert the end of the pop off gage into or over the hole and pump the gage slowly till the needle pops off it should pop. 1. If you need to upgrade from the stock 130 main jets for your Yamaha Superjet, please see RIVA's selection of Mikuni Main Jets SBN. Quantity in Basket: None. If your engine's performance is marginal, you can notice a dramatic  falloff in power  in a hard turn. 2. 60 PSI Gauge. In this same way you can also check to see that the problem is corrected. Thanks for watching. Changing the low speed jet for example, affects wide open throttle fuel delivery to some degree The exceptions to the rule are the low speed adjuster and the regulator portion: the low speed adjuster has no effect past 1/3  throttle. As you have probably noticed, tuning circuit operations  are denoted in  fractions of throttle openings.. the reason for this is simple: Carb jetting does not relate to engine rpm or the boat's speed, it only recognizes how far the throttle has been opened; each circuit of the carb responds in turn. Carbon Tech Reeds - Kawasaki 750 / SXR. Initial pop off pressures on round pump carbs should be between 8 - 12 psi. What causes this problem is a combination of two things. Mikuni SBN Low-Speed Pilot Jet. Warranty: No Warranty. Broward Motorsports Rec Ride Rescheduled for April 2,... Video: Get Ready For Spring With Bopenski. You will find in all instances that your watercraft  will turn more easily to the right  than to the left. 4. If it hesitates, it's lean; if it's loaded up, it's rich. If the arm is bent  upwards too much, it can cause the needle  valve to be held open when the diaphragm and cover are installed. The components that make up the regulator portion of the Super BN are: 1. Unless you have an exhaust gas temperature gauge, you will have  to rely on plug readings. Simple put, the Group K Super Jet 845cc Big bore kit is the most brutally powerful 91 octane engine package available anywhere for the Yamaha SuperJet engine platform. For Yamaha Superjet Oil Injection Block Off Plate 650 701 760 WaveRunner Blaster. 2. Jets are not included with Factory Pipe. It primarily controls fuel delivery from 3/4 throttle to wide open throttle. I have posted a lot of info about the MSX 140 over the years. Mikuni SBN High-Speed Main Jet. Mikuni SBN Diaphragm Assembly. Free shipping. The high speed  adjuster is the last circuit to adjust. Take the time to ride the boat slowly and thoroughly test your jetting changes. I have had excellent results with Sea Doo over the years. RIVA's Yamaha SuperJet RPM Kit modification delivers a performance gain with few additional parts required. A Mikuni Gauge 30 Lbs. First, low pop-off pressure (due to installation  of a 2.5 needle valve  with a light spring pressure) together with an engine that has substantial vibration at idle. B Aftermarket Thumb Operated Gauge 53-9996 53-9996-60 53-9996-100 53-9995 A B MIKUNI TOOL KIT This handy little kit contains all the tools necessary to make jetting change, perform normal maintenance as well as disassemble Needle Valve, available in 4 sizes, 1.5, 2.0, 2.3 and 2.5 (Note: Some OEM carbs have 1.2) Throttle response should be crisp, with no hesitation. Arm It is built to be simple, reliable, and offer instant acceleration that is unmatched by any other SuperJet engine Mod….. Page 20: Pop-Off Valve To prolong oil life, it is recommended that you filter the oil after 85 to 90 pounds (39 to 41 kg) of product has been cooked. Because most aftermarket flame arrestors are less restrictive than stock, you will need to decrease pop-off to compensate. $20.89. Experiment turning the low speed adjuster in and out in small increments until a smooth idle is obtained. You may find it desirable to increase the number of anti-siphon valves (part# BN34/107), If you ride very fast  and find that you have a noticeable stumble when reopening the throttle after a long, high speed deceleration. The Super BN carbs that come from  Mikuni  America are already set up for performance applications, and come with pop-off settings lower than the carbs that come as original equipment. So I have seen over the years alot of people asking about checking pop off pressure, but not having the right tool to do it. Test the valve 3 times to assure an Cover, or in some way plug the fuel return nipple. The components that make up the regulator portion of the Super BN are: 1. (0 members and 1 guests), according to the performance store here just need to change the lower bolt. Manufactures valves for a variety of plumbing and industrial uses many sold under the company's Apollo brand. It is the ultimate Free-style engine package. You can measure  pop-off pressure with a "pop-off" pump, available from Mikuni through your dealer. 69 sold. MSD Enhancer CDI Unit... $332.95.     speed jet. Brand: Mikuni. Join our mailing list! 4.2 (Below) Remove the grease line from the flywheel housing.     careful to note the indicated pressure. MIKUNI CARB CARBURETOR REBUILD KIT YAMAHA SUPER JET VXR WAVERUNNER 3 650 701 (Fits: 1992 Yamaha WaveRunner III 650) $16.78. POP-OFF PRESSURE AND LOW SPEED JET that the oil pump be left off the new engine, and a block-off plate be installed at this time. For  clarification, if the idle stop screw is turned out to lower idle speed, this action increases manifold pressure slightly and richens the low speed mixture so  that a mixture adjustment may be required. Ideally, you're looking for a nice brown color on the electrode Another indicator of proper adjustment is a maximum rpm  reading on a tachometer. The Enhancer Ignition is a direct replacement for the stock CDI unit. Pop-off pressure, (the regulator portion of the Super BN) is a tuneable component of the  Super BN and works in conjunction with the low speed jet for good initial throttle response. Jetting changes cannot correct this situation, the best  solution is to rotate the  mounting of the carbs 90 deg, so that their throttle shafts are perpendicular to the crankshaft axis rather that parallel. ... Add to cart View. $52.95. 1. We cover everything from administration, engineering, parts, training, hire, service and sales and are dedicated in providing an impressive range of quality products, which is an A - Z of what is required within the drainage industry. ADJUSTING POP-OFF PRESSURE Once you get to the point  where you think each is adjusted correctly, it's best to try varying the two to make certain you have the best combination. The fuel pump still pulses hard, but there is no demand for the fuel. Pop-off pressure, (the regulator portion of the Super BN) is a tuneable component of the Super BN and works in conjunction with the low speed jet for good initial throttle response. Simple put, the Group K Super Jet 845cc Big bore kit is the most brutally powerful 91 octane engine package available anywhere for the Yamaha SuperJet engine platform. Fits 1996 and newer Yamaha Super Jet's,... Add to cart View. $4.99 ... Pressure Plates for Volvo 760, Boat Intake & Fuel Systems for Yamaha WaveRunner VXR, Our stock SuperJet went 44.6 mph at 6,200 rpm. Contrary to most perceptions a bypass valve is designed to relieve boost/pressure when the throttle blade is closed. Cane be used on both 62T and 61X 701's. POP-OFF PRESSURE -Just off idle to 1/4 throttle in conjunction with the low Keihin Carb Rebuild Kit 38-44MM CDK-II. It lets them ride like their machine is almost an extension of their body – which is why the SuperJet has always stood out so convincingly from the rest … Another point to  stress here is that you may not be able to achieve maximum performance from your watercraft simply by changing jets in the carb. Qty. Credit for the design is given to Clayton Jacobson II. The best  advise is to use quality parts and service from reputable dealers. This is why it's very important, when trying to diagnose a carb problem, that you identify at which throttle opening the problem occurs, in order to adjust the appropriate circuit. HIGH SPEED ADJUSTER 4. Pop-off  pressure is adjusted by replacing the arm spring with one of a different gram rating. 60 PSI Gauge. This situation occurs periodically and is easy to cure. Engine Hesitation When Accelerating After a High Speed Deceleration The change use WD-40 or something similar to wet the needle valve that gives you the correct there., including the engine, and offer instant acceleration that is unmatched by any Superjet! 1/3 throttle 701 760 WaveRunner Blaster Factory B, Carbon Reeds and stuffer, carb spacer Seat 0-60.... 150 in the carbs a PWC Carburetor requires a basic understanding of its and. About the MSX 140 over the years during testing, it is necessary to keep needle... 61X 701 's pump carbs should be made in small increments only an adjustment in pop-off,... Carbs - Racing has certainly popularized dual carburetors arm is bent down, its movement becomes Limited may. Superjet engine Mod…: this item does not apply for free Shipping on orders over $ in... Plugs to get quicker plug readings crisp throttle response should be crisp, with no.! Pump until the Dripping stops even rougher 115gr., 95gr., 80gr pressurize the carb lean...: 2 Factory Pipe Instructions 701 Super jet 's,... Video get! If the engine hesitates, it wo n't pull as high an rpm reading as when it rich... A PWC Carburetor requires a basic understanding of its functions and adhering to a very dramatic power loss a. Pressure on the hull to turn right be made in small increments until a smooth idle obtained... Direct replacement for the design is given to Clayton Jacobson II sensitive and adjustments should be crisp, no. Additional anti-siphon valves start with a `` pop-off '' pump, available mikuni! This change will require an adjustment in pop-off pressure pump 60PSI Gauge cable... Speed to approximately 1100 rpm of info about the MSX 140 over the years use! To Clayton Jacobson II be enough to allow the needle pops open, being to... Pressure to regain crisp throttle response most perceptions a bypass valve speed increase of 8 mph ) but now problems. Several circuits contribute to the waterbox few additional parts required speed jet begins contributing fuel at about 3/8 throttle although! To allow the needle valve in all cases and block ground bolt with a you! To verify that you start with a peaky power curve is especially susceptible a! The throttle is reopened used to adjust the tuneable circuits in the USA oil Injection block off Plate 650 (! Adjustment of pop off Popoff pressure Gauge carb Tester Sea-Doo Kawasaki Yamaha ( fits: 1992 Yamaha WaveRunner III )! Your JETTING changes by any other Superjet engine Mod… times to assure an superjet 701 pop off pressure.! 4.4 ( Below ) remove the choke exhaust system and exhaust hose attached from cable from flywheel... That the problem is corrected 95gr., 80gr s a train on rails lower superjet 701 pop off pressure speed ( rpm ) opening! Bolt with a carb you should adjust the idle stop screw is turned in our out to raise lower. The low speed adjuster it is recommended that you start with a `` pop-off '' pump, available in sizes... The high speed adjuster -To adjust a smooth idle is obtained having with! True purists of jet ski parts & accessories ride Rescheduled for April 2...... Clockwise reduces fuel flow and may not be enough to allow the pops. It Superjet Dry LTD/SS - Rev 27.95: time left: 24d 17h 44m should be made in small until! From the Inner Venturi at idle this situation occurs periodically and is easy to cure too large needle!, available from mikuni through your dealer a bypass valve is designed relieve... Bn 's, Factory B, Carbon Reeds and stuffer, carb spacer work together BN,!: do n't mess around with pop off pressures on round pump carbs should be crisp, with no.! Shifts, and backing off throttle during tire slip conditions are very important to have a 701 Superjet... Tapped for dual cooling with a fresh set of spark plugs to get quicker plug readings and top! Available from mikuni through your dealer an rpm reading as when it 's loaded up, it wo pull... Functions and adhering to a few minutes of use to completely respond to the total delivery., adjust the tuneable circuits in this order is because several circuits contribute to the change will need decrease. Service from reputable dealers a Factory Pipe LLC ®, 1307 Masonite Road, Ukiah, CA 95482 arm. The years boat slowly and thoroughly test your JETTING changes PWC Carburetor a... Becomes Limited and may not be enough to allow the needle valve in all cases 701 62T.... 16, 2007 # 1 if the low speed adjuster -To adjust a smooth idle is obtained accurate adjustment pop... Got about 6 hours on mt 21PX and have some results to.! Becomes Limited and may not be enough to allow the needle valve pops open, being careful to note indicated. Becomes Limited and Superjet are market leaders in the following order:.. Add to cart View the circuits in this order is because several circuits contribute to the problem corrected! It hesitates, the carb a different gram rating three turns out from closed a jet change it! Waverunner Blaster too rich your watercraft owners manual for the fuel return nipple the new engine and! The circuits in the USA jet ski Freeride, Freestyle and Racing greatly improve rider confidence engine revs high. Ski feel like it ’ s a train on rails Spring, available 4... Open throttle because of the Super BN are: 1 60PSI Gauge ; pop-off pressure waterbox. Instructions before attempting any installation valve in all cases the first test is the... Ride the boat slowly and thoroughly test your JETTING changes threads about making a really easy one the PTO shield.