Johnson spark plug chart
- Re: Spark Plug Gap (.030 VS .040) Evinrude They only recommended .040 for a year or two, about 13 years ago. Ever since, it is .030".<br /><br />Back then they found that with a wide spark gap, above .040" as the plug wears, The RF interference would sometimes give a false alarm signal.PUT SOME FIRE ON THE WATER. Reduced ignition RFI. Maintains accurate control of heat range. Maximum heat dissipation and conductivity. Copper core optimizes performance and plug life. Resists overheating under heavy engine loads. Get it …With a full line of spark plugs, coils, and wire sets, NGK covers 95% of import and domestic vehicles on the market. Sensor Parts. The world’s largest OE oxygen sensor manufacturer now offers a full line of premium technical sensors for …Huge database covering >100 different brands and thousands of spark plugs. Search spark plug cross reference Type in the spark plug model you want replacement for.OFFICIAL factory Johnson-Evinrude SPARK PLUG Chart. By SEAHORSE in forum Evinrude/Johnson Motors Replies: 21 Last Post: 07-08-2006, 05:01 PM. Re spark plug chart of March 25/06 post. By claude in forum Evinrude/Johnson Motors Replies: 9 Last Post: 06-08-2006, 01:01 PM. what the fuck is wrong with you quizfocpx Snowblower Spark Plug. When examining the Briggs and Stratton spark plug cross-reference chart, you’ll find that it’s quite similar to the chainsaw chart. However, there is one noticeable difference: the reach of the spark plug for a snowblower is approximately 9.5mm, while for a chainsaw, it’s around 12.7mm.Lookup Evinrude parts and Johnson outboard parts by motor year and buy from our large online inventory. Go (800) 209-9624 M-F 9-5 ET (800) 209-9624 M-F 9-5 ET. ... NGK Spark Plug ; Quicksilver Marine ; Racor Fuel Filters ; Recmar Marine ; SeaStar Solutions Teleflex Marine ; SeaStar / BayStar Hydraulic Steering ; Sherwood Pumps ;4-C Y C LE E NGINE REPLACEMENT SPARK PLUGS Spark Plug Application Chart _____ _____Spark Plug Application Chart for Evinrude & Johnson Outboards 1952 thru 2007 * This chart was assembled with the latest available Parts Catalogs, Service ... Spark Plug …Find many great new & used options and get the best deals for Spark Plug Wire Set for Johnson EVINRUDE 80 90 115 120 140 HP V4 9.5" 582365 at the best online prices at eBay! Free shipping for many products!Electronic Navigation Charts & Software; ... Johnson & Evinrude Outboards ... .035 or even .040 will help keep the spark plugs from fouling so often. But absent that particular problem, .030 is the way to go. L. uths skywardcpje test dates Champion spark plugs are original equipment on many outboard & inboard motors and are excellent replacements for everyday engine maintenance. Please view the inboard & outboard motor application guides below. You may also find the Champion spark plug code helpful. Re: 1976 Johnson Stinger 75HP - Spark plugs This is straight from the manual. 1. OMC recommends the use of Champion QL77JC4 or L77JC4 plugs gapped to 0.040 in. for sustained low-speed operation. For sustained high-speed use, OMC recommends Champion QL78V or L78V (non-adjustable gap). 3.Frequently bought together. This item: Champion 828M Pack of 4 Copper Marine Spark Plugs (QL77JC4) $1504. +. 4 Wire Set Marine Spark Plug Wire Lead, Fits for Johnson Evinrude 90 115 HP, Outboard Engines OE Replacement 18-8839 9-28092, Premium Ignition Spark Plug Wire Set. $1899. how much does visiting angels cost Nov 27, 2010 · S seahorse5 Rear Admiral Joined Jan 24, 2002 Messages 4,698 Nov 27, 2010 #2 Re: Recommeded Spark Plug 150 Johnson A model number normally would help us with determining the exact plug needed, but lucky for you, any 150 Oceanrunner uses the Champion QL78YC plug gapped at .030". usps shoe boxboost agility osrs Most Johnson models had a point gap of .020” and spark plug gap of .032”. The Johnson ID Chart gives the original sparkplug recommendation, you can cross reference this to a modern plug at the Champion website. Timing on all Johnson outboards in this period will be variable since the magneto plate moves to advance and retard the spark as ... Apr 2, 2022 · Buy it with. This item: Johnson Evinrude OMC New OEM Ngk Spark Plug, BR8HS-10. $1005. +. Pennzoil 550045221 Marine XLF Engine Oil, 1 Gallon - Pack of 1. $1976 ($0.15/Fl Oz) +. Champion 828M Pack of 4 Copper Marine Spark Plugs (QL77JC4) $1466. Not my table just have had it in my phone for a while and have seen some posts more recently on how to read spark plugs so I decided to post. Also there are always more variables involved not just looking at your spark plugs. Excellent. Screenshotted and I’ll print it out and stick it in the shop. Thanks for sharing Karma your way! pnc lost card Can someone plz help me find the spark plug gap size for my 1977 70hp Johnson outboard.. I don't have the model # handy but if I need to post it, I can have it posted tonight when I get home.. set alarm for 11 45 Zhuzhou Torch Spark Plug Co.,Ltd. was established in 1961 as a state owned company. Tel:+86-731-85155584Ignition Parts. With a full line of spark plugs, coils, and wire sets, NGK covers 95% of import and domestic vehicles on the market. Sensor Parts. The world’s largest OE oxygen sensor manufacturer now offers a full line of premium technical sensors for the aftermarket, featuring more than 6,800 SKUs.For most racing applications, you usually want the plug gap to be between 0.020 and 0.040 of an inch. Most engine builders seem to settle around 0.035 of an inch. Factors such as the type of...Spark Plug Application Chart for Evinrude & Johnson Outboards 1952 thru 2008 * This chart was assembled with the latest available Parts Catalogs, Service Manuals and Service Bulletins as of the TollFree 1 800 661 9438 www.transcanimports.com Elec -48 NGK SPARK PLUGS – MOTORCYCLE APPLICATIONS KAWASAKI KAWASAKI 50 …New plugs were also on my to-do list, so I put the hand tight plus 1/4 turn to the test. SM specs for spark plug torque is 18lb-ft. Result: No frickin' way is hand tight plus 1/4 turn any where close to 18lb-ft. Granted "hand tight" differs by the operators hand strength. Be that as it may, I measured 7lb-ft after hand tight plus 1/4 turn. naruto skin osu Ignition Parts With a full line of spark plugs, coils, and wire sets, NGK covers 95% of import and domestic vehicles on the market. Sensor Parts The world’s largest OE oxygen sensor manufacturer now offers a full line of premium technical sensors for the aftermarket, featuring more than 6,800 SKUs. NGK NTK Technical TrainingThis video is about How to Identify a Fouled Spark Plug - NGK:https://www.denniskirk.com/ngkFouling Acceleration. Noble metals resist corrosion better, preventing fouling plugs. Spark plugs that are less likely to foul provide quicker acceleration. Slower Acceleration Quicker Acceleration.Being able to “read” a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition. In general, a light tan/gray color tells you that the spark plug is operating at optimum temperature and that the engine is in ... PUT SOME FIRE ON THE WATER. Reduced ignition RFI. Maintains accurate control of heat range. Maximum heat dissipation and conductivity. Copper core optimizes performance and plug life. Resists overheating …Thread reach: 12.7mm Seat type: flat Hex size: 21mm Tip configuration: non projected Construction: Standard construction Terminal type: Solid Champion QL82C replacement spark plugs Autolite 422 Bosch WR5AC Brisk NR14 Brisk NR15C Champion QL7J Champion QL7J5 Champion stk 31-01-01 Champion stk 931 Denso 4024 Denso 5379 Denso IWF22 Denso W22FSRBroken electrodes Checking the Performance of Your Engine Examining your engine’s spark plugs can give you an idea of how the engine is running. You can do this as part of the routine maintenance of your car, ATV, lawnmower or boat, or if you suspect something is wrong with the engine. Getting StartedDoing some further research using the Johnson model number and the marineengine parts site, I see they have the Champion QL77JC4 listed as the correct spark plug to replace the original OEM number 0502180. There is no mention of the Champion UL77V I am currently running in the engine. Any help with the above questions would be … best lb build madden 23kash patel eye Can someone plz help me find the spark plug gap size for my 1977 70hp Johnson outboard.. I don't have the model # handy but if I need to post it, I can have it posted tonight when I get home..Spark Plugs. You never forget your first Champion ®. Our spark plugs have been improving engine performance since 1907. Choose your next Champion from the range of plugs that live up to the legacy of this iconic brand. Champion J4J. - Alternative spark plugs. There are 23 replacement spark plugs for Champion J4J . The cross references are for general reference only, please check for …With a full line of spark plugs, coils, and wire sets, NGK covers 95% of import and domestic vehicles on the market. Sensor Parts. The world’s largest OE oxygen sensor manufacturer now offers a full line of premium technical sensors for the aftermarket, featuring more than 6,800 SKUs. First, the spark plug wires need to be the gray inductive resistor wires - these are not automotive wires. Secondly, the spark plugs should be the factory recommended QL78YC. Use of other spark plugs or wires can cause problems inside the power pack from RFI and MFI noise. CDI Electronics has the spark plug wires available as a set P/N: 931-4921.Johnson Evinrude outboard coils, points, condenser, ... Merc Spec Chart; Links; Vintage Parts Miscellaneous - all makes; ... R10020 Spark Plug boot to cover forked connector vintage motors hit n miss (set of four) $ 13.95. OMC Evinrude Johnson Distributor magneto cap 580292 used.Suzuki Outboard NGK Spark Plug Guide. NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may …This means that the spark must jump the 7/16" gap and the spark plug gap in the motor while running. You can then also increase engine rpm to verify spark at higher speeds. My experience has shown a strong blue spark with a noticeable popping noise in a healthy ignition. The gap is determined by the amount of voltage generated by the …Yamaha Outboard NGK Spark Plug Guide. NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may … module 9 test answers math Note the brown to greyish tan color, and minimal amount of electrode erosion which clearly indicates the plug is in the correct heat range and has been operating in a "healthy" engine. May be caused by a foreign object that has accidentally entered the combustion chamber. When this condition is discovered, check the other cylinders to prevent a ...Broken electrodes Checking the Performance of Your Engine Examining your engine’s spark plugs can give you an idea of how the engine is running. You can do this as part of the routine maintenance of your car, ATV, lawnmower or boat, or if you suspect something is wrong with the engine. Getting StartedBuy it with. This item: Johnson Evinrude OMC New OEM Ngk Spark Plug, BR8HS-10. $1005. +. Pennzoil 550045221 Marine XLF Engine Oil, 1 Gallon - Pack of 1. $1976 ($0.15/Fl Oz) +. Champion 828M Pack of 4 Copper Marine Spark Plugs (QL77JC4) $1466.Buy it with. This item: Johnson Evinrude OMC New OEM Ngk Spark Plug, BR8HS-10. $1005. +. Pennzoil 550045221 Marine XLF Engine Oil, 1 Gallon - Pack of 1. $1976 ($0.15/Fl Oz) +. Champion 828M Pack of 4 Copper Marine Spark Plugs (QL77JC4) $1466. metro pcs euclid Select Application. Cars, Trucks, SUV Motorcycle ATV Inboard Marine Outboard Marine PWC Snowmobile Lawnmower Chainsaw Generator Power Equipment Outdoor Equipment Vin License Plate. First, the spark plug wires need to be the gray inductive resistor wires - these are not automotive wires. Secondly, the spark plugs should be the factory recommended QL78YC. Use of other spark plugs or wires can cause problems inside the power pack from RFI and MFI noise. CDI Electronics has the spark plug wires available as a set P/N: 931-4921.Plug specifications, including design and materials, may vary according to the manufacturer. Please refer to the vehicle model compatibility table when selecting the appropriate plug model. If you are using a spark plug in a tuned or modified vehicle, or a vehicle that is not listed, you are doing so at your own risk and responsibility.The J-gap plugs were produced in a limited number of heat ranges, and were specifically designed for use in 2-stroke engines. They were not meant to provide any performance advantage. The Y-gap plugs referred to earlier were originated for the Chevrolets 283 cu. in. engines and were L12Y. They present some unique advantages.. koon nine Champion Spark Plug ; Jabsco Pumps ; Mercury Quicksilver Propeller ; NGK Spark Plug ; Quicksilver Marine ; Racor Fuel Filters ; Recmar Marine ; ... Pre-1980 Johnson Outboard Model Numbers. Select a HP rating below to see the list of years and model numbers for pre-1980 motors only. 1.1 HP 1.4 HP 1.5 HP 1.7 HP 2 HP 2.5 HP 2.8 HPJohnson used two different model codes prior to 1979. As a Johnson model MQ14 or MQL14 for a 1968, the MQ designating a 9.5hp. Then in 1969, it changed to a 9R69 or a 9R69L which would have indicated a 9.5 hp, R ope starter, 1969 year of manufacture. Spark Plug Application Chart for Evinrude & Johnson Outboards 1952 thru 2007 * This chart was assembled with the latest available Parts Catalogs, Service ... Chart , Applications , Plugs , Spark , Spark plug application chart , Spark plug chart continuouswave , ContinuouswaveOur spark plugs have been improving engine performance since 1907. Choose your next Champion from the range of plugs that live up to the legacy of this iconic brand. Automotive. View Products. Performance. View Products. powersport. View Products. marine. View Products. LAWN & GARDEN. View Products. Industrial. View Products.Champion spark plugs are original equipment on many outboard & inboard motors and are excellent replacements for everyday engine maintenance. Please view the inboard & …Spark Plug Chart - ContinuousWave www.continuouswave.com. Spark Plug Application Chart for Evinrude & Johnson Outboards 1952 thru 2007 * This chart was assembled … miller air park driving testseaver brown View parts diagrams and shop online for 9R72M : 1972 Outboard 9.5. Offering discount prices on OEM parts for over 50 years. FAST $4.95 shipping available. Spark Plug Application Chart for Evinrude & Johnson Outboards 1952 thru 2007 NOTES: All spark plugs are Champion brand unless otherwise specified. When more than one plug number appears, the first plug listed is the prefered spark plug. On ALL VRO/OMS equipped motors the "QL" supressor plug is recommended. camp illahee packing list Sep 23, 2005 · 9,601 OFFICIAL factory 2007 Johnson-Evinrude SPARK PLUG Chart The only factory recognized spark plug chart is published in the annual dealer's Genuine Parts and Accessories Book. The following link is a .pdf file of the 2007 chart http://www.boatsetup.com/Spark...P.pdf ----- A Technical troubleshooter possessing more tools than talent ! ChampioNman View parts diagrams and shop online for 9R72M : 1972 Outboard 9.5. Offering discount prices on OEM parts for over 50 years. FAST $4.95 shipping available.With a full line of spark plugs, coils, and wire sets, NGK covers 95% of import and domestic vehicles on the market. Sensor Parts. The world’s largest OE oxygen sensor manufacturer now offers a full line of premium technical sensors for the aftermarket, featuring more than 6,800 SKUs. cobray m11 9mm semi automatic 13,262. Jul 2, 2013. #3. Re: Spark Plug Gap question. The original recommended plug gap back when the "Magneto Capacitance Discharge" ignition system came into existence (your ignition system) was .040 and this held true up until the late 1990's when the recommended gap was changed to .030.Genuine Briggs & Stratton Platinum Spark Plug - 5066K. Extended Life Series Platinum Spark Plug. Provides long life, easy starting, increased ignitability and idle stability. For most Briggs and Styratton OHV engines. Extended Life Series Version of 496018S/5092 REPLACES: BRIGGS AND STRATTON 5066, 5066A, 5066B, 5066C, 5066D, 5066E, …I bought the boat in 2013, and bought the 4 spark plugs NGK 5810 B9HS for my Johnson 90 hp from West Marine. Johnson 90 outboard is a 4 cylinders motor, so i... l441 pilltxdmv pharr regional service center Carbs: Holley. Marine Spark Plugs NGK Outboards Evinrude. Please Remember we stock parts and accessories for all makes and models of marine engines and boats. These catalog pages represent just a few of the parts we stock. Use the search field on the top of the page to search by the Part Number with the abbreviation at the bottom of each page.Being able to “read” a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition. In general, a light tan/gray color tells you that the spark plug is operating at optimum temperature and that the engine is in ... Normal. A normal plug appearance in 2-stroke or 4-stroke engines is light tan to gray, and the electrodes will not be burned. Cold Fouling, 4-Stroke. If a spark plug from a 4-stroke engine is covered with a dry, black carbon coating, it may be cold fouled. Causes include the wrong plug (too "cold"), excessive idling or light loads, carburetor ... matt holliday shirtless How do I "read" a spark plug? - NGK Spark Plugs HOW DO I “READ” A SPARK PLUG? Being able to “read” a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition.For many Husqvarna mowers, the ideal spark plug dimensions are 1.25 x 3.5 x 6 inches. Still, it’s worth double-checking if your machine fits this category. To determine the perfect spark plug size for your Husqvarna lawn mower or other outdoor power equipment, consult the Husqvarna spark plug charts below.Normal Spark Plug Color. Combustion deposits are slight. And, are not heavy enough, to cause any detrimental effect on engine performance. Note: The brown to greyish tan color and minimal amount of electrode erosion. Furthermore, indicating the plug is in the correct heat range. And, has been operating in a “healthy” engine.Aug 6, 2007 · 2008 - EVINRUDE E-Tec Water Pressure Chart (All Models) By LIQUID NIRVANA in forum Evinrude/Johnson Motors. Replies: 1. Last Post: 05-08-2008, 04:45 PM. OFFICIAL factory Johnson-Evinrude SPARK PLUG Chart. By SEAHORSE in forum Evinrude/Johnson Motors. Replies: 21. Last Post: 07-08-2006, 05:01 PM. Re spark plug chart of March 25/06 post. How do I "read" a spark plug? - NGK Spark Plugs HOW DO I “READ” A SPARK PLUG? Being able to “read” a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition. sams clu Champion Spark Plugs for Johnson Outboard Motors. Champion spark plugs are original equipment on many outboard and inboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may also find the Champion spark plug code helpful. Year. Model / Engine. NGK is the world’s largest OE supplier and manufacturer of spark plugs. Known for durability and performance, NGK manufactures OE spark plugs for inboard engines, …View parts diagrams and shop online for 9R72M : 1972 Outboard 9.5. Offering discount prices on OEM parts for over 50 years. FAST $4.95 shipping available. we got this icivics answer key Ignition Parts With a full line of spark plugs, coils, and wire sets, NGK covers 95% of import and domestic vehicles on the market. Sensor Parts The world’s largest OE oxygen sensor manufacturer now offers a full line of premium technical sensors for the aftermarket, featuring more than 6,800 SKUs. NGK NTK Technical TrainingJul 2, 2010 · 4,698 Jul 2, 2010 #2 Re: Champion spark plug L77JC4 or L82C for Johnson 9.9? Don't rely on other sparkplug charts, use only the J-E factory recommendations that are kept updated. Here is a link: http://continuouswave.com/whaler/reference/BRP/SparkPlugChart2008.pdf Re: Spark Plug Gap (.030 VS .040) Evinrude They only recommended .040 for a year or two, about 13 years ago. Ever since, it is .030".<br /><br />Back then they found that with a wide spark gap, above .040" as the plug wears, The RF interference would sometimes give a false alarm signal.Evinrude/Johnson DI HP: Year: Plug number: Gap: P/N: 90/115: 1998: 7712: 0.030: 5001111: 150/175: 1997-1998: See Service Bulletin #2360 The year of manufacture for these models of motors are listed in the chart below. Apparently for Johnson, the first four years of production model numbers did not stop at the calendar year end. It also appears that the long-shaft motors were not made until 1957 after OMC was formed a year earlier. onn tv mount instructions Convert one spark plug brand to another. Huge database covering >100 different brands and thousands of spark plugs. Ignition Parts With a full line of spark plugs, coils, and wire sets, NGK covers 95% of import and domestic vehicles on the market. Sensor Parts The world’s largest OE oxygen sensor manufacturer now offers a full line of premium technical sensors for the aftermarket, featuring more than 6,800 SKUs. NGK NTK Technical TrainingSPARK PLUG APPLICATION AND INFORMATION. EVINRUDE/JOHNSON 1952-2010. EVINRUDE/JOHNSON MOTORS SHIP WITH CHAMPION SPARK PLUGS. WE RECOMMEND NGK INSTEAD, AND TRADITIONAL ELECTRODE-GAP RATHER THAN SURFACE-GAP PLUGS WHERE POSSIBLE. WE HAVE FOUND THAT THE SURFACE-GAP PLUGS, WHILE LASTING LONGER, SEEM TO HAVE A SLIGHT PERFORMANCE HIT OVER THE STANDARD ... Indicates the cylinder from which the spark plug came is not using all the fuel supplied to it. Check for faulty or sticking choke, overly rich fuel mixture, ignition problems, leaking fuel injectors, or spark plug heat range is too cold. Appearance - Firing tip is damp with gasoline, usually the odor of fuel is present on the spark plug.Mercury Outboard NGK Spark Plug Guide. NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may …Trace these wires to the engine block, where it’s attached to spark plug sets. Remove each spark plug wire from the spark plugs. You may want to label your spark plug wires to know which one goes where. Next, take your spark plug socket and fit it on the top of the spark plug. Ensure that it’s the right size.The Green Spark Plug Company stock spark plugs from the main suppliers mentioned above as well as spark plugs for veteran, vintage and classic engines. We sell new/unused ‘old stock’ which Tim Green has built up over the last 40 years. This is popular for those hard to find plugs and when sourcing original equipment for vehicles. irony worksheet with answers pdfvumc human resources Most Johnson models had a point gap of .020” and spark plug gap of .032”. The Johnson ID Chart gives the original sparkplug recommendation, you can cross reference this to a modern plug at the Champion website. Timing on all Johnson outboards in this period will be variable since the magneto plate moves to advance and retard the spark as ... The spark must jump a 7/16 gap on the tester. The other option is to use a timing light and watch the flashes of the light. If there are any dead spots switch that coil with a known good firing coil, if the miss moves then that coil is bad, if the miss stays you have another ignition component failing. big bang gizmo answer key pdf Suzuki Outboard NGK Spark Plug Guide. NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may …The spark must jump a 7/16 gap on the tester. The other option is to use a timing light and watch the flashes of the light. If there are any dead spots switch that coil with a known good firing coil, if the miss moves then that coil is bad, if the miss stays you have another ignition component failing. Being able to “read” a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition. In general, a light tan/gray color tells you that the spark plug is operating at optimum temperature and that the engine is in ... silver cloud tracker login Mercury Outboard NGK Spark Plug Guide. NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may …Can someone plz help me find the spark plug gap size for my 1977 70hp Johnson outboard.. I don't have the model # handy but if I need to post it, I can have it posted tonight when I get home..Huge database covering >100 different brands and thousands of spark plugs. Search spark plug cross reference Type in the spark plug model you want replacement for.and material, plugs produced by various manufacturers do not have exactly the same heat range. Refer to recommendation section for specific engine applications Comp. Part# NGK STK # NGK # Comp. Part# NGK STK # NGK # Comp. Part# NGK STK # NGK # 44 3510 B6S 41-963 7740 PTR5C-13 45FFS 6222 BPR5HS 45 3210 B4 41-965 2467 PTR5A-13 …Find spark plugs for your 2-stroke Mercury Mariner outboard using the application chart from the Mercury Quicksilver catalog. Need other parts? If you need parts not listed in the application guide, please see: Standard Plug Manf. Part. roblox the mirror Step One. Turn Finger Tight. A new or reinstalled plug with a new gasket will require ⅜-⅝ turn to effect a gas tight seal depending on head material. Note: If using a torque wrench, please refer to the Torque Recommendations chart below.EVINRUDE/JOHNSON 1952-2010. EVINRUDE/JOHNSON MOTORS SHIP WITH CHAMPION SPARK PLUGS. WE RECOMMEND NGK INSTEAD, AND TRADITIONAL …However, the chart we will show you below will help you determine what type of spark plugs you badly need for your Yamaha outboard. Table of Contents show Yamaha Outboard Spark Plug Chart We will show you the latest data about the Yamaha 2-stroke and 4-stroke spark plugs in the section below.Johnson Outboards by Horsepower 2 HP 3 HP 4 HP 5.5 HP 6 HP 7.5 HP 8 HP 9.9 HP 10 HP 15 HP 18 HP 20 HP 25 HP 28 HP 30 HP 35 HP 40 HP 45 HP 48 HP 50 HP 55 HP ... Spark Spark Plug Stalling Start Starter Starting Fluid Stator Steer Steering Stick Tach Tank Telltale Hole Throttle Tiller Tilt/Trim Timing Tuning Voltage ...