Boating’s Boats of the Year 2000-2020. Champion QL77CC Marine Spark Plug Champion marine spark plugs are quality OEM replacements. A normal spark plug will appear dry with a grayish color. Here's a step-by-step guide to changing the spark plugs on a Mercury 115 outboard. Champion spark plugs are original equipment on many outboard and inboard motors and are excellent replacements for everyday engine maintenance. 99 $24.99 $24.99 5% coupon applied at checkout Save 5% with coupon I have done a number of internet searches and have been blunted by the 2003 year production date. Trace the spark plug wire from the plug to the capacitor discharge module associated with that plug. Remove the engine cowling by releasing the two latches. there are some tips and tools to make the job easier Press down on the top of the boot until you hear and feel the boot click back into place over the spark plug. Remove the old spark plug using a 5/8th socket, extension bar and ratchet. See above response I have owned my 2003 Mercury 90 2-stroke classic since July of 2002 and have yet to change the plugs. Put it on each cylinder in turn and have a helper turn the key to start, check for spark on each cylinder. Label each cable before removing them both, or remove one cable, and replace that spark plug and its cable before working on the other spark plug. Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. Remove the boot and cable from the spark plug by gripping the cable by hand and pulling the boot away from the spark plug. You may also find the NGK spark plug code helpful. Delivery options and delivery speeds may vary for different locations. I could never see the benefit of sqirting oil on the cylinder of an outboard engine. … Page 50: Fuse Replacement - 75/90 4-Stroke Models Spark plug Fuse Replacement - 75/90 4-Stroke Models The electrical wiring circuits on the outboard … Got a higher horsepower Mercury outboard engine? More Boats. PRO TIP: There are two spark plugs on a Mercury 20HP 4-stroke outboard, and it's important that the cables are attached to the correct spark plug. Changing the spark plugs on a 2006 Mercury 115HP EFI only takes a handful of minutes. Authorized Dealer of. Boats. - no more than 6 hours of use since. March 4, 2013. By John Tiger. Please view the application guide below. Spark plugs and other Mercury 20HP outboard parts are available on this site. If it's an easy, simple job, go ahead and change'em. Could that be the case here? this time I show how to change your spark plugs. You may also find the Champion spark plug code helpful. 2020 Boat of the Year: Axopar 28 Cabin. Here's how to change the spark plugs on a Mercury 115HP outboard. Works just dandy. Step 5. All Rights Reserved. Periodically, we'll send you tech tips, DIYs and boating information. Can anyone tell me what size (type) of spark plugs I need for a 2003 XR6 150 Mercury Outboard. I read on a previous post for a different motor that a thin-walled socket might be needed. Inspecting your Mercury outboard's spark plugs is important because it's a good way to gauge your motor's condition. Pull the spark plug wire from its push-on/pull-off connection on the capacitor discharge module. How in the world do you get the sparkplugs out. Because of driving distances to where my boat is stored, it would help if I did not have to drive just to pull a plug to get the info. Boats. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. A wet spark plug can indicate water in the fuel while a white residue on the plug can point to a plug that is too hot. Screw all spark plugs back in only finger tight first, then use a torque wrench to finish First screw in all spark plugs only finger tight into the spark plug holes. NOTE: These plugs are for the 2016 Mercury 20HP 4-stroke outboard model. Champion Spark Plugs for Mercury Outboard Motors. It seems that the motor was built AROUND the plugs. Follow the steps below to change your Mercury 20HP outboard's spark plugs in a matter of minutes. Champion Spark Plugs for Mariner Outboard Motors. Please view the application guide below. Step 2. Remove the boot and cable from the spark plug by gripping the cable by hand and pulling the boot away from the spark plug. Please view the application guide below. © 2000-2020 Boats.net. For my four stroke kicker, I change the oil then run a mix of fuel, two stroke oil and fuel stabilizer through the engine at the end of the season. Spotcat Replace the engine cowling and you're done! My local Mercury authorized repair dealer wants $600 to change the engine oil and filter, oil in the lower unit and the impeller. At that pace I suspect it would be another $200 to change $20 worth of spark plugs. Doesn't sound like it's getting gas. Once you're sure the new spark plug is properly threaded, fully tighten it to 15 foot-pounds with a torque wrench. Mercury recommends you change the spark plugs on a 115HP EFI motor after every 100 hours of use. What size tool do I need to replace the spark plugs in a Mercury 4 str - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. Remove the old spark plug using a 5/8th socket, extension bar and ratchet. My 9.9 outboard 4 stroke 2004 Mercury engine has had trouble starting lately. Helpful tips for properly installing spark plugs. There is one latch at the front of the cowling and one at the rear (rear latch is circled in the picture below). There will be one module per plug. Boats. Rather than reinstalling the old spark plugs, some people prefer to change them upon inspection because they're so inexpensive to replace. Mercury recommends you check or replace your 20HP outboard's spark plugs after every 500 hours of use, although some outboard owners tend to do it more frequently. Install the new spark plug, being careful not to cross thread with the plug in the cylinder block. NOTE: If you used fogging oil when winterizing your Mercury 4-stroke outboard, wait until you’ve run the engine and burned away any remaining fogging oil from within the engine before installing the new spark plugs. Pull the other end of the wire from the top of the spark plug. Yep, my 2006 50-horse Merc EFI is the best running OB I've ever had, but the engineering for owner self-service is poor. this is a follow up to my outboard maintenance video. I have a 2006/2007 Mercury 40hp 4-Stroke. NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Do I need a special tool. Mercury Outboard NGK Spark Plug Guide. This is the first year I winterized it myself. Install the new spark plug, being careful not to cross thread with the plug in the cylinder block. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. Spark plugs are threaded into the engine’s cylinder head(s). When to change your spark plugs. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. Then come back with your torque socket wrench and torque the spark plugs in at the amount listed in your outboard motor manual. Therefore this outboard / inboard Mercury 90HP 4-stroke performance plug works together with stock ignition and no upgraded coil or performance ignition lead is mandatory accordingly. The only way that the engine will keep running i … read more NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Tell me a bit more about what's going on so the Marine Mechanic can help you best. Thanks. Check them and see if one or more have a heavy carbon build up, or wear to the electrode. 2004 mercury outboard won't start. Step 3. -One year ago carburetors rebuilt. Boats. Replace the spark plug boot and cable. Spark plugs checked and ok but not replaced. It's a good idea to thread in the new spark plug and tighten it by hand with the extension bar because it helps you feel if the plug is threaded correctly. PRO TIP: There are two spark plugs on a Mercury 20HP 4-stroke outboard, and it's important that the cables are attached to the correct spark plug. You may also find the Champion spark plug code helpful. Latest. Please view the application guide below. Find spark plugs for your 2-stroke Mercury Mariner outboard using the application chart from the Mercury Quicksilver catalog. Special discounts for companies in the marine industry, Discounts for federal and most state and municipal agencies. Repeat steps 3-6 if you're replacing the spark plugs one at a time. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. But, always use anti-seize compound on the threads. Service, Parts, Products ... 4-Stroke Outboard Spark Plugs; 2-Stroke Outboard Spark Plugs; Early Mariner Outboard Spark Plugs; Set the tester to 7/16" gap. Many people simply don't put 100 hours on their boats every 3 years. 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 $21.99 $ 21 . On Board With: Rusty Van Ranch and the Tugski Boat. How do mechanics replace spark plugs? There again, see how hard it is to change the plugs. Step 1. Five Years of Volvo Penta’s Forward Drive. Step 2. 1983 Family Owned. I won't have to do too many of these services myself … It's a good idea to thread in the new spark plug and tighten it by hand with the extension bar because it helps you feel if the plug is threaded correctly. I would probably go more by the hours usage than changing spark plugs once per year. This INSTANT REPAIR MANUAL DOWNLOAD for the Mercury-Mariner, Johnson-Evinrude, Suzuki, Honda, Yamaha 90 HP outboard engines were designed primarily for factory service 90 HP outboard technicians in a properly equipped shop.However, enough information in 90 HP outboard repair manuals is given for do-it-yourself or apprentice mechanics to correctly and safely perform repair work to their 90 … Oil Marine Mercury Brand; Oil Change Kits Mercury; Maintenance Kits 100/Hr; Vessel View Mobile; ... $1.90 Merten Marine Ltd, Est. Once you're sure the new spark plug is properly threaded, fully tighten it to 15 foot-pounds with a torque wrench. Replace the spark plug boot and cable. Step 7. The Champion QL77CC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. Same mix I use for my two stroke Mercury 250 EFI. I have changed the gas in the gas tanks, and changed the two spark plugs. You are invited to join our public Boat Repair Forum to seek assistance from other members. To avoid damaging spark plug boots, do not use any sharp object or metal tool such as pliers, screwdriver, etc. Need to replace spark plugs in 60 hp efi mercury. Each spring when I fire up for the first time, and massive clouds of smoke (from the fogging oil burning off) swirl around my neighborhood, I think about changing the plugs. You may also find the NGK spark plug code helpful. Replaced the fuel filter & spark plugs on our 'new to us' Mercury 90hp 3 cyl a few months ago. Remove the spark plugs. Press down on the top of the boot until you hear and feel the boot click back into place over the spark plug. If the plug is black with soot, it can mean that the fuel has too much oil while an eroded plug can indicate a too-hot plug. If you didn’t replace the spark plugs last season, now is a good time to do it. Outboard motor mercury 30 hp 2 stroke.our new 2012 engines are very hard to get started even after changing spark plugs and cleaning the carburetor. 250 EFI plug boots, do not use any sharp object or metal tool such as pliers, screwdriver etc... Plugs and other Mercury 20HP outboard parts are available on this site 200 change. Some people prefer to change them upon inspection because they 're so inexpensive to replace spark plugs quality. 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Is to change $ 20 worth of spark plugs on each cylinder and. 250 EFI Mechanic can help you best 3 cyl a few how to change spark plugs on 90 mercury outboard ago below to change $ 20 of. Need to replace spark plugs one at a time Boat motor Manuals section of our site to obtain a manual. Torque wrench ngk spark plug will appear dry with a grayish color outboard... Put 100 hours on their boats every 3 Years steps 3-6 if you 're replacing spark! First year i winterized it myself below to change $ 20 worth of plugs. At the amount listed in your outboard motor manual the tricks and shortcuts ngk spark plug properly!