How Often To Change Outboard Thermostat

There is an official tester and if you do not have one you can use a pan of slowly heating water with a suitable thermometer immersed to run your own test. It's much better to replace an old thermostat that still works, than wait for an old thermostat to fail and cause the engine to overheat, causing even more damage. Wiki User 05/23/2013. I’ll report about that thermostat area and how we did the final cleaning in another post. Likewise, if the thermostat is “stuck” open, the flow of coolant is constant, it results in the car’s engine temperature never reaching an optimum level of heat, producing performance problems and accelerating the wear-down of parts. I wasnt able to track the final message, but this weekend, I realized that my outboard (mercury mariner 9. This Factory Service Repair Manual offers all the service and repair information about Mercury Mariner 4-90 HP 4-Stroke Outboards. Automobiles, trucks, and high-tech snowmachines are also water-cooled. Seven Steps to Keep Your Outboard Kicking. Tilt the outboard motor up to the highest position and place the shift lever in the "R" (reverse) position. sdisturber wrote:next time you start the motor pull the cowling off. This is often the first place to check when the motor is running hot, and if there has been a major overheating event the thermostat should be changed out. One hundred years of life on the water…and counting. A little TLC and preventive boat motor maintenance will help with safe boating and keep your motor running well for years to come. Tighten the bolts until snug. The thermostat is a serviceable item that often gets over looked. thermostat problem on 4 stroke Boat not a bad idea to change out a thermostat more often than recommended, but I doubt that is what caused the problem, try a. • Anode: Check and replace if needed. This is done in between Major services and is designed as part of a well maintained and service scheduled outboard. I have outboards from 15 to 115 H. can anyone help. If it's hot, that's often an indication of a blockage somewhere in the cooling system (and the flow probably won't be as strong as it should, either). I like to change about every 3,000 miles. Lower unit oil changes are an important part of maintaining an outboard motor. If you notice your furnace or air conditioner never seem to turn off, you may need to replace your thermostat. 11-31 The follow maintenance schedule has been compiled from current four-stroke Owner's Manuals. Thank you for your business. Yamaha outboard motors are equipped with a thermostat that limits the quantity of cooling water allowed into the motor until the motor reaches its normal operating temperature. At this point, I know it's either the temp sensor or the thermostat. Open the throttle valve manually and check the resistance changes between the terminal 1 and 2. Most marine engines start out as a non-marine engine and were designed to have a clean non-corrosive antifreeze coolant circulating between the engine and a "radiator". The F150 satisfies the needs of anglers looking for quiet, fuel-efficient power for mid-sized boats. If your vehicle overheats often and constantly loses coolant, the problem may be leaks in your cooling system. Servicing the lower unit is a simple job that you can easily do yourself. We had it cranking and it wasn’t firing, so I slipped on a couple of those glow caps and put the spark caps back on and neither glow cap was sparking…. I DO however, get a gasoline smell in the oil. Drum/Tank Method When you have a small HP outboard (under 25hp) the lower unit may be too small for aftermarket flushing devices to fit properly. DISASSEMBLY 1. This certification is contingent on certain adjustments being set to factory standards. If you replace one plug in a motor, replace them all. I went to test the oil level in my Yamaha Outboard and saw the oil was milkshake color. We feel our oil is the best available on the market today. 15440-93J00 Suzuki Outboard High Pressure Fuel Filter 17670-90J00 Suzuki Outboard Thermostat. A thermostat fails by getting stuck. However, you also need to consider how often you use your boat. His thought was that you could recirculate the stuff through the engine for a longer period of time vs running it through a hose attachment, into the motor and then out and onto the ground. A thermostat is a tool that regulates heating and cooling, whether it be in your home or in your car. Additionally, the chart includes complete 20 and 100-hour service kits, oil change kits, and outboard covers specifically designed for your Yamaha F150. Mercury - Mariner Thermostats and Gaskets Thermostat, Mercury / Mariner, 120° F. It's only an intermittent problem starts about 20mins after driving an I can't find the thermostat to check in. This is an indication of. Did you find it?. My outboard overheated while out on the water this weekend. Also check the thermostat for the traditional failure patterns mentioned previously and replace where necessary. We had it cranking and it wasn’t firing, so I slipped on a couple of those glow caps and put the spark caps back on and neither glow cap was sparking…. Blown Head Gasket Symptoms I usually get my oil changed at Jiffy Lube because they are convenient and I can’t crawl under my car and change my oil like I used to. I went to test the oil level in my Yamaha Outboard and saw the oil was milkshake color. The cooling system contains wearable parts: the water pump, water pump housing, and thermostat, to name a few. The water coming out of the tell-tale is usually warm. Other Tigé V-drive models may be similar. We wash and wax our boats and outboards, change the oil and oil filter regularly, and replace the fuel filters, but what about your outboard's cooling system. ), where the thermostat seats. Change engine oil and replace the oil filter. Mercury / Mariner outboard motor section Outboardparts. How often should I replace my water pump? top. The choice is yours, it's your money and your engine. I may need to change the thermostat for my Suzuki DF 50 outboard (2004). The information provided on these pages is correct to the best of my knowledge, however the MasterTech makes no warranty, express or implied, regarding the use of, results of, or liability created from, application of this data. I dont take a chance and bring mine into the dealer once a year and have the power head tuned up. Yup thermostat is usually there for a very good reason and often removing them causes other issues. Outboard Engine Parts. 8 2 stroke) was not discharging water out of the pee hole after a 6 month haul out. Check the pump and replace the impeller if it is worn or over two years old. 4-liter muscle. If you are going to tackle changing the impeller you might want to clean those items at the same time. It fulfilled my expectations in both performance and appearance. Outboard water pumps are simple designs. I have had outboard motors on the sound for twenty years and disagree about changing the impeller that often. The thermostat therefore takes over control when the blower is turned "ON" and "OFF". Mercury - Mariner Thermostats and Gaskets Thermostat, Mercury / Mariner, 120° F. If it is from 15" to 17" long you'll need to get a Tohatsu outboard with a "short" shaft. The thermostat is one of the least expensive parts to replace and often can be the cause of overheating issues or the original cause of the leak, so it makes sense replacing it when the radiator is replaced to ensure it doesn’t cause the new radiator to develop a leak. The thermostat is a serviceable item that often gets over looked. What type of oil should I use in my Suzuki outboard? A. ) for XL models, and 88. Check that yours isn’t running hot, flush the system and replace the antifreeze according to the specifications in your owner’s manual. Operator and franchisor of Quick-lube chain, Valvoline Instant Oil Change. Just let the outboard run at idle for 10-15 minutes, shut off the outboard, stow the hose and flush muffs, and you’re done. Outboard water pumps are simple designs. Water Pump Replacement for BF40D•BF50D Outboard Motors Prior to removing the gear case, make sure the outboard motor is secure on an engine stand or transom of a boat that is out of the water. I'm guessing that the u-joints or bellows are leaking and letting water in. Your outboard motor might also be overheating because of a faulty water pump, clogged thermostat or water line or a problem with the exhaust system. Can you help me troubleshoot my Dakota that overheats after I have replaced the belts, thermostat and water pump, the ac only blows hot air? How do you install an outboard water pump? How do you replace a water pump in a Dodge Intrepid? How do you replace the water pump in an Infinti i30? How many miles is a Dodge 2. Don't be put off by the fact that you have to drop the lower unit. This is performance that will rocket your rig out of the hole and to the next hot spot in a blur. The below vid shows a Tohatsu 8 Hp 2-stroke, but the order of work for the impeller replacement is the same as on your 9. The focus of this article is to identify the reasons why a 4. Sometimes we encounter our outboards not running properly. Stuck ThrottleThe throttle shifts the Mariner outboard engine from one. This is an indication of. So thinking the impeller is going bad or the thermostat is sticking shut, I had a non-yammie facility replace both. Steam means the engine is hot. Outboard Jet Maintenance For those of you who run a outboard jet on your boat, there is some required maintenance to keep it functioning properly, and to assure that you can remove, adjust or replace needed parts if required. INSTANTLY DOWNLOAD outboard repair manuals straight to your computer in seconds. Where is the thermostat located in the suzuki swift 2008 engine? Car is overheating an radiator has been replaced. To determine when service is due,. Whether it's a Johnson 9. Email Newsletter. the bolts are prone for breakage so go easy. We will truly miss him. How to Change a Propeller on a Johnson 70-Horse Outboard When you need or want to change the propeller on a 70-horse Johnson outboard motor, perhaps because your boating needs have changed, you'll find the task no more onerous than removing the propeller for winter storage. She still runs like a top. Yamaha F150 - The World's First 150HP Four-Stroke Outboard Yamaha F150 - The World's First 150HP Four-Stroke Outboard Yamaha Marine announces its new F150 four-stroke outboard for 2004. Q: Can I change the water pump on my outboard myself? How long should it take? What would it cost if I had my dealer replace it?. This is the temperature the thermostat will start to open, give or take 3 degrees; The thermostat fully open about 15-20 degrees above its rated temperature; Many thermostats have a "jiggle pin" or "check valve" that allows trapped air in the cooling system to pass through the thermostat and be released from the system. Experience the modern-family SUV in the 2020 Honda Pilot. Bluemule, up till now I have done all my own outboard maintenance including full rebuilds. To change the thermostat on a 2002 Mercury villager, pull the hose away. My outboard overheated while out on the water this weekend. Whether it's a major service, a winterisation or even a pre-season inspection for your outboard or inboard engines. Sound to me like you need to replace the water pump impeller. Thermostats do wear out, corrode, and may sustain damage by an engine overheat condition. A new thermostat runs about $25. Quicksilver Branded WATER PUMP UPPER REPAIR KIT 46 - 96148Q 8 Includes plastic pump housing assembly, impeller, face plate, gaskets, drive key or. At the heart of a thermostat is the thermal element, technically called a vernatherm. If your vehicle overheats in normal weather and traffic, you may need to add liquid to the system, replace the thermostat, adjust or replace the accessory belt, or check the water pump. Exactly why I used the HD bypass which only bypasses oil at temp. If you have or can get an IR non-contact thermometer, Northern Tool had some for around $15, that will tell you what the water is doing. The second my boat hits the water I fire it up and it continues to warm up while I Park the trailer and do my final gear loadout. DOWNLOAD Mercury and Mariner outboard online service repair manual pdf straight to your computer in just seconds, fix your problems now!. real frustrating. The thermostat prevents the water from starting to cool the motor too early in that process, to increase engine performance and reduce emissions. Outboard Motors. after head is off carefully remove thermostat cover. 9 cm (35 in. We know how important it is to find a Strafford car service you can rely on, so your satisfaction is our top priority each and every day. other seals should be reusable. The more expensive thermostats 1 can often break the home into different zones to automatically change the heat at different levels throughout the house. The invention is a device for flushing or winterizing an inboard/outboard engine cooling system having an open basin for submerging cooling system intake portals in liquid. The bypass valve acts as a pressure. 9D owner's manual online. Once I looked into what ethanol gas does and how it can damage engines and fuel systems it became clear to me what was happening. Peter Gelzinis Merritt Island, FL 2004 Mercury 25 hp Long Shaft Fish Camp Outboard. Make sure you replace the neoprene gaskets before putting the boat back in service. As a motor mechanic and heavy diesel mechanic I actually enjoy working on outboards. The gears of outboard motors can be shifted manually or automatically. Mercury Marine. Outboard Jet Maintenance For those of you who run a outboard jet on your boat, there is some required maintenance to keep it functioning properly, and to assure that you can remove, adjust or replace needed parts if required. I removed the thermostat and cleaned it (had a small pebble and grass in it). It gives me peace of mind knowing that all salt is out of the motor although I believe the Johnsons are fairly resistant to corrosion. I have been reading that it may be time to change the impeller, water pump and thermostat and wondering if anyone has done this before. Oil can be changed on a normal time schedule from this point on. This includes Oil Change Fluids and Filter; Lower Unit Gear case lube Change, Impeller, Anodes (Zincs, Trim Tabs, Brackets), Fuel Filter, and Spark Plugs. People often trash good Painless 30113 Thermostat that just needs a little sprucing up. Marine engines can often be used for extended periods at wide open throttle (up to 6000rpm on some models) in harsh salt water and sun, then sit in storage over winter for up to 6 or 7 months without any use. I have to 20 hp outboard motors that run great without their covers but then stall out once covers are installed. I was surprised when it turned out to be the thermostat but stoked to get it running good again. A new thermostat runs about $25. In the case of keeping your engine cool, the water pump is an effective and integral part of the process. net we stock thermostats and thousands of other parts fro Yamaha 90 HP outboard motors. 0 on the leg pump at low revs. The number will start with a 0 or 1, then a letter (eg. The choice is yours, it's your money and your engine. Which can be a. A factory certified outboard mechanic told me to use a salt eliminating product every 6 months. Shut down and restart. Thermostat on a 1999 50 HP Johnson is easily replaced. " Engine runs fine, but I was wondering, should I change them or not?. We offer Hi-Tech automotive Oil Stop-Leaks, Transmission Sealers and Oil Additives for a wide variety of applications. Valvoline Inc. The thermostat is not often the cause of overheating, but it may be damaged due to a high heat. 2 cm (30 in. The replacement seat was a very hard rubber/plastic that was driven into the head without the SS retainer. No big deal. At this point, I know it's either the temp sensor or the thermostat. Dropping the gearcase to access the water pump requires removal of the mounting bolts. On the Mercury 40-60HP 2-stroke outboards the thermostat is this thing in the top right of the port side of the outboard. The water is brought into the outboard through the use of an impeller that draws water into the water intake opening on the midsection of the outboard. There is an official tester and if you do not have one you can use a pan of slowly heating water with a suitable thermometer immersed to run your own test. Replace with the oil recommended in the manual, usually either a standard engine oil or automatic transmission fluid, and check the level with the dipstick. I don't run in mud or heavy silt, so a 5-year-old impeller on my outboards shows very little wear. How this vital engine component works to protect your boat. It is the lightest outboard in class at just 455 lbs. 11-31 The follow maintenance schedule has been compiled from current four-stroke Owner's Manuals. Its been fine for 7 or 8 years, maybe 40,000 miles, and i haven't changed anything but shocks since then. Yes, the turkey is carved and eaten and those awesome decorations are beginning to crop up around the neighborhood, as well as in your very own living room. We wash and wax our boats and outboards, change the oil and oil filter regularly, and replace the fuel filters, but what about your outboard's cooling system. They can last longer but they corrode. com/uncategorized/sailing-for-beginners/#respond Thu, 06 Dec 2018 15:30:17. The cost to replace the timing belt and water pump is mostly labor; the parts are cheap. On my Yamaha 115 I always get the stainless kit the impeller itself is one serious hunk of rubber kinda like a dogs Kong toy. Find the Outboard Water Pump Kit - 5001594 at the Evinrude online store. • Anode: Check and replace if needed. Two Stroke Replacement Schedule. any help would be greatly appreciated. Download a 55HP Yamaha, Suzuki, Evinrude, Mariner, Johnson, Mercury outboard repair manual in seconds. How to tell if the water pump on your outboard is working right? I have a 1977 evinrude 85 hp outboard motor on my boat. Needed this version because it included the metal cup. I ran for about a half a minute hoping it would stop. Replace filter if required. They were all good motors but the 1974-76 did not have elctronic ignition systems. Automobiles, trucks, and high-tech snowmachines are also water-cooled. Mercury Authorised Dealers have the expertise and training to handle all of your engine maintenance service and needs. Maintaining Johnson/ Evinrude 9. It's much better to replace an old thermostat that still works, than wait for an old thermostat to fail and cause the engine to overheat, causing even more damage. Check water pump operation. Learn more *Testing conducted in an independent lab using AMSOIL Signature Series 5W-30 Synthetic Motor Oil and a leading synthetic-blend 5W-30 motor oil in Ford F-150 trucks with 3. Lightly oil the retaining bolts with clean two-stroke oil before installing and tightening them. oil 4 coolant,,overheating? on a little aluminum engine once is enough to ruin it. Whether it's a Johnson 9. This service covers the most crucial items and includes: Replace the following. Consider changing the thermostat every time you change the impeller, especially if you have a two-stroke. There is no single best method for flushing an outboard motor. The only way to diagnose a failed thermostat is to remove it and place it on a pan of water then heat it to 170˚. The cooling system contains wearable parts: the water pump, water pump housing, and thermostat, to name a few. Research 2006 Yamaha 4-Stroke Series F25ESH Outboard Motors, prices & specs at NADAguides Change Manufacturer What You Need, How to Do It, How Often, and What. Yup thermostat is usually there for a very good reason and often removing them causes other issues. lt is to your. How often should I change my oil in my Suzuki outboard? A. The piston is forced down the cylinder by the expansion of combustion gases to turn the crankshaft. Thermostat, Housing & Cover for Mercruiser Sterndrives Thermostats regulate the cooling system of an engine, esuring proper operating temperatures. Last week, someone mentioned that their outboard was not discharching water out of the pee hole. Bluemule, up till now I have done all my own outboard maintenance including full rebuilds. I am a stickler for maintenance, and after having Johnson, Evenrude, Mercury, Mariner, and Yamaha outboards, I would not bother with the water pump more than every 3 years unless you use the hell out of it, or operate in sandy, muddy water, which tends to where on the impeller. Fuel contamination can be prevented by installing a Racor filter and checking it regularly. I would replace it prior to use. com/uncategorized/sailing-for-beginners/ https://www. Its been fine for 7 or 8 years, maybe 40,000 miles, and i haven't changed anything but shocks since then. Dual Automatic Climate Control System Buick Enclave / Buick Enclave Owners Manual / Climate Controls / Climate Control Systems / Dual Automatic Climate Control System The heating, cooling, and ventilation in the vehicle can be controlled with this system. Back to the procedure for servicing the water pump. Check that yours isn’t running hot, flush the system and replace the antifreeze according to the specifications in your owner’s manual. We comply with the State of California's Proposition 65 Proposition 65 provides California consumers with information prior to purchase regarding their potential exposure to certain chemicals. The pink stuff is only for the oil cooler, powersteering cooler, header manifolds and seawater pumps. If you have a Direct Drive model you may pick up some useful tips, but the procedure for removing the pump will not apply. S E E D E D C O N T E N T. non-invasively by pointing it at the outside of the thermostat housing Removing the thermostat is achieved by removing the two 10mm bolts holding down the thermostat housing. Here are some tips to get you through it. All outboard motors have an internal thermostat that opens usually at least a 140* AS that must be The Sweet Spot in the motor to prevent premature internal wear. My question is how much should it cost for the following:-haul out-drive service and replace bellows-thorough wash, buff and wax of boat. we share a common name -Craig. Lightly oil the retaining bolts with clean two-stroke oil before installing and tightening them. This is a stuck thermostat. sdisturber wrote:next time you start the motor pull the cowling off. Back to the procedure for servicing the water pump. I am a stickler for maintenance, and after having Johnson, Evenrude, Mercury, Mariner, and Yamaha outboards, I would not bother with the water pump more than every 3 years unless you use the hell out of it, or operate in sandy, muddy water, which tends to where on the impeller. [Seeks advice on how to change the thermostat on a 1989 Evinrude 90-HP V4 outboard. In some cases, the original head gasket for the car can just be very badly designed and the poor design can cause a blown head gasket over a period of time. They should be a light brownish color and have relatively sharp edges. Posted on November 7, 2012 January 12, 2014 by Tor. Cracked plug wire insulation can short out, and caps that have damp or corroded connectors or that donʼt fit snugly can. The motor is whizzing fine. Outboards sold by Mercury Marine in the United States are certified to the United States Environmental Protection Agency as conforming to the requirements of the regulations for the control of air pollution from new outboard motors. Find the user manual you need for your home appliance products and more at ManualsOnline. I have a 1993 Yamaha 40hp outboard motor with a jet unit on it that just started dieing on me. INSTANTLY DOWNLOAD outboard repair manuals straight to your computer in seconds. On my Yamaha 115 I always get the stainless kit the impeller itself is one serious hunk of rubber kinda like a dogs Kong toy. Rubber pump impellers wear out, especially in water with a lot of sand or grit, so we change ours every 100 hours. If your home does not feel comfortable, the thermostat may be out of adjustment. The pink stuff is only for the oil cooler, powersteering cooler, header manifolds and seawater pumps. Been there as a teenager. The piston is connected to the big end bearing of the crankshaft by means of a connecting rod. Both the thermostat and those passages can be accessed via a cover on the same side of the engine as the throttle. They were all good motors but the 1974-76 did not have elctronic ignition systems. The water coming out of the tell-tale is usually warm. Using a product often referred to as a stabilizer fin is a modification of the gearcase that may change the manner in which the boat operates on the water. I realized the fans aren't turning on. The water comes into the outboard's engine through the lower unit, which is below water level as the boat is moving. Find outboard engine specs, special financing, accessories, and Honda Outboard Motor dealers near you. Replace the thermostat gasket and reinstall the housing. It very light. Fuel contamination can be prevented by installing a Racor filter and checking it regularly. How to Change the Thermostat on an Outboard Engine - Duration: 2:14. Which Coolant is Right For My Subaru? By Justin Stobb on May 3, 2011 in All Wheel Drive Auto News , Featured , Subaru Maintenance , Subaru Repair Seattle This comes up a lot it seems, we are often directed to a forum link or told that a Subaru dealer is stating something different than what is in the owner’s manual. I tried running a wire down the tube to clean it out but still no water. 8 Hp 4-stroke. Ie - it short circuits a path that could/should be closed when the thermostat opens which makes the water not flow where it should. Now how often do you need to service your Audi, totally depends on your driving style and the type of service schedul. Waiting until one fails means having to work to find all the pieces, typically lodged in the seawater inlet of gas or diesel heat exchangers or in the thermostat housing of open-cooled gas engines. Upon starting it in the water tank in the yard this spring it seemed to be running just fine. The choice is yours, it's your money and your engine. 8 2 stroke) was not discharging water out of the pee hole after a 6 month haul out. Impellers are supposed to be replaced every 200 hours or 2 years, whichever occurs first. Outboard Thermostat If your particular outboard motor has a thermostat, you can easily replace or service the area but you will need replacement gasket for the exhaust covers, if you have an engine similar to a Mercury outboard 650 or 700. Please add me to your list of favorite sellers and visit often. If the thermostat is the problem then it should be a quick and cheap fix to replace it. Using a product often referred to as a stabilizer fin is a modification of the gearcase that may change the manner in which the boat operates on the water. Changing Oil for Your Lower Unit in a Mercury Outboard. com: - How to Change the Engine Oil on a 4-Stroke Outboard - How to Change the Thermostat on an Outboard Engine - 100 Hour Two-Stroke Outboard Engine Service - How to Winterize a Four-Stroke Outboard - Solve Your Outboard Motor Problems: Starting, Fuel, Shear-Pins - How To. An outboard marine engine repair manual is a book of instructions, or handbook, for learning how to maintain, service and overhaul the 55 HP outboard motor to factory specifications. Check out our top 5 outboard maintenance reminders to help keep your engine in tip-top condition. Work slowly, stopping every so often, inspecting your progress. Compare old to new before you install. Please review our Warranty, Returns & Refunds policies before you place an order. This will assure that the water pump is completely submerged. 4-liter muscle. The other engine has now been in service for ten years and 510 hr. When I got my year 2000 90 HP Johnson outboard last fall, a surveyor told me to change the thermostats as part of routine maintenance (probably never had been done). An drum and brake shoes and adjusters. Maintaining Johnson/ Evinrude 9. How this vital engine component works to protect your boat. Inspect thermostat visually for corrosion, broken spring, and to determine that the valve is completely closed at room temperature. Other Tigé V-drive models may be similar. Replacing a Water Pump or Impeller on Yamaha T8 8HP Outboard Motor Peculiarity of This Motor/Water Pump; In owning this motor for 8 years I have found that IF you let it set for an extended period of time (possibly 6 months) that when you start it back up using muffs, that your water pump may not pump water out the tell-tale hole. If questionable, inspect thermostat as out-. Often overlooked, the thermostat, on the outside, didn't look like a problem, until I knew it had never been removed in previous years. My 40 hp honda outboard isn't putting out any water from the teltale. 3 V6 Alpha one. I live on the Puget sound and have a mooring buoy. Like Sal said you. If your vehicle overheats in normal weather and traffic, you may need to add liquid to the system, replace the thermostat, adjust or replace the accessory belt, or check the water pump. The thermostat is #41. Back to the procedure for servicing the water pump. How this vital engine component works to protect your boat. Find the Outboard Water Pump Kit - 5001594 at the Evinrude online store. A little research will establish if your vehicle is prone to poor designs. We offer Hi-Tech automotive Oil Stop-Leaks, Transmission Sealers and Oil Additives for a wide variety of applications. Whether it's a major service, a winterisation or even a pre-season inspection for your outboard or inboard engines. FOURSTROKE OUTBOARD OIL FILTER 35-8M0065103 FourStroke Outboard replaceable screw‑on type canister filters. All outboard motors have an internal thermostat that opens usually at least a 140* AS that must be The Sweet Spot in the motor to prevent premature internal wear. Well, if it stops working and is stuck open, cold oil flows, and if it sticks closed it doesn't circulate either way you replace the bypass. Outboard Jet Maintenance For those of you who run a outboard jet on your boat, there is some required maintenance to keep it functioning properly, and to assure that you can remove, adjust or replace needed parts if required. Why Does My Outboard Motor Have No Spark So I have a 35hp outboard, and neither plug is sparking…it is electric start. Email Newsletter. 3 V6 Alpha one. spark plugs. and still working fine. Install two bolts through the upper set of holes and two bolts through the lower set of holes. Removing the T cover by unfastening the two bolts. Otherwise the outboard mo- tor could fall back down suddenly if oil in the power trim and tilt unit loses pressure. Frequent service often pays off through increased life and performance of your Yamaha Outboard Motor. We offer the most-complete line of outboard power, for fishing boats and speed boats, for pontoons and tenders, for work and for play. The thermal relay sensor is designed to operate the cooling fan when the coolant temperature reaches a certain temperature. Buy Evinrude's Outboard Motor Thermostat. If you have a Direct Drive model you may pick up some useful tips, but the procedure for removing the pump will not apply. You can often get somePainless 30113 ThermostatPainless 30113 Thermostat of Painless 30113 Thermostat by investing a small amount of your time carrying out refurbishment work.