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Blog
Welcome! Here is our home of blog posts of support, tips and advice on all things outboard, boat, trailer and marine related. Happy reading...
How To Replace Gear Oil
Author: Stuart Buckingham Date Posted: 30 July 2020
Whether your outboard is 2 stroke or 4 stroke it will have a gearbox. The gearbox is the area of your outboard that the propeller is fitted to and, as the name suggests, a gearbox is where your outboards forward, neutral and reverse gears and bearings are located. Keeping these gears and bearings in tip-top condition requires lubrication. Marine gear oil is what is used and should be replaced every season. It is a pretty simple task, provided you have the right tools and take the correct steps to do the job... continue reading
How To Check An Outboard Thermostat
Author: Stuart Buckingham Date Posted: 27 June 2019
If I were to ask you what the five most important things to check when servicing an outboard were most would rate a thermostat pretty low and some, in fact, wouldn’t even rate it. We are trained to think that the heart of the cooling system is the water pump and it should be checked and changed annually, and this is correct, but if the water pump is the heart of the cooling system then the thermostat should be considered the brain!... continue reading
How To Store Fuel In Your Boat
Author: Stuart Buckingham Date Posted: 7 March 2019
You’re heading home from the boat ramp, it’s been your last outing for the season and soon the boat will be flushed, greased and stored away ready for the next boating season. But as you’re going through the storage process in your head you pass a gas station and the question you ask yourself every year jumps to mind, “Should I be filling the fuel tank up? Or should I be leaving it almost empty?” What to do? This question has appeared on Forums, Facebook Groups and has been asked of Outboard Technicians since Noah strapped a two stroke on the Ark... continue reading
How A Water Separator Fuel Filter Works
Author: Stuart Buckingham Date Posted: 21 November 2018
Bad fuel can quickly cause problems for outboard engines by clogging injectors, gumming up carburettor jets or causing all sorts of running problems that can result in a shortened outboard life and hefty repair bills. Water and impurities can enter a boats fuel tank in a number of ways, such as... continue reading
Getting Your Boat Spring/Summer Ready
Author: Stuart Buckingham Date Posted: 28 September 2018
Spring is in the air! Yep, it's that time of year that many have been waiting for... boating season. Soon the snapper will be plentiful and the warmer weather will be inspiring many to hit the water. If you've laid your boat up for the Winter now is the time you should be checking things over and ensuring that your boat, trailer and outboard are seaworthy... continue reading
Boat Show Tips & Tricks
Author: Melissa Buckingham Date Posted: 28 June 2018
Well, it's that time of year again... boat show season. Some have already kicked off and some are yet to come but anyone who is attending a boat show needs to be well equipped. So, here are our tips and tricks for surviving a boat show... continue reading
Why You need to change your head gasket
Author: Stuart Buckingham Date Posted: 30 May 2018
The term 'blow a gasket' is certainly a widely used term in the Aussie vocabulary and almost as Australian as 'she'll be right' or 'stone the crows' but unfortunately, for those of us in the boating scene, unless you're hearing about a mates reaction to losing a big fish it probably means you're outboard is in strife and needs a new head gasket and possibly more... continue reading
What To Look For When Inspecting Your Water Pump
Author: Stuart Buckingham Date Posted: 27 April 2018
Your outboards water pump is its main cooling mechanism, without it your engine would overheat in seconds leaving you bobbing around the ocean like a randomly positioned FAD. If you're someone who doesn't mind getting out the paddles on the odd occasion and getting a bit of exercise then perhaps this blog isn't for you but, if the idea of a 3km paddle back to the boat ramp isn't your thing, then please read on and see why inspecting your water pump is so important... continue reading
6 Workshop Tools You must have
Author: Stuart Buckingham Date Posted: 28 March 2018
They say a bad tradesman always blames his tools however, you can only blame yourself if you don't have the right tools! Working on outboards can be challenging at the best of times and these challenges can be amplified if you don't have the right tools for the job. Below are a few of the tools I believe are a must have, for any marine technician working on customer outboards or the DIY'er working on their own or their mate's outboards... continue reading
Tips for Buying a used outboard
Author: Stuart Buckingham Date Posted: 28 February 2018
One of the biggest misconceptions that people have is that an outboard with good compression on the block is in excellent order. This is only a partial truth. An outboard does not only consist of the engine block, a damaged gearbox or trim and tilt unit can be an expensive exercise to repair or replace and can quite easily cost you thousands of dollars... continue reading
What Sand and weed can do to your outboard
Author: Stuart Buckingham Date Posted: 30 January 2018
As we all know, our rivers, bays, seas and oceans all consist of various environments. Environments can be anything from sand, rock, weed, gravel, mud and so on. When operating our vessels, large or small, in these environments we need to be mindful of any risks we may be exposing our outboards to and how to avoid potential damage... continue reading
Genuine Vs. Aftermarket
Author: Stuart Buckingham Date Posted: 22 November 2017
So, this is something I have been a bit reluctant to write about, being that I have a biased view and vested interest in aftermarket parts. However, it's something I get asked about all day every day by both trade and retail customers so I will take my Outboard Spares hat off and be Switzerland for the integrity of this blog... continue reading
Zinc vs. Aluminium Anodes
Author: Stuart Buckingham Date Posted: 20 October 2017
All anodes, depending on the outboard make, can be different shapes and sizes and made of different materials depending on the environment they’re being used in. Below I'll be covering the two main types of anodes, Zinc and Aluminium, and the environments that suit them best... continue reading
Understanding Propellers
Author: Stuart Buckingham Date Posted: 18 September 2017
Propellers, every outboard has one. Whether it's stainless steel, aluminium or plastic they all have the same task, which is to push your boat forward or backward. But, the wrong propeller on your outboard can cause under performance in the way of a lack of top-end speed, hole shot or could possibly cause excessive load on your outboard resulting in powerhead failure... continue reading
What Needs replacing on your outboard
Author: Stuart Buckingham Date Posted: 17 August 2017
It's about this time of year, when Spring is just around the corner and the chill of Winter is subsiding, that most of us decide it's time to give our outboards a once over and make sure they're good to go for the upcoming season. It's at this stage that there's some contention on what to replace, why to replace it and when to replace it... continue reading
Outboard Oil Ratios
Author: Stuart Buckingham Date Posted: 25 July 2017
Anyone who owns, or has owned, a two stroke outboard would have asked themselves the question; how much oil do I mix with my fuel? 100:1, 50:1 or 25:1? It is one of the most asked questions for those required to pre-mix their oil and fuel together. Below I have listed the oil ratios recommended by manufacturers and a few tips based on my experience... continue reading
What to check before going boating
Author: Stuart Buckingham Date Posted: 5 July 2017
Going boating should be a relaxing and enjoyable experience with family and friends, however, a lack of preparation can see a nice day planned turn into a shemozzle with your boat never leaving the launching ramp. Here is my quick and easy checklist for your boat, trailer, motor to ensure your next planned outing on the water goes smoothly... continue reading
How to flush your outboard and why it's so important
Author: Stuart Buckingham Date Posted: 22 May 2017
One of the biggest killers of the modern outboard is corrosion and often it's not what you see, but rather what you don't see that causes the biggest problems. Outboards are raw water cooled and draw water directly from their environment to cool down. In fresh water, this is not a problem but in saltwater, it opens the engine up to salt build up and corrosion within the outboards internal cooling passages... continue reading
Why Won't My Outboard Start?
Author: Stuart Buckingham Date Posted: 21 April 2017
There's nothing more frustrating than getting to the boat ramp to find that your outboard won't start. We've all been there before and we'll probably all be there again one day too. The following is a small checklist of some of the obvious areas to check if you're experiencing troubles... continue reading
Troubleshooting 2 Stroke Ignition Problems
Author: Stuart Buckingham Date Posted: 30 March 2017
This most common thing I get asked over the phone to assist with is diagnosing outboard ignition problems. Whilst I am always happy to try and help in diagnosis, it can be very hard to do so over the phone. Apart from having the right tools to assist in diagnosis, a basic understanding of how a two stroke ignition system works is fundamental. The following is a list of what makes up an ignition system from start to finish... continue reading
Tips For Buying A Used Boat
Author: Stuart Buckingham Date Posted: 23 March 2017
It's hard not to be excited about buying a new boat. You've just seen a bargain on the side of the road and as you make the U-turn to get a closer look your head fills with images of large snapper, kingfish and sunny days out on the water with the family. This is exactly what boating is about but, be wary that your boating dream doesn't become your boating nightmare... continue reading
How To Replace Gear Oil
Author: Stuart Buckingham Date Posted: 30 July 2020
Whether your outboard is 2 stroke or 4 stroke it will have a gearbox. The gearbox is the area of your outboard that the propeller is fitted to and, as the name suggests, a gearbox is where your outboards forward, neutral and reverse gears and bearings are located. ...
Comment (1)
How To Check An Outboard Thermostat
Author: Stuart Buckingham Date Posted: 27 June 2019
If I were to ask you what the five most important things to check when servicing an outboard were most would rate a thermostat pretty low and some, in fact, wouldn’t even rate it. We are trained to think that the heart of the cooling system is the water pump and it should be checked and changed annually, and this is correct, but if the water pump ...
Comment (5)
How To Store Fuel In Your Boat
Author: Stuart Buckingham Date Posted: 7 March 2019
You’re heading home from the boat ramp, it’s been your last outing f...
Comment (3)
How A Water Separator Fuel Filter Works
Author: Stuart Buckingham Date Posted: 21 November 2018
Bad fuel can quickly cause problems for outboard engines by clogging injectors, gumming up carburettor jets or causing all sorts of running problems that can result in a shortened outboard life and hefty repair bills. &nb...
Getting Your Boat Spring/Summer Ready
Author: Stuart Buckingham Date Posted: 30 September 2018
Spring is in the air! Yep, it's that time of year that many have been waiting for... boating season. Soon the snapper will be plentiful and the warmer weather w...
What To Look For When Inspecting Your Water Pump
Author: Stuart Buckingham Date Posted: 27 April 2018
Your outboards water pump is its main cooling mechanism, without it your engine would overheat in seconds leaving you bobbing around the ocean like a randomly positioned FAD. If you're someone who doesn't m...
Comment (1)
Tips for buying a used outboard
Author: Stuart Buckingham Date Posted: 28 February 2018
One of the biggest misconceptions that people have is that an outboard with good compression on the block is in excellent order. This is only a partial truth. An outboard does not only c...
Comment (1)
What Sand And Weed Can Do To Your Outboard
Author: Stuart Buckingham Date Posted: 30 January 2018
As we all know, our rivers, bays, seas and oceans all consist of various environments. Environments can be anything from sand, rock, weed, gravel...
Comment (3)
Genuine Vs. Aftermarket
Author: Stuart Buckingham Date Posted: 22 November 2017
So, this is something I have been a bit reluctant to write about, being that I have a biased view and vested interest in aftermarket parts. However, it's something I get asked about all day every day by ...
Comment (3)
Zinc vs. Aluminium Anodes
Author: Stuart Buckingham Date Posted: 20 October 2017
Anodes, for those who may not know, are the bare metal looking objects bolted in various positions on your outboard. The most obvious ones are the trim tab anode above your p...
Comment (2)
Understanding Propellers
Author: Stuart Buckingham Date Posted: 18 September 2017
Propellers, every outboard has one. Whether it's stainless steel, alumin um or plastic they all have the same task, which is to push your boat forward or backward. But, the wrong propeller on your outboard can cause under performance in the way of a lack of top-end speed, hole shot or could possibly cause excessive load on your outboard resulting in powerhead failure. ...
Comment (2)
What needs replacing on your outboard
Author: Stuart Buckingham Date Posted: 17 August 2017
It's about this time of year, when Spring is just around the corner and the chill of Winter is subsiding, that most of us decide it's time to give our outboards a once over and make sure they're good to go for the upcoming season. It's at this stage that there's some contention on what to replace, why to replace it and when to replace it. The following list is a guide on the major parts that need replacing...
Comment (1)
Outboard Oil Ratios
Author: Stuart Buckingham Date Posted: 25 July 2017
Anyone who owns, or has owned, a two stroke outboard would have asked themselves the question; how much oil do I mix with my fuel? 100:1, 50:1 or 25:1? It is one of the most asked questions for those required to pre-mix their oil and fuel together. Below I have listed the oil ratios recommended by manufacturers and a few tips based on my experience. 100:1 - Mix 50ml of oil per 5ltrs of fuel. Recommended by Yamaha and Suzuki f...
Comment (21)
What To Check Before Going Boating
Author: Stuart Buckingham Date Posted: 5 July 2017
Going boating should be a relaxing and enjoyable experience with family and friends, however, a lack of preparation can see a nice day planned turn into a shemozzle with your boat never leaving the launching ramp. Here is my quick and easy checklist for your boat, trailer, motor to ensure your next planned outing on the water goes smoothly. Boat...
Comment (5)
How to flush your outboard correctly and why it’s so important
Author: Stuart Buckingham Date Posted: 22 May 2017
One of the biggest killers of the modern outboard is corrosion and often it's not what you see, but rather what you don't see that causes the biggest problems. Outboards are raw water cooled and draw water directly from their environment to cool down. In fresh water, this is not a problem but in saltwater, it opens the engine up to salt build up and corrosion within the outboards internal cooling passages. The build up of sa...
Comment (29)
Why Won't My Outboard Start?
Author: Stuart Buckingham Date Posted: 21 April 2017
There's nothing more frustrating than getting to the boat ramp to find that your outboard won't start. We've all been there before...
Troubleshooting 2 Stroke Ignition Problems
Author: Stuart Buckingham Date Posted: 30 March 2017
The most common thing I get asked over the phone to assist with is diagnosing outboard ignition problems. Whilst I am always happy to try and help in diagnosis, it can be very hard to do so over the phone. Apart from having the right tools to assist in diagnosis, a basic understanding of how a two stroke ignition system works is fundamental. The following is a list of what makes up an ignition system from start to finish. 1. Battery ...
Comment (225)
Comments (4)
1997 4 stroke 9.9hp
23 September 2023I have a 1997 9.9 hp 4 stroke and I have a couple problems, first is it’s really hard to cold start, I will try in the morning and I can’t get it to fire but 30-45 mins later and she will fire right up and once I do get it fired up at full throttle it will die but fire back up on first key turn and then 30 mins after all that she will run fine fires right up and doesn’t die at full throttle, any help would be appreciated greatly
Outboard Spares Response
Hi there, I would suggest taking the carby off and overhauling it whilst seeing if there is any contaminants in there making sure to thoroughly clean all jets. Refit and tune. Then see if the problem still exists. Cheers.
2004 Mercury two stroke carbureted engine
By: Kim Forrester on 20 January 2021Had carbs disassembled and flushed/cleaned. Reinstalled and engine ran good. Went out fishing and all seemed good on that trip. Took it out a few days later for a wot test for approximately thirty seconds, ran good. Was not aggressive with throttle advance not wanting to cause unnecessary stress. Reduced power settings to three thousand rpm and came back into the dock area and went into idle setting for taxi to my slip. Engine started idling rough and remained rough into the slip. Engine died on it’s own. Hard to restart, but ran ok above twelve hundred rpm. In idle, very rough still. Died on it’s own. Started it today, started fine but rough, ok above approx twelve hundred rpm. Could I have created a pre ignition condition during the brief wot test and burned a piston? Filters were replaced back in mid November prior to the Carb work. I’m in San Carlos Son Mexico. Thank you.
Outboard Spares Response
Hi, Hmm, I doubt you have burnt a piston but check the compression first and see how you go. I would think it is a stator issue by the way you have described it. I'd be checking the stator output and seeing if it is within spec. Good Luck!
1992 yamaha 150 pro V oil leak
By: Eugene J DiMichele on 13 April 2019started motor first time this season, would not stay running, walked to back of boat and saw oil pouring from casing. oil is coming out of bottom two carbs, sounds like oil pump constantly running even with out motor running just key on,
Outboard Spares Response
Hi, sounds to me like the joint link on the end of the oil pump rod (between the carbies and the oil pump) has cracked and split. When this happens the oil pump advances the consumption to max (it does this as a safety precaution rather than having the pump deliver less oil than required and have the engine run lean on oil) and causes over oiling. Simple fix with about a $10 part, assuming I am correct. Cheers
1997 25hp mariner 2 stroke problems
24 February 2019I have a 25hp mariner 2 stroke while running I had a wire get nicked going from the the Cdi box to the stator by the flywheel which shorted and caused me to have no spark.I replaced to the coil pack and the stator and got my spark back and it cranks right up now but now it won’t run full throttle it’s like it’s missing are choking down under a load. Any advice would be appreciated?
Outboard Spares Response
Hi, Thanks for getting in touch. From what you have said there is a chance that the switch-box may have been compromised when the stator wire was damaged. This is because the flywheel would have created a short-to-ground which may have damaged the switchbox. If you can get your hands on another switchbox I'd be looking down this path. I hope this helps. Cheers