Very nice video! I worked in engine design and manufacturing for 40 years for several global automotive companies. It interesting how similar the assembly processes are with marine applications. My particular expertise is in sealing and fastening and again the similarities in specifications are evident with the exception of prelubing the critical fasteners before tightening. In high volume manufacturing fasteners have coatings applied for several reasons but for manufacturing the importance is with regard to keeping a consistent coefficient of friction in the joint! The slightest variation in friction has a impact on the most important aspect of fastening which is clamp load, the force that keeps things together! Just a drop of oil in a torque only tightening strategy with cause the clamp load to rise so in a critical joint where a torque + angle tightening strategy is used this could cause the final clamp load after the angle is added to be higher than expected due to the the preload being higher at the moment the angle is applied! Regarding sealing, the application of RTV/ Yamalube on the lower crankcase to block once the joint is fully tightened will be so thin that it will certainly fail within the first few thermal cycles resulting in a leak due to joint motion as RTV requires a cross section of rubber to be formed once cured as the sealing mechanism requires bonding to both surfaces and then the establishment of the rubber cross section when cured which acts like a rubber band stretching back and forth with the joint motion! Just a couple observations and suggestions to make for a more robust assembly!
Great video! I'm restoring a 2005 70TLR. New powerhead, fuel and oil pumps, CDI unit, and wiring harness. Am changing ALL hoses and check valves. Not worth risking a new powerhead on $100 worth of hoses and clamps.
I live on the northwest coast of Alaska where boats are essential during the summer. would be awesome if a boat school opened up this way. some guys here are ok with them, but most of the time they just up and order a new outboard.. very good and thorough video! happy new year 👊
very time consuming and needs lots of patience and long time mechanical experience to do such a job without big mistakes ,,,thanks for your personal knowledge you kindly share with us,,,,
It's obvious you know these engines - I prefer using a dial bore guage to determine the oil clearance... and I have never any one so frugal with assembally lube... nice job...
I have a Nissan 120 hp two-stroke outboard. The screw on fuel filter was taken off and I noticed the screen inside was installed upside down. Blocking the fuel flow coming in from the top of the fuel housing. Would that cause it not to accelerate it idle fine, but the minute you gave it gas or full throttle it fell on its face.
My brother, thank you very much for this distinguished and righteous work that you are presenting. Thank you very much. You have presented something that you will be shown mercy for on the Day of Resurrection with a righteous deed that will admit you to Paradise by my Lord.❤❤❤❤❤❤
I’m new to this boating world… But I’ve noticed that all these boat engines get really bad corrosion from have the sea water pumped through the engine for cooling… So why not have a coolant tank somewhere on the boat and use actual coolant like in a car? Or is this already a thing thats an aftermarket option?
Lots of inboards use closed cooling systems. Weight isn’t as big of an issue with these, Outboard companies are always trying to reduce weight and improve efficiency, adding an entire cooling system and heat exchangers ads a lot of weight and Bulk the motor, all when you have a practically unlimited supply of cool raw water under the boat. Most outboards are capable of thousands of hours if properly maintained it simply doesn’t make sense.
@@BoatParts Hi great video thanks for sharing.. any idea how much it will cost go the rebuild and any warranty.. my name is Julian i work in Boston at a boat shop and we sale around 30 used Yamaha outboards ,and another 20 for parts (the ones with low compression) thank you
think this video is a build FROM SCRATCH, NOT a re-build, as you DON'T show us how you took it apart, or how you got the block off the outboard bracket.
It's obvious you know these engines - I prefer using a dial bore guage to determine the oil clearance... and I have never any one so frugal with assembally lube... nice job...
I’m so mesmerized by this. Can’t stop watching. 😂 I’m not even a mechanic. Just love to learn
Same lmaooo
Very nice video! I worked in engine design and manufacturing for 40 years for several global automotive companies. It interesting how similar the assembly processes are with marine applications. My particular expertise is in sealing and fastening and again the similarities in specifications are evident with the exception of prelubing the critical fasteners before tightening. In high volume manufacturing fasteners have coatings applied for several reasons but for manufacturing the importance is with regard to keeping a consistent coefficient of friction in the joint! The slightest variation in friction has a impact on the most important aspect of fastening which is clamp load, the force that keeps things together! Just a drop of oil in a torque only tightening strategy with cause the clamp load to rise so in a critical joint where a torque + angle tightening strategy is used this could cause the final clamp load after the angle is added to be higher than expected due to the the preload being higher at the moment the angle is applied!
Regarding sealing, the application of RTV/ Yamalube on the lower crankcase to block once the joint is fully tightened will be so thin that it will certainly fail within the first few thermal cycles resulting in a leak due to joint motion as RTV requires a cross section of rubber to be formed once cured as the sealing mechanism requires bonding to both surfaces and then the establishment of the rubber cross section when cured which acts like a rubber band stretching back and forth with the joint motion! Just a couple observations and suggestions to make for a more robust assembly!
Great video! I'm restoring a 2005 70TLR. New powerhead, fuel and oil pumps, CDI unit, and wiring harness. Am changing ALL hoses and check valves. Not worth risking a new powerhead on $100 worth of hoses and clamps.
Excellent job it was a pleasure watching work on that engine I learned a lot just by watching you.
I live on the northwest coast of Alaska where boats are essential during the summer. would be awesome if a boat school opened up this way. some guys here are ok with them, but most of the time they just up and order a new outboard.. very good and thorough video! happy new year 👊
I so enjoy Yamaha engineering. Excellent video, thanks for taking the time to post it. Top notch!
This guy knows his stuff.
Looks like a dream working with all new parts as opposed to engines that look like they were pulled from the ocean floor!
Loved it actually zoned it there time just got away from me. Wish I had someone like you to take my Honda 200 to for some work
Could someone explain why it’s necessary to use plasti gage if he already knows the number / color of the bearing the block calls for?
Amazing to see how many parts are needed just to turn one propeller.
Thanks from Slam Bang fishing lodge we specialize in great fishing food and good times west coast coast of Vancouver island
Thanks for the video it helped blue to remove the drive shaft bit and replace my shift cam
Extremely detailed good job!
Thanks for reminding me, great job.I have the same model.
very time consuming and needs lots of patience and long time mechanical experience to do such a job without big mistakes ,,,thanks for your personal knowledge you kindly share with us,,,,
非常棒的实际操作视频！虽然有1个半小时，但观看过程令人愉悦
John, don't you do some Honda VTX how to videos? Man you got some serious knowledge.
Amazing video, but my question is wats the savings of doing this versus buying a new engine.
I know iam tardy to the party but are the procedures the same with a 300 hpdi 2 stroke minus oil pump thanks great video
John, thank you for this videos. I just purchased all parts to do a F250. Can I use the same measurements for bearing and rod clearance?
It's obvious you know these engines - I prefer using a dial bore guage to determine the oil clearance... and I have never any one so frugal with assembally lube... nice job...
I have a Nissan 120 hp two-stroke outboard. The screw on fuel filter was taken off and I noticed the screen inside was installed upside down. Blocking the fuel flow coming in from the top of the fuel housing. Would that cause it not to accelerate it idle fine, but the minute you gave it gas or full throttle it fell on its face.
Where did you get the flywheel puller? Looks really hefty!
My brother, thank you very much for this distinguished and righteous work that you are presenting. Thank you very much. You have presented something that you will be shown mercy for on the Day of Resurrection with a righteous deed that will admit you to Paradise by my Lord.❤❤❤❤❤❤
Do you have a video changing a crankshaft sensor on a Yamaha 225 hp. 2007
Very informative. Thanks.
I have a 2004 Mercury 225. I know Yamaha made it,but is it excact ?
Very good video content... meticulously executed with passion.
Does 1998 yamaha 90HP 2stroke with 90psi all cylinder are still good?
Did you just use a regular sharpie for marking bolt sequence etc?
I’m new to this boating world… But I’ve noticed that all these boat engines get really bad corrosion from have the sea water pumped through the engine for cooling… So why not have a coolant tank somewhere on the boat and use actual coolant like in a car? Or is this already a thing thats an aftermarket option?
Lots of inboards use closed cooling systems. Weight isn’t as big of an issue with these, Outboard companies are always trying to reduce weight and improve efficiency, adding an entire cooling system and heat exchangers ads a lot of weight and Bulk the motor, all when you have a practically unlimited supply of cool raw water under the boat. Most outboards are capable of thousands of hours if properly maintained it simply doesn’t make sense.
Can you bore these engines out and give more hp?
Good job sir ❤
What size socket for the flywheel nut?
Excellent video.
Did make the outboard motor vertical stand? I can't seem to find on online?
He is a Maestro
You are the best!
How many times can you stretch those rod bolts?
You are a master ! Thank you
Ball park what does this rebuild cost?
Which Yamabond to use on crankcase?
Gran video. Muchas gracias. 😎👍👍
Good job
Interested
AbsouletlyI loved the video.
I feel that I could rebuild the same motor Watching this video at the same time.
Real nice job sir!!!
Appreciate it!
@@BoatParts Hi great video thanks for sharing.. any idea how much it will cost go the rebuild and any warranty.. my name is Julian i work in Boston at a boat shop and we sale around 30 used Yamaha outboards ,and another 20 for parts (the ones with low compression) thank you
Can I ask how much this cost. Thank
Please kindly explain,plastic gauge check
What was the total cost to do that
good job
Como ago para calcular q tipos de casquetes nesecito hay alguna fórmula matemática?
thanks sir
How much would this cost ?
Nice work. You can rebuild my Yamaha any time..and I am in the market for a re-do on it right now....
think this video is a build FROM SCRATCH, NOT a re-build, as you DON'T show us how you took it apart, or how you got the block off the outboard bracket.
Valve covers twice? Seems counter productive.
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Of course today in 2024 you can't even deliver the boat parts you say you haven't stopped but you really don't
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Installing the valve covers, then removing them in the next step is a bone head move.
Great engine until they fail. And they all prematurely fail!
How is the lower lower mount rubber housing installed? PN- 663-44551-02-4D
You are a master ! Thank you
It's obvious you know these engines - I prefer using a dial bore guage to determine the oil clearance... and I have never any one so frugal with assembally lube... nice job...