Havent uploaded a video in years. Ive been meaning to to this for a very long time. Anyways its not the best but maybe it might just help someone else out.
I'm so happy you are making videos again! your 550 videos helped me so much with getting mine dialed in! you do an awesome job explaining everything. good luck with your 650, I hope you video the whole restoration.
Thanks Dean! Sometimes it feels like nobody never really watches these, lol.. I do have some big plans for this one that I will be videoing. everything from milling the head, topend rebuild, crank seals, body repair and way more.
+brads3111 that should be awesome, no one seems to know much about stand ups anymore so having you making videos like this is awesome. Passing on the little tricks that you need to know if you have a stand up haha
+brads3111 that should be awesome, no one seems to know much about stand ups anymore so having you making videos like this is awesome. Passing on the little tricks that you need to know if you have a stand up haha
About to buy one, Owner is asking $800 says it in mint condition with no issues! Im a mechanic by trade and a dirt bike guy so I don’t know much about skis.
Cowboy4737. Hows it going! First thing first just like a boat its rare to get your money out of it. There are motor mount shims under the engine mount. Each corner to each mount has a different amount of shims. Dont! Loose or mismatch the shims or else your life is over. When you finally rebuild your motor replace the crank shafts seals. More than worth it. Hope you enjoy!
brads3111 I plan on keeping it so I’m not too worried about the $$$ He says it needs nothing so I plan on maybe putting a graphics kit on it but I’ll do my homework and I ordered a service manual for it, Thanks for the reply...
Thanks for the reply. I did do pistons and rings. I did not do the crank seals. Water was still pissing. Starts and runs great just would go under load. I did remove oil pump and use pre mix. Very old k&n air filter can that be it? Btw thanks used this video when I replumbrd it last year.
@@johnnygalvan1344 no. That gasket is what seals the head to the cylinder block. That's what helps keep compression up and water from seeping into the combustion chamber. That head gasket must be replaced each time the head is removed. $20
Hey buddy I have a question . I have two hoses coming from the water box . The big hose goes to the pipe but I have no idea where the skinny hose goes to that’s located all the way in the back of the box .
@johnnygalvan1344 those are just cooling lines. Your exhaust should have tons of water going through the entire exhaust system and probably won't need additional cooling to the water box. But if you want you can tee in and run extra lines to the box.
@johnnygalvan1344 on no don't be worried at all. The exhaust gasses will push it out. The extra inlets are for extra cooling in hot water and hard core racing.
Hey Brad I just found your videos on Jet Skis and love 'em! I know it's been years since you've posted Jet Ski videos and hpefully you still monitor your youtube channel. We (my family) have 5 Jet Skis; 2 of which are similar to yours. A 1990 550SX and a 1991 650SX. My questions for you is are simple ones. Which of the 2 ski's is faster? ... and if it's the 550 is it because of more mods? and Which is the most fun to ride? .... and why? Thanks man!
Thats a tough one. I have a 1986 550 not the 550sx. The 550sx actually has a reed motor " more power. Out of the hole the 550sx is faster. In the early days they preferred the 550sx over the 650sx for racing. Top speed the 650sx is faster i believe. But only by 2 mph or something small. The 550sx is less stable and l lighter which is more fun for tricks. The 650sx is just better all day on the lake for stability for high speed. If you watch Craigslist and ebay closely you can find aftermarket parts kind of cheap. The best thing for power is always a rebuilt engine if its time. Go have fun.
@@brads3111 - Thanks for the quick reply. One correction; we have a 1990 550sx which was the 1st year using the 'sx' in the name but it isn't a reed motor, It's still a piston port motor in that year but the hull has rear exit exhaust so they gave it the SX name... Thanks again...
@@dboybord in that case out of thw hole the 650sx is a tad faster. And that exhaust is a little quite and not in your ears like the prior models were it would echo off the water.
I have 90 650sx and my question is I have three lines coming out of fire wall, two on carb side and one in exhaust side. when I got this ski the top line on the carb side was blocked off. with a whole new motor and whole West coast exhaust I'm still confused as to what does what and goes where?? and yes I've researched and read and looked at pictures but with no 100% certainty that it's correct. thanks.
Where did you locate that purple water line....I've been searching everywhere...I really want it in hot pink for my pink Kawasaki SC. I found it for my 440 way back in the 80's and it was readily available. I have searched the whole world wide interwebs and nothing. Ideas??? Suppliers???
It's really simple. Just get on google and type in the size of the hose inner diameter the color and the word silicone. For example only and not true to the size " 1/4 inch purple silicone hose"
Hey brad i just installed a coffmans aftermarket exhaust pipe on my 650 and i’m not getting any water from the outboard pisser when i’m riding. I get water flow when i flush the system manually when the garden hose water has direct flow into the head, and i also get water flow out the pisser when the garden hose is put in to the rear line out the back of the ski from the pump. But I get no water when i’m riding and the pump itself is submerged in water. is there any way i can send you a few pictures of my setup and you could tell me if i have it ran correctly? Thanks
So I have dual cooling lines from my pump. Am I supposed to tap my second line into my exhaust manifold like the original line? And will my lines be different than yours because I have dual cooling? If so please explain.
There should only be a single cooling line from the pump if there's a secound line running from the pump and through the ski hull than that ski was modified. Very interesting. If you can plug both lines into the exhaust that would be great. But you also in uncharted territory. You might even half to Y those lines together prior to the exhaust if theres only one water inlet.. Just a thought.
Hey Brad I have a Kawasaki 650sx I rebuilt last year. Runs great but by end of the season it would not go just bogged down. No weeds. Wondering if it is a gasket in the cooling system letting water into cylinder. Any ideas would be appreciated. Thanks!
Donald Reisert hey don, as long as water is coming out of the pisser then yo u know the cooling js correct. If its bogging down amd still runs your looking at a air to fuel ratio issue. Fresh gas? Did you replace the crank seals with a true rebuild, that is very important. True rebuild is piston and rings replacement. Do you still have good compression?
I had my engine bogging and wouldnt stay running when i was running hose water through the system. It turns out my engines cylinder head gasket was blown so i rebuild the whole top end and new crank seals. About to throw it in so hopefully it works
Do you have another fitting on your pipe like where you can’t see it like lower on the big part of the pipe? Because I don’t and I was just wondering what to do if I don’t have one
You will need to start diagnosing starting from the jet pump. The jet pump supplies the water pressure. Some time the line from the jet pump becomes clogged. I would start there. Something is clogged somewhere.
No aftermarket carb. These are very simple motors and the stock carb is more than enough. If you want more power, rebuild the motor, replace the reeds and replace the the cranks seals. Then it will run like a beast.
Hey buddy I bought a jet jon boat they just put a jet ski motor in a boat, start good, runs good but not too fast when I accelerate to go faster I bogs down I open where the thermostat goes and there was none so, do you think thermostat has something to do with it or maybe carbs I'm no mechanic so if its alot work that it needs done I might sell it to someone that can fix it and get some money back, by the way compression is 125 on each cylinder which has 2
125 is still good. I would look at either clean or slightly adjusting the carb. Usually theres hi, med and low screws for air fuel ratio.. Sometimes theres also two screws for high and low afr's. Start there.
Tuning is super simple. Higher rpms you just turn the high jet needle until it stops bogging down. It's that simple. Also sometimes you need to check the rear main sill. That could have air coming in and making the rear cylinder run lean.
Hello Brad, I have a 1986 JS550 I just picked up from Craigslist. It was sitting for 2 years but it fires right up and runs perfect at that aspect. Currently there is no water coming out of the pisser hole on the left, this is neither in the water or hooked up to a hose. I called two mechanics and they said to take the head off and clean the water jackets underneath the head. Any ideas of what else it could be. I cleared out all of the hoses to make sure there was no cobwebs or sand or anything and is where I am at now. Any feedback would be great.
start witht the pump line and then move threw the hole system, dont take the head off. if you do you will have to replace the head gasket because they are one time use head gaskets.
@@brads3111 if you have it hooked up differently from the pump it would be different though? You just want to make sure that the one going into the manifold is water coming from the pump?
Donald Reisert so i did another vid on how to replace the crank seals. You can start up the motor and spray some engine start at the rear crank seal and see if it changes rpm.. if so it needs to be replaced. Start there.
Donald Reisert. Also i forgot to mention that if its reving up like it has power but not going. It coupd be cavitation. Theres a air leak around the pump where the pump/propeller has so much power its pulling air feom the engine bay and mixing with the water.. you will have to re silicone the pump housing and all.
I'm so happy you are making videos again! your 550 videos helped me so much with getting mine dialed in! you do an awesome job explaining everything. good luck with your 650, I hope you video the whole restoration.
Thanks Dean! Sometimes it feels like nobody never really watches these, lol.. I do have some big plans for this one that I will be videoing. everything from milling the head, topend rebuild, crank seals, body repair and way more.
+brads3111 that should be awesome, no one seems to know much about stand ups anymore so having you making videos like this is awesome. Passing on the little tricks that you need to know if you have a stand up haha
+brads3111 that should be awesome, no one seems to know much about stand ups anymore so having you making videos like this is awesome. Passing on the little tricks that you need to know if you have a stand up haha
Sx 650... foi meu primeiro jet. Sensacional.
Great will do. Thanks Brad I really appreciate the help. I will let you know how I make out
i would but neither ski is up and running rite now. need a good weekend worth on it. just putting it back together.
About to buy one, Owner is asking $800 says it in mint condition with no issues! Im a mechanic by trade and a dirt bike guy so I don’t know much about skis.
Cowboy4737. Hows it going! First thing first just like a boat its rare to get your money out of it. There are motor mount shims under the engine mount. Each corner to each mount has a different amount of shims. Dont! Loose or mismatch the shims or else your life is over. When you finally rebuild your motor replace the crank shafts seals. More than worth it. Hope you enjoy!
brads3111 I plan on keeping it so I’m not too worried about the $$$ He says it needs nothing so I plan on maybe putting a graphics kit on it but I’ll do my homework and I ordered a service manual for it, Thanks for the reply...
Thanks for the reply. I did do pistons and rings. I did not do the crank seals. Water was still pissing. Starts and runs great just would go under load. I did remove oil pump and use pre mix. Very old k&n air filter can that be it? Btw thanks used this video when I replumbrd it last year.
I have metal gaskets blocking cylinder block to cylinder heads . Should I remove it. ?
@@johnnygalvan1344 no. That gasket is what seals the head to the cylinder block. That's what helps keep compression up and water from seeping into the combustion chamber. That head gasket must be replaced each time the head is removed. $20
Hey buddy I have a question . I have two hoses coming from the water box . The big hose goes to the pipe but I have no idea where the skinny hose goes to that’s located all the way in the back of the box .
@johnnygalvan1344 those are just cooling lines. Your exhaust should have tons of water going through the entire exhaust system and probably won't need additional cooling to the water box. But if you want you can tee in and run extra lines to the box.
@@brads3111 I’m just afraid that it’s gonna fill up my box with water
@@brads3111 thank you for the quick response. I’m like an hour away from going out with my JetSki in the ocean my 750 SS Kawasaki.
@johnnygalvan1344 on no don't be worried at all. The exhaust gasses will push it out. The extra inlets are for extra cooling in hot water and hard core racing.
I have the same exhaust ,How do I run the cooling line when my ski has only one cooling line barb coming off from the head
Rewatch the video. At 2:00 minutes I explain that.
Hey Brad I just found your videos on Jet Skis and love 'em! I know it's been years since you've posted Jet Ski videos and hpefully you still monitor your youtube channel. We (my family) have 5 Jet Skis; 2 of which are similar to yours. A 1990 550SX and a 1991 650SX. My questions for you is are simple ones. Which of the 2 ski's is faster? ... and if it's the 550 is it because of more mods? and Which is the most fun to ride? .... and why? Thanks man!
Thats a tough one. I have a 1986 550 not the 550sx. The 550sx actually has a reed motor " more power.
Out of the hole the 550sx is faster. In the early days they preferred the 550sx over the 650sx for racing. Top speed the 650sx is faster i believe. But only by 2 mph or something small. The 550sx is less stable and l lighter which is more fun for tricks. The 650sx is just better all day on the lake for stability for high speed.
If you watch Craigslist and ebay closely you can find aftermarket parts kind of cheap. The best thing for power is always a rebuilt engine if its time. Go have fun.
@@brads3111 - Thanks for the quick reply. One correction; we have a 1990 550sx which was the 1st year using the 'sx' in the name but it isn't a reed motor, It's still a piston port motor in that year but the hull has rear exit exhaust so they gave it the SX name... Thanks again...
@@dboybord in that case out of thw hole the 650sx is a tad faster. And that exhaust is a little quite and not in your ears like the prior models were it would echo off the water.
I have 90 650sx and my question is I have three lines coming out of fire wall, two on carb side and one in exhaust side. when I got this ski the top line on the carb side was blocked off. with a whole new motor and whole West coast exhaust I'm still confused as to what does what and goes where?? and yes I've researched and read and looked at pictures but with no 100% certainty that it's correct. thanks.
Just now saw this message. Give me a few days and I will get back to you.
Where did you locate that purple water line....I've been searching everywhere...I really want it in hot pink for my pink Kawasaki SC. I found it for my 440 way back in the 80's and it was readily available. I have searched the whole world wide interwebs and nothing. Ideas??? Suppliers???
It's really simple. Just get on google and type in the size of the hose inner diameter the color and the word silicone. For example only and not true to the size " 1/4 inch purple silicone hose"
Hey brad i just installed a coffmans aftermarket exhaust pipe on my 650 and i’m not getting any water from the outboard pisser when i’m riding. I get water flow when i flush the system manually when the garden hose water has direct flow into the head, and i also get water flow out the pisser when the garden hose is put in to the rear line out the back of the ski from the pump. But I get no water when i’m riding and the pump itself is submerged in water. is there any way i can send you a few pictures of my setup and you could tell me if i have it ran correctly? Thanks
From the line going the engine to the pump can you blow through it? Its very common that somewhere in the line it becomes obstructed.
So I have dual cooling lines from my pump. Am I supposed to tap my second line into my exhaust manifold like the original line? And will my lines be different than yours because I have dual cooling? If so please explain.
There should only be a single cooling line from the pump if there's a secound line running from the pump and through the ski hull than that ski was modified. Very interesting.
If you can plug both lines into the exhaust that would be great. But you also in uncharted territory. You might even half to Y those lines together prior to the exhaust if theres only one water inlet.. Just a thought.
Hey Brad I have a Kawasaki 650sx I rebuilt last year. Runs great but by end of the season it would not go just bogged down. No weeds. Wondering if it is a gasket in the cooling system letting water into cylinder. Any ideas would be appreciated. Thanks!
Donald Reisert hey don, as long as water is coming out of the pisser then yo u know the cooling js correct. If its bogging down amd still runs your looking at a air to fuel ratio issue. Fresh gas? Did you replace the crank seals with a true rebuild, that is very important. True rebuild is piston and rings replacement. Do you still have good compression?
I had my engine bogging and wouldnt stay running when i was running hose water through the system. It turns out my engines cylinder head gasket was blown so i rebuild the whole top end and new crank seals. About to throw it in so hopefully it works
Hey Brad! Any update or other mods with your 650? I have one and this vid was super helpful
not at this time. but definitely more to come.
Do you have another fitting on your pipe like where you can’t see it like lower on the big part of the pipe? Because I don’t and I was just wondering what to do if I don’t have one
There's not a extra one on the expansion pipe.
What you can see in the video is all their is.
@@brads3111 ok thank you
How would i route a westcoast pipe on a 1991 kawasaki x2 with single cooling?
Hmmmm can you be a little bit more detailed in your question? This one has a single inlet into the exhaust manifold.
Why is water standing on my exhaust pipe seems like it's not coming out I don't know what my problem is please help me
You will need to start diagnosing starting from the jet pump. The jet pump supplies the water pressure. Some time the line from the jet pump becomes clogged. I would start there. Something is clogged somewhere.
Do you have an aftermarket carb
No aftermarket carb. These are very simple motors and the stock carb is more than enough. If you want more power, rebuild the motor, replace the reeds and replace the the cranks seals. Then it will run like a beast.
Hey buddy I bought a jet jon boat they just put a jet ski motor in a boat, start good, runs good but not too fast when I accelerate to go faster I bogs down I open where the thermostat goes and there was none so, do you think thermostat has something to do with it or maybe carbs I'm no mechanic so if its alot work that it needs done I might sell it to someone that can fix it and get some money back, by the way compression is 125 on each cylinder which has 2
125 is still good. I would look at either clean or slightly adjusting the carb. Usually theres hi, med and low screws for air fuel ratio..
Sometimes theres also two screws for high and low afr's.
Start there.
@@brads3111 thank you sir I really appreciate it
Tuning is super simple. Higher rpms you just turn the high jet needle until it stops bogging down. It's that simple. Also sometimes you need to check the rear main sill. That could have air coming in and making the rear cylinder run lean.
I have a question bud. Can I send you my setup
What do you mean send me your setup?
@@brads3111 thanks for the reply bro. Do you have a email I can send the pictures to would help a lot!
@@johnnyperez8670 brads3111@yahoo.com
Hello Brad, I have a 1986 JS550 I just picked up from Craigslist. It was sitting for 2 years but it fires right up and runs perfect at that aspect. Currently there is no water coming out of the pisser hole on the left, this is neither in the water or hooked up to a hose. I called two mechanics and they said to take the head off and clean the water jackets underneath the head. Any ideas of what else it could be. I cleared out all of the hoses to make sure there was no cobwebs or sand or anything and is where I am at now. Any feedback would be great.
Did you watch my other video on 1986 js550 cooling system? make sure you watch it!
start witht the pump line and then move threw the hole system, dont take the head off. if you do you will have to replace the head gasket because they are one time use head gaskets.
It looks like the pipe was very hot so is this the correct way?
Yes, this is the correct setup
@@brads3111 if you have it hooked up differently from the pump it would be different though? You just want to make sure that the one going into the manifold is water coming from the pump?
@@maddoxf6262 yes!! Just follow this diagram and you will be just fine.
Sorry not go under load
Donald Reisert so i did another vid on how to replace the crank seals. You can start up the motor and spray some engine start at the rear crank seal and see if it changes rpm.. if so it needs to be replaced. Start there.
Donald Reisert. Also i forgot to mention that if its reving up like it has power but not going. It coupd be cavitation. Theres a air leak around the pump where the pump/propeller has so much power its pulling air feom the engine bay and mixing with the water.. you will have to re silicone the pump housing and all.