Where do these motor mount shims go? Also, what is this thing in the head?

[streetroc]

These shims fell out of the motor mounts on my FX1 when I pulled the engine. Which mounts do they go on?



Also, what is this thing that goes in the cylinder head? Is it some kind of a knock sensor? My FX1 had it but the same 61x engine that I pulled out of my superjet didn't have it and the wires leading to it were cut by the previous owner.



It goes right here in the cylinder head

 

[Crab]

Over temp sensor, don't toss the shims you will need them when aligning the motor.

 

[Vumad]

We can't tell you where the shims go. They are to correct the alignment of your specific ski. There are directions for properly shimming on this site. The short of it is that, with your midshaft housing out, you shim the pump. Then you install the midshaft housing and shim the motor. Assuming your pump is shimmed, you just need to shim the motor when you reinstall it. Move them to different locations until your coupler halves are aligned with each other.

The other part is your temp sensor. It is optional. I have an aftermarket head, so I just bundled it up and zip-tied it to the ebox.

 

[streetroc]

Over temp sensor, don't toss the shims you will need them when aligning the motor.

We can't tell you where the shims go. They are to correct the alignment of your specific ski. There are directions for properly shimming on this site. The short of it is that, with your midshaft housing out, you shim the pump. Then you install the midshaft housing and shim the motor. Assuming your pump is shimmed, you just need to shim the motor when you reinstall it. Move them to different locations until your coupler halves are aligned with each other.

The other part is your temp sensor. It is optional. I have an aftermarket head, so I just bundled it up and zip-tied it to the ebox.

Oh okay. I didn't realize that the motor had to be aligned. I thought I could just drop in the replacement engine and fire it up. I didn't touch the pump or the mid shaft so I'm assuming that they are still aligned correctly. Do either of you guys have a link to the engine alignment instructions?

Also, how does that temperature sensor work? Does it automatically shut off the ignition if the engine gets too hot?

 

[jetfreak78]

 

[jetfreak78]

 

[streetroc]

Thanks!

 

[Big Kahuna]

On thos site there is a section called Tech Faq. Spend some time looking. If you find some links that do not work let me know. A site upgrade years ago killed many o the links. But there are ways around it.

 

[Vumad]

Oh okay. I didn't realize that the motor had to be aligned. I thought I could just drop in the replacement engine and fire it up. I didn't touch the pump or the mid shaft so I'm assuming that they are still aligned correctly. Do either of you guys have a link to the engine alignment instructions?

Also, how does that temperature sensor work? Does it automatically shut off the ignition if the engine gets too hot?

It depends on if the pump was aligned before. I put pumps into (my) skis for years never knowing the pumps needed to be shimmed. Lots of new riders who do their own work would overlook the step. If the pump was ever removed without noting the shim locations, then it was put back incorrectly. It will probably be fine for a long time, but it could shorten your midshaft life. I wouldn't worry about it too much, but do you best going forward.

The temp sensor puts it into limp mode, which is where it limited the RPM to prevent engine damage. I don't think the ski fully shuts off.

 

[streetroc]

It depends on if the pump was aligned before. I put pumps into (my) skis for years never knowing the pumps needed to be shimmed. Lots of new riders who do their own work would overlook the step. If the pump was ever removed without noting the shim locations, then it was put back incorrectly. It will probably be fine for a long time, but it could shorten your midshaft life. I wouldn't worry about it too much, but do you best going forward.

The temp sensor puts it into limp mode, which is where it limited the RPM to prevent engine damage. I don't think the ski fully shuts off.

As far as I can tell I am the first person to ever take the engine out. How can I tell if the mid shaft is bad? I noticed that the bearing makes a little bit of noise when I turn it by hand. There isn't any play in it when I try to move it up and down though

 

[Vumad]

As far as I can tell I am the first person to ever take the engine out. How can I tell if the mid shaft is bad? I noticed that the bearing makes a little bit of noise when I turn it by hand. There isn't any play in it when I try to move it up and down though

If it spins smooth and doesn't leak water you should be good.

 

[E350]

You should have a zerk fitting at the base of the carburetor to which a tube attaches which runs the Intermediate Unit to grease it. The Service Manual does not specify the grease. It just says use: "Water Resistent Grease."

I have been using Lucas Marine grease for the little grease gun.

This reminds me. I need to grease ours. . .

 

[streetroc]

If it spins smooth and doesn't leak water you should be good.

It spins smoothly and doesn't have any play in it. I also haven't noticed any leaks from it. I was just a little concerned that when I spun it by hand it made noise like a bad wheel bearing on a car.

 

[streetroc]

You should have a zerk fitting at the base of the carburetor to which a tube attaches which runs the Intermediate Unit to grease it. The Service Manual does not specify the grease. It just says use: "Water Resistent Grease."

I have been using Lucas Marine grease for the little grease gun.

This reminds me. I need to grease ours. . .

Oh okay yeah I see it. I was wondering what that tube going from the mid shaft bearings to the carb was for. Is there any trick to it or do you just put a syringe full of grease over the tube and squirt it down in there?

Also, I'm very curious as to why it was designed that way. Does it somehow siphon gas/oil from the carb down to the bearings while the engine is running?

 

[E350]

The tube should hook up to a zerk grease fitting in the base of the carb:

The female part of a grease gun locks onto the male zerk fitting and you pump in the grease through the tube to the intermediate shaft bearing. The rigid tube plus the extension works best to access the intermediate shaft bearing zerk fitting:

https://www.walmart.com/ip/BEL-RAY-Grease-Gun-3-oz-Cartridge-Silver-30-oz-150505/910683926

Be gentle pump slowly, move your fingers along the tube, you will feel the grease move through the tube to the intermediate bearing. It will get harder to pump. Stop, don't over pump. Then add a little grease after every few next rides to make sure that the bearing has accepted the grease. Don't over pump.

Get the small gun (above) which accepts the smaller 3 oz. tubes of grease:

You will also need it to grease other zerk fittings on the ski (such as on pump at least on the Kawasaki's).

But it has no connection to the carb except that the zerk fitting is attached to the carb base.

I am a paint by numbers kind of guy. I just follow what the OEM Yamaha Service Manual says.

I would like to hear what others do to keep their ski greased.

 

[streetroc]

The tube should hook up to a zerk grease fitting in the base of the carb:

The female part of a grease gun locks onto the male zerk fitting and you pump in the grease through the tube to the intermediate shaft bearing. The rigid tube plus the extension works best to access the intermediate shaft bearing zerk fitting:

https://www.walmart.com/ip/BEL-RAY-Grease-Gun-3-oz-Cartridge-Silver-30-oz-150505/910683926

Be gentle pump slowly, move your fingers along the tube, you will feel the grease move through the tube to the intermediate bearing. It will get harder to pump. Stop, don't over pump. Then add a little grease after every few next rides to make sure that the bearing has accepted the grease. Don't over pump.

Get the small gun (above) which accepts the smaller 3 oz. tubes of grease:

You will also need it to grease other zerk fittings on the ski (such as on pump at least on the Kawasaki's).

But it has no connection to the carb except that the zerk fitting is attached to the carb base.

I am a paint by numbers kind of guy. I just follow what the OEM Yamaha Service Manual says.

I would like to hear what others do to keep their ski greased.

Ok cool. Thanks for the tip man, I had no idea I was supposed to grease that. Are there any other grease fittings on an FX1 that I should look out for?

Also, is it still possible to get an original FX1 service manual from Yamaha?

 

[E350]

This is the paper Service Manual which I have, but I searched and I cannot find it for you. The SKU# comes up with outboard motors. It is wrong. But this paper manual is great:


Here is an electronic version of the manual for $5:

https://www.ebay.com/itm/YAMAHA-FX1...493054?hash=item3429514bbe:g:ZcIAAOSw7qFe1XWv

The guy only has a 94% rating, which is very, very bad. But it is only a $5 risk. If I were you, I would buy it and search dealerships for New Old Stock (NOS) paper manual also.

 

[streetroc]

This is the paper Service Manual which I have, but I searched and I cannot find it for you. The SKU# comes up with outboard motors. It is wrong. But this paper manual is great:
View attachment 396581Here is an electronic version of the manual for $5:

https://www.ebay.com/itm/YAMAHA-FX1...493054?hash=item3429514bbe:g:ZcIAAOSw7qFe1XWv

The guy only has a 94% rating, which is very, very bad. But it is only a $5 risk. If I were you, I would buy it and search dealerships for New Old Stock (NOS) paper manual also.View attachment 396582

Awesome thanks!