Yamaha VST filter change?

[Traxion]

Anyone change the VST filter on a Yamaha four stroke? My F200 needs it done. Doesn’t look horrible, just will take a bit of time. Any tips are appreciated.

 

[1lessdog]

YouTube is your friend.

 

[SDMF]

I didn’t even know there was such a thing. How many hours on your motor? Are you saying it needs to be done due to the number of hrs on the motor or is the motor performance symptomatic of needing it done?

 

[Traxion]

It’s a 2003 but only 240 hours. I’ve got a stutter on takeoff at higher load. Research says that’s the culprit. I think the service interval is 250 hours but likely not 22 years.

 

[SDMF]

It’s a 2003 but only 240 hours. I’ve got a stutter on takeoff at higher load. Research says that’s the culprit. I think the service interval is 250 hours but likely not 22 years.

Thanks! I'd never heard of it, was kinda wondering what the symptoms were and when to potentially expect them or possibly pre-empt them. I have a 2012 3.3L F200 w/400-ish hrs on it.

 

[EyesMan34]

I’ve done quite a few of these. If you’re mechanically inclined it’s pretty simple. I recommend taking pictures before you take it apart, for routing fuel lines. Drain the VST tank before you disassemble it with the drain screw on the bottom. Make sure you have a good phillips screwdriver for the little tank screws, they will be very tight. Clean the tank and filter with carb cleaner and a soft toothbrush. I also recommend cleaning the needle valve on the chamber float and test it/the o-ring it seats in. (If you’ve run ethanol through it, it will probably leak, replace them both) Sometimes the VST tank gasket will expand when you separate the tank halves. If it does, throw it in the freezer while you work on cleaning the tank. It will shrink down. And make sure the internal pump is fully seated when you put it back together, the rubber boot in top of it can move and not line up right. Put blue loctite on the little phillips screws when you reassemble it. it’s a pretty basic process. Disassemble/clean/ reassemble

 

[Traxion]

I’ve done quite a few of these. If you’re mechanically inclined it’s pretty simple. I recommend taking pictures before you take it apart, for routing fuel lines. Drain the VST tank before you disassemble it with the drain screw on the bottom. Make sure you have a good phillips screwdriver for the little tank screws, they will be very tight. Clean the tank and filter with carb cleaner and a soft toothbrush. I also recommend cleaning the needle valve on the chamber float and test it/the o-ring it seats in. (If you’ve run ethanol through it, it will probably leak, replace them both) Sometimes the VST tank gasket will expand when you separate the tank halves. If it does, throw it in the freezer while you work on cleaning the tank. It will shrink down. And make sure the internal pump is fully seated when you put it back together, the rubber boot in top of it can move and not line up right. Put blue loctite on the little phillips screws when you reassemble it. it’s a pretty basic process. Disassemble/clean/ reassemble

Thanks a ton!

 

[Retired-Guy]

What is a VST tank? Does my 2011 150 have one?

 

[tikkalover]

 

[Traxion]

I finally did mine today. Wasn’t bad, only line that sucked to get off was the fuel to cooling intercooler line. In hindsight I couldn’t even have taken the whole exchanger loose but then there were more fuel lines to take off.

Unfortunately the VST filter looked ok. Not perfect but not bad. Tank was clean. Changed filter on fuel line coming into the VST and main engine fuel filter. None seemed too restricted. Will see if I threw $170 in parts away or not. Hope it’s not a fuel pump issue as Yamaha must hold plate them. We’ll see how it runs! Thanks again for the help.