An Intro and Some Questions (VST, LP Pumps)

[pstephens46]

The vst screws are a little scary. I went the impact driver route and was surprised on two counts. I had to hit the driver solidly three times to get the screws loose. No damage to screws at all.

[oldmako69]

The screws that hold the top of the VST on are puny and soft. Use care when removing them. I ended up putting them back in with anti-seize and spraying the top of the VST with a light coat of Fluid Film as I never want to have an issue with them.

The "filter" on the bottom of the high PSI pump is nothing more than a small screen in a plastic gizmo which slides onto a fitting on the HI-PSI pump. No need to replace it, just give it a shot of Carb cleaner if the screen is still viable.

The High and Low PSI pumps are crazy expensive. Shop carefully when the time comes to replace them.

[JerEazy1]

thanks - ordered new VST gasket and filter, 2 new LP pumps and gaskets as well (2 new control cables too as a precaution - but that's in another post).

Will tackle that fun next week when the parts arrive

[TownsendsFJR1300]

not really any similarity to the F150.
the OX motors are way easier.

Being an antique engine, the pic's on that link should make things easier for him..

[rodbolt17]

not really any similarity to the F150.
the OX motors are way easier.

[TownsendsFJR1300]

VST needs some extra reviews.

For an F150 but very similar:

F150 VST filter replacement - The Hull Truth - Boating and Fishing Forum




.

[JerEazy1]

you are over complicating this.
the VST is simply a small gas tank.
it is held to the block with 3 6mm bolts.
the tank halves are held together with about 8 screws.
unbolt it,remove the screws and the tank comes apart.
if the gasket does not swell ,reuse it.

Will give it a go. Thanks for the guide

[rodbolt17]

you are over complicating this.
the VST is simply a small gas tank.
it is held to the block with 3 6mm bolts.
the tank halves are held together with about 8 screws.
unbolt it,remove the screws and the tank comes apart.
if the gasket does not swell ,reuse it.

[JerEazy1]

don't over complicate this.
lift pumps are two bolts,two wire ties and a gasket if nessasary.
VST is stupidly simple.
two ways.
you can remove all but two screws then remove the mounting bolts and access the last two or remove the tank.
if you remove the tank use ONLY the correct clamps.
no worm type.
no tutorials needed.

Once I had eyes on the LPs I thought they would be pretty straightforward.

VST needs some extra reviews.

[rodbolt17]

don't over complicate this.
lift pumps are two bolts,two wire ties and a gasket if nessasary.
VST is stupidly simple.
two ways.
you can remove all but two screws then remove the mounting bolts and access the last two or remove the tank.
if you remove the tank use ONLY the correct clamps.
no worm type.
no tutorials needed.

[JerEazy1]

Great - thank you for the info on the tank. Now I just gotta pick up that portable and some more RF.

Did a whole set of maint yesterday - noticed quite a bit more that's going to need to get done. The LP pumps are pretty corroded - so I'll probably aim to tackle them and the VST next. Will have new posts in a bit with other topics

[JerEazy1]

Thanks for the help - now all I need is an external tank and some
Ring-free!

I would really love a post or video on the VST and LP pumps.... the LPs look pretty corroded - so while im in the buying mood, I should replace em.

Oh and on a happy note - I noticed there is a temp sender installed on the starboard top of the block! Now I just need to chase down the wires and hook up a gauge

[TownsendsFJR1300]

2 oz per gallon is shock treatment, after that 1 oz per gallon. Don't overdoo, too much may change gas detonation point.

Incorrect... Regular use is 1 oz per 10 gallons . That's on the bottle
The shock treatment amount took me awhile to find that..

Shock treatment: 2 OZ per 1 gallon

Re the oil, the oil is mixed AFTER STRAIGHT fuel is introduced into the engine.
So a six gallon tank with the shok amount of RF is fine.

I run the RF regularly in all my engines (reg mix)...


BTW, for a 10HP chipper / shredder I couldn't get to idle low enough (years ago), I put quite a bit MORE RF into the 1 gallon tank as the machine ran WOT (working). After I was done, same tank, (no re-fill), a little over an hour, it idled down FINE... I did NOTHING else but stuff branches into the machine. Still starts on the first pull and idles as it should....(it's used 2-3 times a year)

[99yam40]

2 oz per gallon is shock treatment, after that 1 oz per gallon. Don't overdoo, too much may change gas detonation point.

I thought it was 1 oz per 10 gallons

[JerEazy1]

2 oz per gallon is shock treatment, after that 1 oz per gallon. Don't overdoo, too much may change gas detonation point.

Oh i wont be doing it in the main tank 120 ozs of Ringfree would be quite expensive and would be one helluva long shock treatment hahahaha

I see a portable tank in my future..... So question then - the 2-stroke oil comes from the engine mounted oil reservoir as opposed to being mixed in the tank.

So when making the external tank mixture I do not have to add any 2-stroke oil as long as i hook the fuel tank up to the main fuel line after the big blue filter because it's going to still pull oil from the on-board tank. Correct?