change to premix. help

[cuenta]

I have planned to switch to premix
can only block the oil inlet?
and leave the pump in place or is necessary to remove
to put a block off plate
thank

seadoo 720.

 

[LouDoo]

You can leave the pump in place but to disable the pump you will need to remove the large nylon gear inside the intake manifold. You will also need to cap off the oil injection nozzles. Leave the oil tank in place and the oil line feeding the rotary gear and the return line in place.

I've grown weary of trying to talk people out of switching to premix, I think there are enough threads here for people to make their own decision.

You might want to get a block off kit from SBT.

http://www.shopsbt.com/mm5/merchant.mvc?Screen=SEARCH&q=seadoo+oil+block+off

Lou

 

[cuenta]

need remove the the manifold ?

 

[RebuiltSeadooBaffles]

To get to that nut on the gear yes

 

[cuenta]

:

just bought a 95 xp
but the guy told me it was premix
but I can clearly see that the oil pump and the lines are still connected

 

[LouDoo]

I don't know what to tell you. You don't need both. Is there oil in the tank? You need oil in the tank to lubricate the rotary valve gear, and if the pump is still functioning to lubricate the pump.

Lou

 

[cuenta]

the guy told me that the ski was premix
but the oil pump still connected
I'm confused
the guy lied to me
and do not want to fry the engine
fot this..

 

[LouDoo]

Well the only way, that I know, to be sure if the oil pump is still functioning is to remove the carbs., you'll see two small nozzles in the throat of the intake manifold. Remove the spark plugs, ground the spark plug cables, turn the engine over and see if there's oil coming out of the nozzles.

Lou

 

[ocod]

the guy told me that the ski was premix
but the oil pump still connected
I'm confused
the guy lied to me
and do not want to fry the engine
fot this..

Are you in Miami?
Lou has you on right track through.
You can't beat the one on one with pictures for reference...
:thumbsup:

 

[OldSchool]

I really don't know why so many were determined to bypass the oil injection. I swear on my kids, in the years that I serviced these things (1990-1997) I have never seen one of these fail. It was usually the guys who raced or the ones who just had to have their special, shiny aftermarket intake/rotary cover that simply defaulted to pre-mix.

I have tested it by grounding the wires, reaching down and moving the pump lever while turning the engine over, without moving throttle so that only oil will be delivered.

Then removing the rotary cover (leaving the carbs attached, cables and hoses) by taking out the 4 bolts that hold it on, then getting a look at the injection ends. The rotary valve should be good and oiled up on the surface too. I just found it easier on those 720's to get those 4 cover bolts on and off (one tricky one) than it was to remove the carbs and such. Heck, I used to remove the rotary cover to get the carbs off anyways.

 

[cuenta]

I check the gas in the tank
but I think the old owner used a red color 2 stroke oil &
I not sure if the gas is already with oil o not

 

[LouDoo]

So, if you're saying that the oil injection is working and you have premix in the tank, you can just add fresh gas to the premix and go ahead and run it. But it is important that you verify that the oil injection is working.

Lou

 

[cuenta]

I c
today I will remove the carbs,
to check the oil pump

can you tell me step by step to
remove the pump and put the block off plate

thank

 

[LouDoo]

This is not a hard job, if you can't figure it out download a service manual.

Lou

 

[cuenta]

start today
but thr carb bolt
are very hard to get them
still try.

 

[LouDoo]

Every SeaDoo owner needs a set of these.

http://www.harborfreight.com/6-piece-38-metric-ball-hex-socket-set-67883.html

Lou

 

[cuenta]

yes luodoo
I have the tool
but I think the old owner not
because damage 2 head-bolt