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Hello guys
Is there a iridium spark plug to substitute those listed above for V8?

Dear friends
Does anyone know the part number of the iridium spark plug
that could substitute the ngk LKAR7C9 ?

Sorry, the engine didn’t arrive yet, just asking because I,ve changed my 300 proxs for a 300 r and nobody noticed me to adequate the pedal so I’ve blamed the 300 r because it wasn’t fast till I...

Hello Guys
I’m changing my 300 r and putting a 400r, wished to know if I can use the same pedal.
In that case I have to reprogram the software ?

Hello Guys
Just a question, is there any problem if I replace the niquel spark plug for a Iridium ngk in my 300 r?

In that case the 2.4 Helm is a better option than the 2.0?

Hello guys
I wished to know your opinion about mercury eletric steering installed in a 300r.
Boat is a Bullet 21. Is it preferable instead a conventional seastar pro or not?
thanks

Hello guys
What is your opinion about mercury eletric steering instead of a conventional like seastar pro
in a fast boat like Allisson or Bullet?

Hello guys



I have a new 300 R and have a question. Which is the minimum water pressure required in high speed to avoid
any malfunctions or damages in the engine( is a sportmaster)
thank you

Hello guys
Asking if somebody tried a Ron Hill cleaver 5 blades . I’ considering buying one but opinions are helpful

Thank you all

Dear friends
I have an old 1297C but it was working well. Last week it stops bottom reading. Other functions no problem.
I’ve disconnected the transducer and tried another and you can hear the tic...

Thank you

Dear friends
where can I buy a sportmaster lu to fit in my 300 proxs? Does the gear set from the torquemaster can be used or only the complete lu fit?

I have a 998c that worked perfectly those years. Yesterday tried to start it but nothing happens. Checked energy and cables but nothing wrong. The light buttons keep on but the display don’t even...

Hi, Guys
Does a sportmaster from the 300 xs may be installed in
a 250 proxs v8 ? I have one available in 1:62

Dear guys
Does the 250 SHO have a lambda probe in the exhaust sysyem?

Good tip, thank you

Ok, but when the gauge goes zero I raised engine and no water was flowing, just overheated steamed water

Dear Guys
I have a 250 SHO installed in my Stroker and since the begining I’ve had water pressure issues. Even with jackplate
totally raised down and mainteining 3800 rpm continuously the pressure...

Dear guys
I have a Stroker bassboat in Brazil with a brand new 250 SHO. Since the first day the water pressure gauge keep oscilating between 10/20psi and suddenly goes to 0. Then the alarm start...

I’ve changed my 250 sho by a new one last month. I’ve also notice some hp less than the old one. Does Yamaha
made some change in the ecu or exhaust in order to respect emission controls like car...

I’ve noticed some decreased in power in comparison with actual 250 sho and older ones.
Could it be due new co2 emission controls like diesel engines are obliged to do? Did they
restrict the...

Hello folks
could you experts tell me which is the usual engine temperature in
a 250 g2, iddle and running with normal water pression?

Thank you