Spark Plug on 17hp V-Twin Kawasaki?

[Andrews Lawn]

i just bought a used 52' Wright Stander today and it came with no owners manual so i thought someone else might be able to help me with some things on it

First: What spark plug should be in the 17 hp kawa?

Second: I know u are supposed to use Mobil 1 synthetic oil in the hydros but what weight is reccommended by Wright? 20w-50?

i appreciate any help.

[Premo Services]

I have a 17 kawi and use an RCJ8Y plug.

As for as the hydros on your machine I don`t know. Mabey their web site has a manual that you can download. Good luck with your machine!!!!:D

[ohiolawnguy]

RCJ8Y here also. bobcat reccoends 3 different types of fluid for their hydros, and we use the 20w-50 as our choice.

[Guardian]

I am glad this question came up. Yesterday I pulled mu plugs on my 17 KAW to buy new ones and have had trouble finding the same ones. MIne are Bosch RO 091. Several places can't find it. They say the manual calls for other plugs. What brand plug is the RCJ84?

[awm]

pull the champions and put in a set of the appropriate nkg plugs.
see if u can hear the difference that i can.

[LawnCrafters]

I agree. Use the NGKs. They make more of a difference than you'd ever think a spark plug could.

[Andrews Lawn]

Thanks for the replys:

Where should I go to buy NGKs? Does anybody know the number on those? And also, does anyone know about the hydro fluid in the Wright standers?

[GAM321]

I get NGK at NAPPA if they dont have they get them.

[LawnCrafters]

Most commercial lawn equipment stores sell NGKs. I'll check the number on mine in the morning. But you can also just give them the Champion number and they'll cross reference it.

[Andrews Lawn]

I pulled the spark plug out of my 17hp kaw. today and there was a CJ8Y in there. Now I assuming that it is not the same as a RCJ8Y, it looks like a trimmer spark plug . Should I not even be running the mower with the champion CJ8Y in it? I also pulled the plugs on my Shindaiwa blower and trimmer and they had CJ8 in them (also bought used).

I'm confused because why would a mower have the same size plug as a trimmer?

[Richard Martin]

I think the "R" in RCJ8Y stands for resistor. That means that the plug is a noise suppresor type of plug in that it doesn't make a nearby radio whine. The 2 plugs are interchangable.

[jaybird24]

Yeh- go with the Ngk-never had one foul on me like champions do. Also I think MObil1 only has a 15w50 synth and that should be fine.

[sdwally]

In a Nippon Denso (ND) it would be a W16EX-U gapped at 0.030".

W - 14mm thread
16 - heat range
E - Tapered seat, reach of 0.708"
X - Extra projected insulator nose
-U - U-grooved ground electrode

A Champion RCJ8Y crosses to a W20MP-U10. This is a colder plug that is compact(short in overall length) with the extra projected insulator nose and is pre-gapped at 0.040". The correct Champion plug should be a N12Y which is a direct cross of a ND W16EX-U or a Bosch W8DC. NGK should be a BP5ES.
This should give you a few options for spark plugs. I recommend either NDs or NGKs. Never had much luck with Champions in small engines.

[LawnCrafters]

Yep...BP5ES, that's it. Sorry I meant to check sooner.