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1985 RM250 Maintenance
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Posted by: 2BNVED
Hey I just finnished rebuilding an old 1985 rm250. I just need to know what spark plug i should run, what fuel mixture, and how much oil to put in it.. is there a plug u can pull for ur level that im just overlooking?
Thanks any reply is much appreciated
Posted by: ziptiedEXC
NGK B8EGV
gap .020-.024 in.
torque 18-22 ft.-lb.
trans oil 800 cc or 1.7 pt.
fuel mixture 20:1
source Clymer
Posted by: 2BNVED
i cant thank u enuf for the quick response 
Posted by: 2BNVED
WOO HOO! haha i just got in from trying to get that hog going and NO SPARK! wow... took the old kill switch off, traced and cleaned all wiring connections. I couldnt get that plug that ziptied listed. No shops are open so i just grabbed a b8es. It cant be THAT picky can it? I dont even get a shock from holding it. I also cleaned the mag an stator.
And one more question.. Is the coil, wire and spark plug boot all one peece? I woodnt mind figurin that out b4 i rip it apart not knowing :P
THANKS AGAIN FOR ANY RESPONSE!!
Posted by: 2BNVED
HOOOOO WEE! well heres the skinny.. i wired up a new spark plug boot and SPARK! hah so i go for my maiden voyage, push starting it cuz theres no way she'll start with the kick starter, then i eventually loose cluth grab AND HERES ONE FOR THE RECORD! haha You'll like this.. i know my neighbor did !
The guy i bought it off lost the orignal plastic plug for the oil(keep in mind im very new with bikes) and had an aluminum cap that said SAE 10w-40!!!!!!!!! AND GUESS WUT I PUT IN lol he musta got it off a lawn mower im guessing 
So a long story short i need to know wut kinda oil im suppose to run in this thing, i know its sum kinda tranny oil! trust me, i scratched my head for a couple minutes when i read the cap at first
Posted by: ziptiedEXC
Any motor oil will work, you can use 10w-40 if you like.
Posted by: wirefryer#85
I run Valvoline 20-50 in my '81' tranny and NGK B8ES plugs at.035" gap.
I do foul plugs, but after years of experimenting have learned that the 12$ race plugs will foul just as fast as the $2.19 NGKs', mostly due to the weakass ignitions they had back then.
I also run a 50:1 mix of Yamalube 2 R with VP C12 or Power 110 race gas, fuel worth every cent! The Yamalube will carbon up a bit but I don't roast the big end rod bearing like I did when I ran Klotz, go figure 
Tim
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