1990 RM 125 CARB HELP

Craig B
Profile picture for user Craig B
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1/27/2013
Location
Bayville, NJ, USA
Craig B
Edited Date/Time 1/30/2013 6:10pm
Hi all, just joined the site. I picked up a 90 RM 125 from a customer for free and am looking to fix it up a bit. It needs a carburetor and I was looking at a TMX.35 MM. I know these came on newer 2 strokes, but does anyone have jetting info for the older bikes like mine. The bike has a PSI pipe and V-force 3 reeds. Thanks for any help.
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718
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6/24/2012
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Spring Branch, TX, USA
718 1/27/2013 10:37pm
1/27/2013 10:37pm
Craig B wrote:
Hi all, just joined the site. I picked up a 90 RM 125 from a customer for free and am looking to fix it up a...
Hi all, just joined the site. I picked up a 90 RM 125 from a customer for free and am looking to fix it up a bit. It needs a carburetor and I was looking at a TMX.35 MM. I know these came on newer 2 strokes, but does anyone have jetting info for the older bikes like mine. The bike has a PSI pipe and V-force 3 reeds. Thanks for any help.
I would start with a 370-380 main and 50 pilot. This will most likely be rich. Better rich than lean. Set air screw at 2-3/4.
You can then fine tune it and jet it as needed from there.
Craig B
Profile picture for user Craig B
Posts
11
Joined
1/27/2013
Location
Bayville, NJ, USA
Craig B 1/29/2013 3:42am
1/29/2013 3:42am
Thanks for the info. Does anyone sell pre-jetted carburetors for 2 strokes?
xnationalwrench 1/29/2013 5:05pm
1/29/2013 5:05pm
SUDCO sells prejetted carbs so have your dealer contact them for you for pricing.

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project racer 1/30/2013 6:10pm
1/30/2013 6:10pm
Pre-jetted = hopefully in the ball park jetting. Winter time jetting that is close will be rich come the summer months when the temp, humidity goes up, and the air gets heavy. And when you lean things out for the summer, keep an eye on the jetting when the cool weather comes back around the next fall.

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