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Suzuki 2 Stroke FAQ

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This will be a compilation of threads that contain many of the frequently asked questions about the yellow smokers.

TT OEM Parts Fiche (A good source for assembly schematics and parts)

This is just a start, if you know of something that should be added, post up a link to the thread or PM me and I'll get it added to the index. This FAQ will be as good as you guys make, it's your ideas and knowledge.🤣

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It's only going to be as great as you guys make it, I'm just the "secretary" doing the "filing" work, since have owned a grand total of 0 yellow smokers.

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There are always questions about "What does this fit?", "Can I use this part?", etc. I find comparing the OEM part numbers for various models very helpful.

How about a link to the TT OEM parts fiche, so people can look up parts and see what goes where, and what fits what?

http://shop.thumpertalk.com/oem.asp

Thank you!

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We need to add a good thread about how to rebuild a top end. That question is asked alot around here.

Someone either post one with pics or find one, and I'll add it to the index.

The more pics the better, and if possible, put in torque specs and such.

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http://www.youtube.com/profile?user=RockyMountainATVMC&view=videos

Multiple videos about top end, bottom end, clutch, fork seals etc

Suspension setup

1989-1995 specs

Front and rear tires all models: 10-16psi

Transmission oil:

-Rm80 = 550 mL

-Rm 125, 250, Rmx250 = 650mL

Cooling system capacities:

Rm80 = 550 mL

Rm125, 89-90 = 800mL

Rm125, 1991-on = 900mL

Rm250, 89-91 = 850mL

Rm250, 92 = 1100mL

Rm250, 1993-on = 900mL

Rmx250, 89-91 = 850mL

Rmx250, 1992-on = 1100mL

Radiator cap pressure relief = 16psi

Air screw adjustment turns from fully seated (closed):

Rm80, 1989 = 1 3/4

Rm80, 1990-on = 1 1/2

Rm125, 1989 = 1 3/4

Rm125, 90-93 = 1 1/2

Rm125, 1994-on = 2

Rm250, 89-93 = 1 1/2

Rm250, 1994 = 1 3/4

Rm250, 1995 = 1 1/2

Rmx250, 89-91 = 2

Rmx250, 1992 = 1 1/2

Rmx250, 1993-on = 1

Mixing ratios:

Rm80 1989-on = 20:1

Rm125, Rm250, Rmx250

1989-1991 = 20:1

1992-on = 32:1

Torque specs:

Cylinder head nuts:

Rm80, Rm125, Rm250

1989-1992 = 19-22 ft-lb

1993-on = 16.5-20 ft-lb

Cylinder nuts:

Rm80, Rm125 = 16.5-20 ft-lbs

Rm250, Rmx250 = 26-29 ft-lbs

Magneto flywheel rotor nut:

Rm80, Rm125, Rm250 = 22-29 ft-lbs

Rmx250, 89-92 = 22-29 ft-lbs

Rmx250, 1993 = 66-73 ft-lbs

Rmx250, 1994-on = 59 ft-lbs

Clutch sleeve nut:

Rm80 = 51 ft-lbs

Rm125, Rm250, Rmx250 = 66 ft-lbs

Number of clutch plates and discs:

Clutch plates:

Rm80 = 4

Rm125 = 7

Rm250 = 8

Rmx250, 89-91, 1994-on = 7

Rmx250, 92-93 = 8

Friction plates:

Rm80 = 5

Rm125 = 8

Rm250 = 9

Rmx250, 89-91, 1994-on = 8

Rmx250, 92-93 = 9

Fork oil levels:

Rm80 = 359mL

Rm125

89 = 656mL

90 = 452mL

91-92 = 610mL

93 = 650mL

94 = 455mL

95 = 435mL

Rm250

89 = 408mL

90 = 447mL

91 = 619mL

92 = 615mL

93 = 656mL

94 = 460mL

95 = 440mL

Rmx250

89 = 408mL

90 = 452mL

91 = 623mL

92 = 626mL

93-on = 653mL

Carburetor Specs

Rm80 1989 - on

Type: Mikuni

Model

1989-1991 = VM28SS

1992 - on = TM28SS

Identification No. 03B00

Main jet = 210

Main air jet = 2.5mm

Needle jet = p-4

Jet needle = 5DP39-4th

Pilot jet = 30

Float Height = 17.2 + or - 0.5mm

Rm125 1989 - 1992

Type: Mikuni

Model

1989-1991 = VM35SS

1992 - on = VTM35SS

Identification No.

89 = 27C00

90 = 27C10

91 = 27C30

92 = 43D00

Main jet

89 - 91 = 330

92 = 320

Main air jet (1992 only) = 2.5mm

Needle jet = R-1

Jet needle

89-90 = 6AEJ2-65-3rd

91 = 6AEJ2-65-4rd

92 = 6AEJ6-66-3rd

Pilot jet

89-91 = 55

92 = 50

Float Height = 14 + or - 1mm

Rm125 1993-on

Type: Mikuni

Model = NTM36SS

Identification No. = 43D20

Main jet = 360

Needle jet = R-1

Jet needle = 6AEJ0-63-3rd

Pilot jet = 55

Float Height = 14 + or - 1mm

Rm250 1989-1992

Type: Mikuni

Model

89-90 = VM38SS

91-92 = NTM38SS

Identification No.

89 = 28C00

90 = 28C10

91 = 28C20

92 = 28C40

Main jet = 370

Needle jet = R-1

Jet needle

89 = 6AEJ1-62-3rd

90 = 6AEJ1-63-3rd

91 = 6AEL1-60-3rd

92 = 6AFL1-60-3rd

Pilot jet

89 = 55

90-91 = 50

92 = 45

Float Height

89-90 = 14 + or - 1mm

91-92 = 16 + or - 1mm

Rm250 1993-on

Type: Mikuni

Model = PJ38

Identification No. = 28E10

Main jet = 180

Jet needle

93 = R1471NS=3rd

94 = R1469MS=2rd

95 = R1470NS=3rd

Slow jet

93 = 45

94-95 = 52

Float Height = 16 + or - 1mm

Rmx250 1989 - 1992

Type: Mikuni

Model

89-90 = VM38SS

91-92 = TM38SS

Identification No.

89 = 05D00

90-92 = 05D40

Main jet = 260

Needle jet = R-1

Jet needle = 6AAY1-67-3rd

Pilot jet = 45

Float Height = 16 + or - 1mm

Rmx250 1993-on

Type: Keihin

Model = PJ38

Identification No. = 29E2

Main jet = 200

Slow jet = 60

Jet needle = R147M1L-3rd

Float Height = 16 + or - 1mm

Hopefully these specs will come in handy 😛

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This will be a compilation of threads that contain many of the frequently asked questions about the yellow smokers.

Jetting

TT OEM Parts Fiche (A good source for assembly schematics and parts)

This is just a start, if you know of something that should be added, post up a link to the thread or PM me and I'll get it added to the index.:excuseme:

Learned a lot about jetting...that information was needed.

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Where did you find all of these specs? I just picked up a 2001 RM 80 and I'm looking for the premix ratio. 20:1 seems pretty rich but I'm not that familiar with 2 smokes.

One other question, it has the stock muffler which doesn't have a spark arrestor. What are my options?

Thanks

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Where did you find all of these specs? I just picked up a 2001 RM 80 and I'm looking for the premix ratio. 20:1 seems pretty rich but I'm not that familiar with 2 smokes.

One other question, it has the stock muffler which doesn't have a spark arrestor. What are my options?

Thanks

too rich!!! Mix 35-40:1 depending on your atmosphere and riding style

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Define average mixture.

People run different mixtures depending on their displacement, jetting capabilities and riding style/terrain.

32:1 I have found to be very capable to lube the top-end but that being said, if I owned an rm80 I would go with the service manual over my own opinion.

Just my opinion :doh:

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