Service bulletins for Yamaha ( 1988 - 1992 ) snowmobile ?

[Lasse]

Service bulletins for Yamaha ( 1988 - 1993 ) snowmobile ?

Hello !

I'm trying to find Service bulletins for Yamaha ( 1988 - 1993 ) snowmobiles ?

Were can I find that ?

HELP !


.

 

[Vmax540]

Some models will show a list of bulletins on the parts break down. http://www.yamaha-motor.com/sport/parts/home.aspx

 

[Lasse]

Some models will show a list of bulletins on the parts break down.
http://www.yamaha-motor.com/sport/parts/home.aspx

Maybee I'm stupid but I do not know were to look for them... / I can not find them...

Please help me out on this one....

I'm looking for service bulletins for all models of Exciter 570 ( 1988-1993 ).


.

 

[Vmax540]

They are on the list as "Technical" bulletins for models like the 81 SRX & 83 Vmax but......I cannot find them for the Exciter in which we all know from the 87 butterflies to the roundslides of the 1988-89's had jetting updates and a airbox update. B.T.W. I have a complete O.E.M. Yamaha jetting update kit in the package if this can help ?

 

[Lasse]

They are on the list as "Technical" bulletins for models like the
81 SRX & 83 Vmax but......

I cannot find them for the Exciter in which we all know from the 87 butterflies to the roundslides of the 1988-89's had jetting updates and a airbox update.

B.T.W. I have a complete O.E.M. Yamaha jetting update kit in the package if this can help ?

I helping a friend out with his wifes Exciter 570-I ( 1989 ).
And my "old" memory ( 39 years ) tells me that way way way back I have read about a Service bulletin / Jetting update for the ones that have the heated Mikuni VM-38 carbs.

Sorry to say... but it would probably not be economical to ship your excellent jetting update kit over the pod to SWEDEN

I would really apriciated If you could tell me what the jetting update consists of and the airbox update !!!

Please help me out !


.

 

[Vmax540]

Hope this helps. Ex. Carb Mod Kit #90891-50109
MJ 320
NJ P-6
JN 6FL68
1 Hose 450mm
2 Hose 340mm
6 Clip
2 Bearing (Plug)

 

[Lasse]

Hope this helps.

Exciter 570-I ( 1988-1990 ) Carb Mod Kit #90891-50109
Main Jet : 320
Needle Jet : P-6
Needle : 6FL68
1 Vent Hose : 450 mm
2 Vent Hose : 340 mm
6 Clip
2 Bearing (Plug)

THANX !!


Is the Needle Jet of the "166" or "480" series ?

Do you have any assembly/mounting instruction ?

...Or should I use the instructions from PSI or RPC about how to rejetting the ( 88-90 ) Exciter 570 carburetors ?



.

 

[Vmax540]

Needle jet # is 480 P-6