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carb jets

Thank you for your help with my 87 570cc yamaha,
after I cleared the jets out, it now runs\starts like a champ!!
What is the rule on jet sizes as far as altitude?
do you need smaller jets the higher you go?
Who sells them mail order?
Thanks for the help
by fishsled
August 9th, 2001, 12:30 am
Forum: SnowmobileNews Forum
Topic: carb jets
Replies: 2
Views: 923

my poor yamaha

Hello, After Re-building the top and bottom end on my 87 570cc, my sled runs poorly, it has good compression, but starts hard and has very little throttle response, it also backfires some...Where could I have gone wrong?? any advise would be helpfull, Thanks!!
by fishsled
August 6th, 2001, 7:27 am
Forum: SnowmobileNews Forum
Topic: my poor yamaha
Replies: 6
Views: 1124

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