Bigger start jet. Is there a downside?


5 replies to this topic
  • AUS_WR450

Posted June 01, 2005 - 01:56 AM

#1

Gidday to all the WR450 jetting guru's.I am thinking of going up to a #72 starter jet on my aussie 04 wr450. It now takes a few more kicks to get it started when cold, now the temperature is dropping. It used to be first kick (or push of the e/start)

Is there a downside to going too big on this jet. I am aware that it controls the choke circuit only, but was wondering what would be the symptoms of it being too rich.

FYI, I run a full FMF exhaust system, 170MJ, 48PJ, #40leak jet and F/S 2 & 3/4 turns out.

Nigel

  • 450high

Posted June 01, 2005 - 02:26 AM

#2

No down side , just easier starting when cold.I was only able to get a 70 as i was told yamaha australia didn't bring a 72 in ?

  • AUS_WR450

Posted June 01, 2005 - 03:38 AM

#3

Thanks for the info, fellow aussie :)

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  • JeffWR

Posted June 01, 2005 - 04:54 AM

#4

Anybody know what the stock starter jet is on an '05 WR450 is?
Thanks for the info, Jeff

  • pappabob

Posted June 01, 2005 - 07:52 AM

#5

the stock starter jet is a # 65

  • pappabob

Posted June 01, 2005 - 08:01 AM

#6

the stock starter jet fore the 05 yz is a # 72




 
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