yz450f starting problems...please help!
Posted 17 March 2011 - 08:13 PM
-Thanks in advance
Posted 17 March 2011 - 08:57 PM
Posted 18 March 2011 - 01:22 AM
Posted 18 March 2011 - 06:30 AM
Edited by nor-calYZ426, 18 March 2011 - 06:50 AM.
Posted 18 March 2011 - 07:16 AM
how do i check how many turns out the fuel screw is?
do you know what sizes jets they put in yours?
Your '06 should probably be jetted with a 45 pilot and a 168 main as starting point. Your idle speed may need to be raised to help it start better, too.
When staring an '06 cold, be sure you have pulled the "choke" (black knob, left side of carb) out, and that you twist the throttle from closed to half 2-3 times to get a prime from the accelerator pump. If it doesn't start in two kicks with the throttle CLOSED, give it a couple more twists. If it doesn't start on the next one with the throttle closed, crack the throttle open JUST barely above idle and hold it there for the next kick.
Hot starting is different; never twist the throttle first.
Posted 18 March 2011 - 07:58 AM
Posted 18 March 2011 - 08:12 AM
Dipping is also not beneficial to the TPS. You could remove the TPS for cleaning, but readjusting it on an '06 is a huge PITA, so don't unless you have to.
Posted 18 March 2011 - 12:51 PM
Posted 18 March 2011 - 02:16 PM
- The easiest way to remove and reinstall the carb is to do it my way:
- Remove the seat, side number plates and muffler.
- Remove the 4 bolts holding the air box to the sub frame, leaving the air box clamped to the carb.
- Remove the 3 bolts holding the sub frame and slide the sub straight back off of the air box.
- Remove the air boot from the carb, unbolt the top of the shock, and remove the carb.
To reassemble, install the carb, install the shock, clamp the air box to it, slide in the sub frame, and put the bike back together. Trying to get the air boot in place around the shock while it's bolted to the sub frame is just too big a PITA.
Posted 29 March 2011 - 02:27 PM
Posted 30 March 2011 - 06:11 AM
Posted 30 March 2011 - 08:17 PM