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Old 09-26-2013, 11:38 PM   #1
shawy39 OP
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Joined: Sep 2013
Oddometer: 1
yz400f

Hi I have recently bought a 99 yz400f with only a little compression,
I have read a few forums which intercate that it is a common fault for the valves to stick open so I wipped it all of pisten is fine done a pressure test and yep 2 valves were slightly open so got them re seated and cleaned up what I need to no now is what are the torque setting for the head? any help would be great.

chris
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Old 09-26-2013, 11:44 PM   #2
DakotaRon
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Joined: Jan 2012
Location: Minot, ND
Oddometer: 12
Torque Values

Be sure and apply moly lube to the bolt threads and washers before you torque the head. Then torque to 34 ft/lbs using a criss cross pattern sequence. I am glad you found it an easy fix. Happy Roosting!
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Old 09-27-2013, 04:21 AM   #3
PineyMountainRacing
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Joined: Jul 2008
Location: SW Florida / Western NC
Oddometer: 1,679
I've got the 99 WR400F, what a hoot. All it's lacking is a tag!
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Old 09-27-2013, 08:37 AM   #4
dougfromindy
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Joined: Aug 2008
Location: Indpls, IN Lexington, MI
Oddometer: 1,958
yee haww it rocks

great trail bike with big power
my spark plug blew out, no more threads, just fixed it
i got lighting, baja designs 180w ext stator set up
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