Adjusting Valves

[JabberJaw]

I was reading in the tech section on how to adjust your own valves. But I have one question. What size of wrench do I need to remove the valve adjustment caps?

[400ex Magnum]

I used a cresent wrench, but I seen in a post in the Open forum that a guy said a 15/16 end wrench will work.

[knighttime]

Yeah I used a crescent wrench also. I was very surprised how loose the covers were when I removed them. I would guess it's a metric socket size though.

[crday98]

the correct size is 24 mm.but you can get away w/ a 15/16 im sure.

[JabberJaw]

Someone also said the bike should be warm? Does anyone know if this is true?

[400ex Magnum]

The service manual recommends that the engine be cold when adjusting the valves.

Don't overtighten the valve caps, they will break apart.
I did this on a XR350 once.
John

[JabberJaw]

Ok, I took it all apart, lined up the 'T' and checked everything out. The valves did not need any adjustment. I loosened one and adjusted it in and out a little to get the feel of making changes, but ended up putting it right back where it started.

Is it normal to not have to adjust the valves any? I was expecting to have to make some adjustment. This is the first time the valves have been checked, the bike is 4 months old, and I ride alot.

I want to thank the person who took the time to write up the directions on adjusting the valves.

[400ex Magnum]

Jabber Jaw

I just checked and adjusted my valves after approximately 50 hours of use. I only had to adjust 3 of the 4 valves and the adjustment was VERY small. I woundn't worry about having not to adjust the valves. I would be very worried if they were way off after this much riding.