evn_05
Junior Member
Hey all,
Doing my winter maintenance in my shop this weekend. I spent the morning pulling all the jazz off the top of the motor to do the valve check. I did not pull the tank, actually just suspended it from a few eyelet hooks I have in my ceiling by a few ratchet straps.
In pulling the radiator I just drained all my coolant as it was brownish and smelled bad. Likely the original is my guess. The bike is right around the 26k mark for the valve check.
I have a fair amount of tools and a semi-heated garage so this went pretty well overall. I did have to buy a set of feeler gauges but I am sure I will find plenty of uses for them now.
So here's the skinny: All my valves were within spec except for two exhaust valves. Both my outside exhaust valves on cylinder #1 and #4 were loose. So that would be, if you were sitting on the bike, the left on #1 and right on #4. I pulled .38mm and .35mm on these two valves.
So they are loose, which with my past experience with 4t dirt bikes is much better than tight. I do, however find it odd that both outside valves are the ones that are out of spec. Not sure if there is a known machining issue with the cams on these bikes, specifically the exhaust cams? Or if it is just a pure fluke that those are my winners.
Now the decision is looming as whether I pull the cams and re-shim these guys are button it back up and call it a day...
Any thoughts or input would be helpful.
Doing my winter maintenance in my shop this weekend. I spent the morning pulling all the jazz off the top of the motor to do the valve check. I did not pull the tank, actually just suspended it from a few eyelet hooks I have in my ceiling by a few ratchet straps.
In pulling the radiator I just drained all my coolant as it was brownish and smelled bad. Likely the original is my guess. The bike is right around the 26k mark for the valve check.
I have a fair amount of tools and a semi-heated garage so this went pretty well overall. I did have to buy a set of feeler gauges but I am sure I will find plenty of uses for them now.
So here's the skinny: All my valves were within spec except for two exhaust valves. Both my outside exhaust valves on cylinder #1 and #4 were loose. So that would be, if you were sitting on the bike, the left on #1 and right on #4. I pulled .38mm and .35mm on these two valves.
So they are loose, which with my past experience with 4t dirt bikes is much better than tight. I do, however find it odd that both outside valves are the ones that are out of spec. Not sure if there is a known machining issue with the cams on these bikes, specifically the exhaust cams? Or if it is just a pure fluke that those are my winners.
Now the decision is looming as whether I pull the cams and re-shim these guys are button it back up and call it a day...
Any thoughts or input would be helpful.