Part 4 - Check Valves
OK I am out of my league now, I am not a mechanic.
Try and clean as much as you can with a rag and compressed air around the Valve Cover and above it. I think if I was to do this again I would wash the bike a second time with the tank off.
KTM Feeler Gauges:
Remove the 4 Bolts holding the Valve Cover.
You need to lever the hose off that is connected to the top of the Valve Cover. It is not held on with anything and comes off easy with the help of a screw driver.
Bike in 6th gear and spin the wheel till the drill mark on the head lines up with the drill mark on the Cam Gear (Ladybergs tip, thanks). I did this without taking the spark plug out, but you are supposed to take it out. You can see the 2 marks in this picture:
Here is a picture of the inlet valves. They are the 2 Valves on the top of the head.
Here is a picture of the exhaust valves. They are the 2 Valves towards the bottom of the head.
Note, in the photo you can see the Oil Strainer in between the Valve Springs. This is the Oil Strainer that goes in the Banjo Bolt in the Head that you need to clean when changing your oil.
There should be a gap in between the Valves and the Rocker Arm as shown below.
The Gap should be measured at 20 Degrees Celsius:
INLET = between 0.10mm and 0.15mm
EXHAUST = between 0.12mm and 0.17mm
So here is a good inlet Valve within spec. The 0.10mm fits and the 0.12mm does not fit.
Mine Valves measured:
At 11 Degrees C (It's bloody cold at Galston today)
Left Side Inlet 0.10mm Feeler Gauge Fitted and 0.12mm did not fit. Within Spec
Right Side Inlet 0.12mm Feeler Gauge Fitted and 0.15mm did not fit. Within Spec
Left Side Exhaust 0.10mm Feeler Gauge Fitted and 0.12mm did not fit. OUT OF SPEC
Right Side Exhaust 0.12mm Feeler Gauge Fitted and 0.15mm did not fit. Within Spec
So my Left Side Exhaust is tight by 0.02mm. Do I need to change my Shim?