Yes...worth doing early to keep engine running at peak performance.
Ask the question on a VFR forum. Doh!
There are 4 (CR8EH9) plugs; 2 in the front cylinder and 2 in the rear cylinder.
Tom Yehya Racing (a kart site)have posted a service,and parts manual,under their technical section..
The VFR Waypoints on the VFR terminal area chart are used to guide VFR aircraft around the TCA. VFR makes it possible for light aircraft to fly without entering the space reserved for commercial aircraft and fast flying jets.
VfR Mannheim was created in 1911.
VfR Achern was created in 1907.
VfR Bürstadt was created in 1910.
VfR Neumünster was created in 1910.
VfR Döhren was created in 1906.
VfR Neuburg was created in 1926.
VfR Pforzheim was created in 1897.
VFR(aviation) Visual Flight Rules