NGK BR8HS with a .032" (0.8mm) gap
In the center of the head (on top of the cylinder).
under the gas tank
you have to take gas tank off.
the 50 mark
0.028"
The required spark plug for a 50 hp outboard engine would depend on the make, and year model of the engine.
.40 thousands and if its a champion OE spark plug its .50 thousands
.50
KTM 50 tops out around 50-52 mph my 06 ktm 50 hits 55-60mph
You have a 1999 KTM 50 SXR.
no
NGK plug BP4HS - Gap for PW 50 is 0.6mm.