yamaha help

[ilovemja]

hi i have a 1984 yamaha tri moto 175 2 stroke, but i have a few problems first one is what is the proper spark plug to be in it? and at low rpms it bogs out and has no power but at high rpms it works excellent, what is this caused by, thanks

[Danthestuntman]

i have a 1985 200 and i have a ngk spark plug and about the boggin out it might be trailprotrailpro float in trailprotrailpro carb

[ilovemja]

but whats the number on your spark plug?

[trikerider2oo7]

the plug number is BP7ES