Yamaha Outboards 3P Service Manual, Page 79Get this manual
ENGINE IS HARD TO START OR WILL NOT START
Is there sufficient fuel in the tank?
Add fuel
Is the fuel dirty? YES Is the fuel-cock filter clogged-up? YES Is the fuel-cock clogged-up? YES Is the fuel-hose cracked or damaged? NO
Clean it(P3-8)
Clean or replace