Have 15 hp 4 stroke Yamaha. My question is how to tighten the steering on the motor

SOURCE: 4 stroke Yamaha 50HP -Runs rough at all throttle levels

If it has the old points system you will need to set the points also adjust the carburatior screw the screws all the way in and back out 2 1/2 turns then get it to run turn the air mixture screws till it runs smooth. you want it slightly lean then enrichen it slightly, afterword shut the engine down and look at the plugs if they are gray black they are ok. good luck.

SOURCE: 2003 yamaha 115 outboard motor that dies when

I would check your fuel lines from the tank all the way to the fuel pump. It seems that you might have a pinched line somewhere. You can also bleed the fuel rail with the schrader valve on the end of the rail. If that wont fix it then you probably have a weak fuel pump.

SOURCE: yamaha outboard starting

New plugs and service

SOURCE: i'm wondering if my 2003 yamaha TTR 125 is a 2

Hi and welcome to FixYa,

It uses a 4-stroke engine.

Good luck and thank you for asking FixYa.

SOURCE: i have 30 hp two stroke pull start yamaha outboard

yam water pumps are clever the offste centre causes the pump vanes to flex during rotation and at low RPM you have a displacement type pump, at high RPM water pressure forces the vanes to flex inwards and the pump becomes centrifugal, you can fit the impellar either way up so you cant fit it wrongly make sure your gaskets are ok and that the delivery pipe to the power haed is not leaking (try a hose on it) also make sure the little woodruff key or on some models the pin through the drive shaft which turns the pump is fitted ok, not much else that can be wrong!