Why does Mercury 60 HP 2 cycle have gas in oil reservoir?

Any outboard 2 cycle after 1965 will run on 50:1 approx 500ml or half a quart per 5 gallon tank.

Sorry... Earl Soderlund,

The first thing that comes to mind... (without any SPECIFICS
from you, make, model, year... etc.)... is the two cycle syndrome...

4 cycle engines generally have their own crank-case-oil and can run with untreated gasoline...

2 cycle engines need 2 CYCLE OIL to be MIXED with their fuel...!!!

Some folks see an engine... put in GASOLINE and expect it should run.

The most common outcome is friction heat causes heat, abrupt stop... and a COOL DOWN period... before these ENGINE DAMAGE cycles can resume.

Each occasion DOES INDEED damage the engine.

Include the make & model...

or better yet look it up yourself on the internet... COMBINED with the TWO-CYCLE oil MIXTURE recommendation...

You engine can then be tuned and adjusted and give years of happy service.

Hope this helped.

Amazon com Husqvarna 2 6 oz Low Smoke Formula 2 Cycle Engine Oil 6 Pack...


Amazon com 2 cycle boat motor


2005 Mercury 50 HP 2 cycle 3 cylinder Outboard Trim Tilt Motor

50/1 500 ml to 25 litres 1 pint to 5 gal

clean carbs or injectors and fuel filter and tanks !

the primer going flat indicates that the fuel is getting a vacuum in the system
the most obvious place is the vent in the fuel tank cap not being unscrewed to allow air in as the fuel is being used or that vent hole is blocked or rusted up
if by chance you have being using E fuel, it is now known that ethanol attracts water and separates from the fuel
that water attraction rusts tanks , corrodes alloy parts and destroys rubber hoses
it is especially not recommended for use on marine vessels and outboard motors
so the problem could be a stack of rust in the tank blocking off the inlet line

2 cycle, 50:1

Those motors have a sensor on the oil pump drive gear that senses the oil pump drive shaft spinning. That sensor could be going out giving a false code. You can take off the oil line exit on the pump and crank the motor up for no more than a minute to check for oil flow. It won't be much at all....a dribble is all you can expect on idle. The most common problem is the oil tank on the motor itself or the sensor probe in the tank. The float can fall off giving a false signal as well. Make sure the cap and hoses are tight on the remote oil tank as the motor pressurizes the tank to push oil to the motor reservoir.

Are you mixing regular motor oil in the fuel? Doesn't this bike have a reservoir for 2-stroke oil? You must use 2-stroke oil in that reservoir. Buy it online if you can't find it locally.

You can seize the bearings real quick with starting fluid. You found out it has spark. Now you need to find out if you are getting fuel. Some of the gas tanks have a strainer and you need to pull the gas gauge from the tank and check the bottom of the tube for the strainer. If it is clean follow the fuel line up into the motor to the fuel pump. There may be a strainer inside the pump. If this is clean reassemble everything. With the gas line disconnected from the motor pump the bulb. Use a ballpoint pin on the checkball and see if gas will flow. Reconnect everything and pump the bulb, it should remain filled and hard. Now choke the motor and pull the starter. It should try to start. Aside from fouled plugs and bad gas if it hits with starting fluid it should run.

Dont have the manual in front of me...recollect that there's two types of warnings. The pulsating warning is oil (starts with 30 minutes of oil left) or the fuel filter (or sperator, something like that) may have water in it. Running outboard with cover off, is a little black box that would have a red light lit if that's the case. If oil full & no red light, may be oil injection system...would also check to make sure lines aren't pinched, etc. Mine has been specific to oil the two times its gone off.

The full non-pulsating is engine overheat. Not sure beyond that.

Not much, but hopefully gets you going.