starting 25 hp mercury

mrustymac

Cadet
Joined
Jul 11, 2002
Messages
13
Recently the proud owner of our first decent sized boat.14' starcraft. guy i bought it from says the motor runs excellent. And that it does ,its starting it that makes me wanna cry. Its a 80-81 merc 25 hp. has a knob type choke which you turn to the right till it clicks in position for choke on ? Ok so what are we doing wrong? plug in the gas,squeeze bulb 4-5 times. turn choke all the way to the right . then pull and pull and pull about 10-20 times :mad: .slowly it gets more and more like it wants to start if we pull 1 more time.then once it does we take the choke off and for the most part it remains running . cant give it gas cause giveing it gas puts it in gear. what position is the knob supposed to be in when running? :confused: if i shut it down its the same process all over again.not good for a bad back and i wanna be on the river once i get confident this motor isnt going to sleep and not wake up. thanks for all replies.<br />Scott
 

FlyBoyMark

Ensign
Joined
Apr 14, 2002
Messages
934
Re: starting 25 hp mercury

Its not a choke, its a carb enrichner......pump your bulb once or twice more than normal...does the engine run fine after it starts? Is the tank vent open? how long is the fuel hose? You might need fuel pump diaphrams or carb clean job. Put some premix in a squirt bottle and prime the engine with the cover off and see if it starts easier.
 

mrustymac

Cadet
Joined
Jul 11, 2002
Messages
13
Re: starting 25 hp mercury

Just opend the cowl and found a dirty fuel filter (from a car) got it replaced but now im off to work .. cant check it untill tommorow. hope thats my problem? tank vent open runs good after it starts. forgot your other question.. bulb never seemed to get hard .just semi hard.<br /> thanks will update tommorow. carb enhancer??
 

mrustymac

Cadet
Joined
Jul 11, 2002
Messages
13
Re: starting 25 hp mercury

yep, enrichner? sowwy thats what i meant. was in a rush to get back at you before running off to work. I do appreciate your help.
 

mrustymac

Cadet
Joined
Jul 11, 2002
Messages
13
Re: starting 25 hp mercury

Just got a chance to put it in water an pull. with the new fuel filter in place it took just 4 pulls on a cold start. :D whats the proper procedure for shutting down? if i unplug the gas and let it drain it took another 4 pulls. turning the ENRICHNER fully to the right.(I though was chokeing ? ) same thing ,4 pulls. and it almost seems flooded. if i turn it fully to the left it runs rough but wont stall. is it supposed to stall at this position?? if i turn to the right just before it clicks in and just twitch it she dies and will start back up with 2 pulls. big question is it supposed to cut off if turned to the left and maybe out of adjustment? or am i missing something alltogether?<br />thanks<br />scott
 

salmonlakeange

Recruit
Joined
Aug 13, 2010
Messages
2
Re: starting 25 hp mercury

Would the enrichner be causing my 2003, 4 -stroke, 25hsp Merc to start then stop. I've tried new hi-test fuel..I can get it to start and idle for a few mins...then it just quits. If I tried to give it gas...it quits as well! Gas line bulb never stays hard and doesn't make a difference if I squeeze it to try to keep the engine going!?!?! I have tried a new gas tank and line from a friends motor...same thing....Enrichner??
 
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