77 johnson 25 no forward or reverse, Help Please!

santana21

Seaman Apprentice
Joined
Aug 23, 2004
Messages
32
Hello all,<br /><br />I have a '77 Johnson 25 hp on a '63 Arkasas Traveler fiberglass boat. Was on the water yesterday and had no problems idling around a cove. Went out of the no wake area and hit the throttle. Bow started to rise and then motor spun but no forward or reverse. <br /><br />The control cable is fine and doing what it is supposed to.<br /><br />Shifting the motor with the cable disconected does not help. Shifts fine but no F/R.<br /><br />Prop will not spin by hand out of the water when in gear.<br /><br />Could this be a control rod that has come loose?<br /><br />Motor is electric start with remote controls. I have had no indication that anything was amiss, no grinding funny noises hard shifting ect. <br /><br />I have not torn anything apart. Was hpoing you guys would have some ideas. Please Help!<br /><br />Thank you<br /><br />Jim :(
 

jfm1

Petty Officer 1st Class
Joined
May 14, 2004
Messages
355
Re: 77 johnson 25 no forward or reverse, Help Please!

sounds like a spun prop?
 

OBJ

Supreme Mariner
Joined
Dec 27, 2002
Messages
10,161
Re: 77 johnson 25 no forward or reverse, Help Please!

Jim....did the engine rev high and you gained no forward movement? Will the boat move at all at low idle speeds? What I'm trying to do is determine if you might have a spun hub in the prop.
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: 77 johnson 25 no forward or reverse, Help Please!

prop
 

santana21

Seaman Apprentice
Joined
Aug 23, 2004
Messages
32
Re: 77 johnson 25 no forward or reverse, Help Please!

Yes, the engine revved high with no forward movement.<br /><br />I had a little reverse shortly after and then no movment at all.<br /><br />Jim
 

santana21

Seaman Apprentice
Joined
Aug 23, 2004
Messages
32
Re: 77 johnson 25 no forward or reverse, Help Please!

What does one do about the prop? New one or can these small ones be rebuilt? The prop does not look like the kind the exhaust goes through. Can those still be spun?<br /><br />Jim
 

OBJ

Supreme Mariner
Joined
Dec 27, 2002
Messages
10,161
Re: 77 johnson 25 no forward or reverse, Help Please!

Jim...pull the prop and using a water proof marker, make a reference line from the rubber hub to the prop housing the hub sets in. Put the prop back on and run it so the problem occurs again. Pull the prop and check the reference line. If the rubber hub part of the line has moved, the hub is spun. Take it to a prop shop and get it rehubbed. It happens.
 
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