gear shift problems?

L

lukecarolina

Cadet
Joined
Apr 12, 2006
Messages
7
i currently have a 96 johnson 112 spl. heres what it is doing wrong: at low throttle (not planing) its fine, when i try to get on plane, i mash down the throttle, and it starts to get on plane but doesnt yet then rpms go up to about 4000 without progress. i back off the throttle then wait then it feels like it finally shifts, then it gets on plane. the point is it feels like it is shifting late. Can i adjust the shift cable? dont know how this works. im sure the prop hubs not spun because i marked it. I can truly use help to get this thing running right.
 
N

noelm

Senior Chief Petty Officer
Joined
Mar 8, 2005
Messages
761
Re: gear shift problems?

not too sure about shift problems because I reckon that if you "mash" the throttle down, if it was NOT in gear it would certainly do more than 4000RPM, more than likely the motor has a "flat spot" and is not picking up as it should.
 
rickdb1boat

rickdb1boat

Supreme Mariner
Joined
Jan 23, 2002
Messages
11,195
Re: gear shift problems?

Nope, Only one gear forward. Might try trimming the motor in further when you take off. Sounds like the prop is ventilating for whatever reason. Is the prop in good shape? Cavitation plate even with the bottom of the hull?
 
Silvertip

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: gear shift problems?

VEntilating is when the prop is sucking air. You may be trimmed up too high. Trim all the way down until you get on plane. Then trim up as needed. When the motor is trimmed way up you are forcing the bow to rise which makes it really tough for the boat to get "over the hump" or "out of the hole" so to speak. Air is drawn into the back side of the prop so it can't provide the required forward push. To get on plane give it full throttle. When the boat planes you can always back off a little if you want.
 
K

KYHunter2

Chief Petty Officer
Joined
Mar 20, 2006
Messages
512
Re: gear shift problems?

An easy way to get trim very close to correct . At least on the boats Ive operated. Is to get out of hole trimmed down/in. Then once on plane trim up until, you have the same amount of play (?) each way left / right in steering.<br /> I mean when its trimmed correctly , there shoudn't be any side force , either left/right. <br /> Though not a good idea, I've been able, to turn loose of the wheel, running wide open, and go straight as a pin, down the lake. <br /> This may not be true, on all set-ups . But, I've owned, a few different boats, over the years, and this was the case.<br /> <br /> Good-Luck,<br /> KYHunter
 
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