red band merc popping out of gear

C

chocky

Recruit
Joined
Mar 26, 2005
Messages
5
i have just bought my first boat. it has a 100hp mercury red band motor, the controller is from a blue band motor but seems to work fine. the problem is when you try to go aboue about 10 knots it pops or slips out of gear and free revs. the only way it will go back into gear is to back the revs right off and it bangs back into gear and off you go again, slowly. any ideas :confused:
 
Chinewalker

Chinewalker

Fleet Admiral
Joined
Aug 19, 2001
Messages
8,902
Re: red band merc popping out of gear

SOunds like an adjustment issue. MIght want to make sure the shifter cable is extending fully and that it is pushing the shift arm inside the motor all the way into forward gear. Have someone operate the controller while you watch what happens under the cowling and you should be able to figure out what's supposed to happen... There are barrel nuts on the cable for adjustment purposes...<br />- Scott
 
WillyBWright

WillyBWright

Fleet Admiral
Joined
Dec 29, 2003
Messages
8,200
Re: red band merc popping out of gear

At least we hope that's all it needs. But on a motor that old, it wouldn't be uncommon for the gear and shifter mating surfaces to be worn out. Especially if the previous owner Granny shifted it.<br /><br />Could be a stiff cable too.<br /><br />Check your gearlube.
 
7

700XC

Cadet
Joined
Mar 26, 2005
Messages
21
Re: red band merc popping out of gear

Sounds like your shift timming is out of alignment, A manuall for your motor will tell you howc to set things up, if this is not done right you will damage the lower unit, if you do not really know what you are doing it is well worth it to have a marine machanic set thisw up for you. It should only take him a few minuits and a min. of their hourly shop rate $45 to 70.00 this can save you a lot of damage and and downtime/cash in the long run.
 
Yepblaze

Yepblaze

Lieutenant Commander
Joined
Jun 1, 2001
Messages
1,686
Re: red band merc popping out of gear

Sounds like a spun prop hub to me.
 
Nos4r2

Nos4r2

Lieutenant Commander
Joined
Dec 12, 2004
Messages
1,533
Re: red band merc popping out of gear

Can't be a spun hub- it wouldn't bang back into gear.
 
M

Motor Boater Bill

Chief Petty Officer
Joined
Jan 29, 2005
Messages
488
Re: red band merc popping out of gear

I've had a spun hub grab again when I backed off the RPM's, but it didn't "bang" I could just feel when it grabbed again.
 
C

chocky

Recruit
Joined
Mar 26, 2005
Messages
5
Re: red band merc popping out of gear

thanks for your help guys. i dont think its the prop spinning as it feels tight in gear. the barrel nut on the controller cabel is fully ajusted to enable reverse to be selected or it wont go into reverse easily and i thought this might be stopping it selecting foward but it goes into foward gear quite easily and goes well at low speeds. is the blueband shift controller ok on the red band motor and are there any aftermarket controllers avalible. again thanks
 
Nos4r2

Nos4r2

Lieutenant Commander
Joined
Dec 12, 2004
Messages
1,533
Re: red band merc popping out of gear

Bill, that's exactly what I meant-thanks for putting it more clearly than I did!<br />Pretty much any controller I've found will fit with the right adapters-you'll just have to ask when you buy. The redband controller is identical bar colour to the blueband (I've got one of each next to me right now)
 
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