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Old June 24th, 2007, 07:15 PM
taxman53 taxman53 is offline
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Default 9.8 Mercury Gear Problem

I have about a 10 year old 9.8 merc outboard with gear/linkage problems. (or so it seems) When you put it in gear it revs up but no speed. Revs high but gears don't kick in like they should ...only about 2 or 3 mph. seems like something is slipping Trolling button is off..Any ideas???
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Old July 1st, 2007, 11:21 PM
C-VENN C-VENN is offline
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Default Re: 9.8 Mercury Gear Problem

I have a 1991 8hp with same problem, Works at low end rpm but when you reach higher side, no prop power. Engin runs normal just no actual power. Going to dealer tomarrow, I will let you know how much $$.
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Old July 3rd, 2007, 01:17 AM
C-VENN C-VENN is offline
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Default Re: 9.8 Mercury Gear Problem

There is some sort of bushing behind the prop that failed. It must be common becasue he fixed it in 10 minutes. Then sold me a new prop, because he said mine was chewed apart. All told $100 with prop.
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Old July 5th, 2007, 12:55 PM
fst929 fst929 is offline
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Default Re: 9.8 Mercury Gear Problem

I have the exact same trouble with my 9.8hp. Engine runs great, twist the throttle and she rev's up but it seems like something is slipping as I dont really go any faster. Low speed all seems ok.

Do you know the name of the part?? is it the propeller guide collar?? AKA thrust washwer??

I called my dealer on it and the part is no longer available so if you need one or think you might in the future...get'm while you can! I am pulling my prop off tonight to check. I am picking up the part anyway today just to have

Last edited by fst929 : July 5th, 2007 at 03:28 PM. Reason: more info
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Old July 7th, 2007, 12:21 PM
fst929 fst929 is offline
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Default Re: 9.8 Mercury Gear Problem

After pulling my prop off I discovered it was the prop hub that was shot...the rubber bushing was shredded..

time to get a new prop!
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Old July 16th, 2007, 11:44 PM
C-VENN C-VENN is offline
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Default Re: 9.8 Mercury Gear Problem

Took it out last weened it ran fine so the dealer fixed it.
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