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| Boat Fishing & Boating A new forum at Striped-Bass.com for those fishing from boats and for boating in general |
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06-26-2005, 09:24 PM
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#1
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Registered User
Join Date: Feb 2005
Location: NJ
Posts: 113
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OUTBOARD HELP NEEDED
2001 yamaha 115 hp.... 2 stroke......
ran great all day.... packed up to head in and only got 3000 rpms at full throttle..... took it out of gear and gave it gas and RPMS went up no problems..... put back in gear and still only goes 3000 rpms at 8-10 mph..... No sputtering, and Not over heating ????
Looking for possible problems before I go looking for a mechanic.... also ... do these engines have some sort of fail safe system that only allows them to go 3000 rpms ?
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06-26-2005, 09:37 PM
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#2
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Registered User
Join Date: Aug 2002
Location: RockVegas
Posts: 3,228
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Spun hub on the prop?  |
The future ain't what it used to be. --Yogi Berra
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06-26-2005, 09:43 PM
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#3
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BigFish Bait Co.
Join Date: Apr 2003
Location: Hanover
Posts: 23,392
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Clogged fuel filter?
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Almost time to get our fish on!!! 
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06-27-2005, 07:28 AM
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#4
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Registered User
Join Date: Mar 2004
Location: Marshfield, MA
Posts: 1,748
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Like BigBo said earlier check out the prop hub first. Din't need to be a mechanic to do that one.
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Jon, 24' Nauset-Green Topsides, Beamie, North River. Channel 68/69. MSBA, NIBA
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06-27-2005, 11:23 AM
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#5
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"Fishbucket"
Join Date: Feb 2004
Location: Bahston Hahbah
Posts: 6,588
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ask on www.iboats.com.
under forums, in the yamaha section.
TONS of info there. |
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06-27-2005, 11:29 AM
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#6
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Certifiable Intertidal Anguiologist
Join Date: Feb 2000
Location: Somewhere between OOB & west of Watch Hill
Posts: 35,270
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Before you do ANY further testing, veify that you have gear oil in the leg....
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~Fix the Bait~ ~Pogies Forever~
Striped Bass Fishing - All Stripers
Kobayashi Maru Election - there is no way to win.
Apocalypse is Coming:
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06-27-2005, 11:36 AM
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#7
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Which Way Did They Go
Join Date: Apr 2002
Location: Blackstone, MA
Posts: 1,147
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Quote:
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Before you do ANY further testing, veify that you have gear oil in the leg....
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Exactly right.
Then check prop hub, then lower unit gears......IMO |
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06-27-2005, 01:07 PM
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#8
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Finally
Join Date: Jan 2003
Location: FL
Posts: 7,181
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Doubt it's the prop hub, engine would race and boat wouldn't move fast. I'm sure they have some sort of fail safe system that limis rpm when there's a problem. I'd also make sure the linkage is pulling the throttle all the way open on the engine.
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F-18® 
It IsWhat It Is
¸.·´¯`·.¸><((((º>¸.·´¯`·.¸><((((º>¸.·´¯`·.¸><((((º >¸.·´¯`·.¸><((((º>¸.·´¯`·.¸><((((º>¸.·´¯`·.¸><(((( º>
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06-28-2005, 07:53 PM
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#9
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zoom
Join Date: Apr 2002
Location: Quincy
Posts: 4,145
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Agree not the hub, the engine would race.
The newer OBs have overheat and low oil S.L.O.W. (Speed Limiting Overheat) sensors, that will not let the engine go over a certain RPM, I picked up a trash bag on the LU and the SLOW kicked in, saved the powerhead !!!
Check there is enough oil or that the sensor is OK if you got plenty of oil.
Good Luck
Let us know....
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~..~..~.. ><((((º>
Things done at the last possible minute are done with the greatest possible information. Procrastination is, therefore, the most efficient means of doing things.
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06-29-2005, 06:59 AM
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#10
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Registered User
Join Date: Mar 2004
Location: Marshfield, MA
Posts: 1,748
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After reading HR post again I agreee probably not the Hub. Like guys have said you'd have high rpms but wouldn't be moving fast.
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Jon, 24' Nauset-Green Topsides, Beamie, North River. Channel 68/69. MSBA, NIBA
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06-30-2005, 12:09 PM
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#11
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Registered User
Join Date: Feb 2003
Location: Falmouth
Posts: 269
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check for a fouled plug. 3000RPM's seem to high for a fail safe system.
Same thing happened to my buds 150 Johnson, but the plug wire was just loose, I plugged it back in and he was back in business. Those are the best fixes.
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