| Author |
Message |
    
Greg Adams
New member
Username: gadams500
Post Number: 1
Registered: 06-2009
| | Posted on Wednesday, June 24, 2009 - 09:55 pm: | 
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My mid 1980's Mercury 9.9 was running full out across the lake today when suddenly it lost power to the prop while the engine went into high rev. I was able to get back to the dock at low speed but when ever I applied more than minimal throttle it would just rev up but not put power to the prop. Any ideas on what this could be? |
Fastjeff
Senior Member
Username: fastjeff
Post Number: 6114
Registered: 09-2003
| | Posted on Wednesday, June 24, 2009 - 10:43 pm: |
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Prop hub is slipping. Scratch a mark on the hub and prop, take it for a spin, then see if the marks moved. They should not have.
Jeff |
ian summerfield
Member
Username: budgie14
Post Number: 10
Registered: 06-2009
| | Posted on Wednesday, June 24, 2009 - 10:47 pm: |
|
sounds like the spline on the driveshaft into the motor has stripped,or the prop rubber bushing has come unstuck.put in gear,motor stopped,on land,and have a look,and rock prop and c what u can hear clunking.make sure its going into gear fully on the g/shift |
Greg Adams
New member
Username: gadams500
Post Number: 2
Registered: 06-2009
| | Posted on Thursday, June 25, 2009 - 02:14 pm: |
|
Thanks - The props rubber bushing had been ground to hamburger. |
Greg Adams
New member
Username: gadams500
Post Number: 3
Registered: 06-2009
| | Posted on Thursday, June 25, 2009 - 02:59 pm: |
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Do I need a new prop? The prop blades are perfect just the rubber around the copper sleeve inside the prop is history. Can this be repaired? |
Fastjeff
Senior Member
Username: fastjeff
Post Number: 6128
Registered: 09-2003
| | Posted on Thursday, June 25, 2009 - 05:10 pm: |
|
Sure. A good prop shop will press in a new bushing.
Jeff |
