|
| Mercury 20hp prop problem?? |
| Author |
Message |
    
Zuidema (Zuidema)
| | Posted on Monday, July 08, 2002 - 04:27 pm: | 
|
I recently bought a 1975 Mercury 20hp. I knew that the previous owner had gone through two props in about three years due to hub failures. The last prop he put on it was a "rebuilt" Michigan Wheel unit. I put a new Mercury prop on it and have been having fun with for a little over a week now.
Today at full throttle the hub began to spin in my new Mercury prop. Luckily I was able to limp back a few miles to the boat ramp at about 1/2 throttle.
Is there something in this motor that can be causing it to use props, or did I just buy a dud prop from Mercury? |
sparky
| | Posted on Monday, July 08, 2002 - 05:08 pm: |
|
A bad water pump impeller would mean that the exhaust is hotter than it should be. This condition could damage the rubber hub in the prop. Heat is the enemy of rubber components. |
Tonyob (Tonyob)
| | Posted on Tuesday, July 09, 2002 - 10:46 am: |
|
Zuidema,
I agree with Sparky's comment, and would also advise you to check the prop shaft. A bent shaft can cause hubs to spin.
Tony |
Zuidema (Zuidema)
| | Posted on Tuesday, July 09, 2002 - 11:00 pm: |
|
Is there a way to check the output shaft without removing it? |
adam
| | Posted on Monday, February 10, 2003 - 01:45 am: |
|
around the same year engine, same idea, got the motor from a friend, it used to run well, was run in salt water for a weekend about 5 years ago and never flushed. lower unit siezed completely, no prop spin, no water pump, no shifting. Also, the engine will not turn (left to right). I was trying to get the damn lower end off and am having dificulties. I too off one nut just above the prop, took off the zinc plate and the nut that resides below that, but I cannot find another bolt or nut that would release the lower end. The whole lower end is shot. the case is cracked from the previous owner trying to get it apart. When it last ran, it ran very very strong and idled well. It is also missing the tiller as he had it hooked to a cable/pully system. One thing I have yet to figure out is what all is missing from the tiller setup, also, why the thing will not turn. I also realized that the throttle doesn't seem to want to move but i have not messed with that much. Please email me at adam_rogo@msn.com if you could provide any assistance |
|
|
|
Product Categories |
| Engine Parts · By Brand |
| Engine Manuals · By Brand |
| Books |
| General Repair and Maint. |
| Care and Repair |
| · Adhesive and Sealants |
| · Bottom Cleaners |
| · Cleaners Wax and Polish |
| · Mops Brushes and Sponges |
| Covers and Tops |
| · Bimini Tops · Hardware |
| · Cover Accessories |
| · Motor Covers |
| · Universal Boat Covers |
| Electronics |
| · Gauges and Compasses |
| · Mounts and Accessories |
| Electrical |
| · Batteries & Chargers |
| · Battery Accessories |
| · Dockside Electrical |
| · Electrical Terminals |
| · Electrical Wire, Cable |
| · Fuses, Fuse Holders |
| · Switches |
| · Wire Ties, Clips, Tape |
| Fuel Systems |
| · Fuel Tanks |
| · Fittings, Fills, Vents |
| · Hose & Primer Bulbs |
| · Filters, Senders, Caps |
| Hardware |
| · Deck Cabin Hardware |
| · Molding and Rub Rails |
| · Rails and Fittings |
| · Snaps Shackles and Hooks |
| · Windshield Hardware |
| Lighting |
| · Cabin Lights · Light Bulbs |
| · Navigation Light Parts |
| · Navigation Lights |
| · Spotlights · Parts |
| Mooring and Dock |
| · Boat Fenders · Boat Hooks |
| · Buoys and Markers |
| · Deck Cleats · Dock Edging |
| · Dock Parts and De-Icers |
| · Fender Covers and Holders |
| · Keelshield / Toon-Tectors |
| · Ladders and Platforms |
| Prop / Trim /
Transom |
| · Jack Plates, Wedges |
| · Mounting Brackets |
| · Outboard Stands |
| · Trim Tabs, Stablizers |
| · Prop Nuts, Locks, Pins |
| · Propellers · Wrenches |
| Pumps |
| · Aerator Pumps |
| · Bilge Pumps |
| · Drain Plugs and Tubes |
| · Hose · Through Hull Fittings |
| Rope and Cordage |
| · Anchor Line · Dock Line |
| · Fender Line · Bulk Rope |
| · Shock Cord and Bungee |
| Safety Products |
| · Horns Bells and Whistles |
| · Mirrors |
| · Vents Blowers and Hose |
| Sanitation |
| · Fresh Water Pumps |
| · Marine Toilets |
| · Sanitation Chemicals |
| · Sanitation Pumps/Hose |
| · Water/Waste System Parts |
| Seating |
| · Deck Chairs and Tables |
| · Fishing Seats |
| · Lounge Seats |
| · Pontoon Furniture |
| · Seat Bases and Pedestals |
| Steering / Control |
| · Control
Boxes |
| · Control
Cables |
| · Hydraulic
Steering |
| · Mechanical
Steering |
| · Rigging · Steering
Wheels |
| Tools / Shop Supplies |
| · Lubricants & Additives |
| · Motor Flushers |
| · Tools & Test Equipment |
| Trailering |
| · Boat Guides/Motor Support |
| · Hitches Balls Couplers |
| · Rollers Brackets Springs |
| · Tires Wheels and Carriers |
| · Trailer Hubs & Bearings |
| · Trailer Jacks |
| · Trailer Wiring and Lighting |
| · Winches Straps Tie Downs |
| Manufacturer List |
|
