MarineEngine.com - Your online store for all types of marine engines and boat parts.
PHONE ORDERS
Monday - Friday
9:00 AM - 5:00 PM EST
Click for TOLL-FREE Number
Online Checkout
Special $9.95 Flat Rate Shipping
(800) 209-9624 | Home | Contact | Shipping | Returns | Cart View your shopping cart.
Part Number Search
Shop by engine/drive part number.
Original & matching parts for sale.
Manuals & Accessories
Shop by description, item number
or manufacturer's model number.
Boat Repair Forum Boat Repair Forum   Boat Video Gallery Video Gallery
   
Results 1 to 6 of 6
  1. #1
    Cam Brown's Avatar
    Cam Brown Guest

    Default " Any suggestions? I recently

    " Any suggestions?
    I recently purchased a reconditioned 1985 15 hp evinrude. I'm almost through my second tank of 40:1 fuel mix to 'run it in' and it is still really sluggish. It's starting fine and idles well, but does not respond to throttle opening and bogs down quite bad. My old 8 hp Merc was quicker by far. Any suggestions would be greatly appreciated as It's just about summer here in Australia and I want to make the most of the weekends!
    Cheers
    Cam Brown "

  2. #2
    Join Date
    Feb 2001
    Location
    Central West Florida
    Posts
    12,062

    Default "Cam.... There's no need t

    "Cam.... There's no need to be using a 40/1 mixture. It's quite alright to use the standard 50/1 mixture for break in. The problem you describe would be contributed to a slightly clogged/fouled carburetor. Possibly, whoever rebuilt the engine did not do a thorough job of rebuilding the carb (it happens). I'm assuming that the compression and spark etc are as they should be.

    Joe[img][/img]"
    Our questions require answers. If you refuse to answer our questions, how can we answer yours?

  3. #3
    Cam Brown's Avatar
    Cam Brown Guest

    Default " Joe, thanks for your reply.

    " Joe, thanks for your reply. I'll try the carb first. I'm assuming that because its a rebuild, that the compression is fine. The spark is fine, tested it last night. Would I be right in thinking that the high speed jet is the culprit? How can I fix a fouled/clogged carb?

    Thanks again Joe

    Cam Brown

    P.S I will start using 50:1 mix now! "

  4. #4
    Join Date
    Feb 2001
    Location
    Central West Florida
    Posts
    12,062

    Default "Cam.... The only way to fix a

    "Cam.... The only way to fix a clogged/fouled carb is to remove, dismantle, clean, and rebuild it. Purchase a complete carburetor kit first. Make notes and drawings as to what goes where. Believe me that regardless of how simple it seems, you will find something where you can't remember how it should be when it comes time to put the engine back together.

    Note... It will no doubt be necessary to remove the manual starter. Be very careful as that spring is dangerous! Pull the rope out a few feet and tie a slip knot in it so that it can't rewind back. Carefully remove the starter handle, then grab the rope inside at the starter pulley, then let the rope withdraw somewhat but not completely (leave a foot or so to work with). Now, secure the rope inside at the starter pulley to the upright pulley gear guide in a manner that will prevent the spring from rewinding the cord etc. Hold the manual starter assy together when loosening the top large retaining bolt (do not remove that bolt completely from the starter housing assy). Carefully remove the starter assy while holding it together. Screw a nut on the bottom of that large retaining bolt to hold the starter together while you're working on other components. Reverse the procedure to install the starter. Notice that there is a 90° flange on the bottom of that spring housing that locks into the bracket it sits upon Good Luck.

    Joe (30+ Years With OMC)"
    Our questions require answers. If you refuse to answer our questions, how can we answer yours?

  5. #5
    Join Date
    Jun 2002
    Location
    Posts
    129

    Default " Joe does that same procedure

    " Joe does that same procedure hold true for my 1977 25 hp manual start , that you gave Cam about removing manual starter with rope?? If you remove those 3 bolts from top of starter will it fly apart Also i had to make a trip to vineland today so i thought i would stop in to see Harry but couldnt find place West ave off of Chestnut is that right?? "

  6. #6
    Join Date
    Feb 2001
    Location
    Central West Florida
    Posts
    12,062

    Default " Gary.... No, the 25hp manual

    " Gary.... No, the 25hp manual starter is a completely different animal. Removing those three (3) bolts will simply allow you to lift the complete starter assy off the engine. The Boat Docktor (Harry Nitsche) is slightly south of Chestnut at/on 712 S.West Blvd on the west side of the street.

    Joe (30+ Years With OMC) "
    Our questions require answers. If you refuse to answer our questions, how can we answer yours?

Similar Threads

  1. LM318 Lacks top end power
    By Dennis B. in forum Chrysler Inboard and Sterndrive Archive
    Replies: 10
    Last Post: 09-08-2007, 07:02 AM
  2. Lacks power
    By paulbip in forum Johnson Evinrude Outboard Archive
    Replies: 9
    Last Post: 07-05-2007, 01:25 PM
  3. 88b Merc 135 lacks power
    By the_woodwright in forum Mercury Mariner Outboard Archive
    Replies: 1
    Last Post: 02-24-2007, 03:50 PM
  4. 30 4 cylinder lacks power
    By cj5732 in forum Other Gas Inboard Mfgs IO and Sterndrive Questions
    Replies: 7
    Last Post: 03-06-2006, 07:09 PM
  5. 30 4 cylinder Lacks RPM
    By cj5732 in forum Archive 2003-2009
    Replies: 0
    Last Post: 05-04-2004, 09:14 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •