5hp Two Stroke Not Weeing !

sunrunner · #1 (**permalink**) 10-25-2009, 09:28 AM

I have a Merc 5HP 2 Stroke, does any one know the trick to take the bottom leg off so i can get to the impeller? Tried to do it but it was stuck with the linkages to the Gear selector and I could not see where to disconnect it .

The motor is not weeing and I am sure that I have some mud or something in the Impeller housing. Is it a servicable item?
or am I waisting my time and should I take it to a Pro?
Looking forward to any advice
Kind regards
Justin

boats.net · #2 (**permalink**) 10-26-2009, 08:24 AM

Remove the rubber plug in mid housing to get access to clamp that connects shift shaft togather. Number 9 in this diagram Mercury Outboard Parts 5 HP 2-Stroke 0G710613 THRU 0T894438 Driveshaft Housing-Gear Housing Diagram

sunrunner · #3 (**permalink**) 10-26-2009, 03:34 PM

Thank you for that information ! I can believe that I missed the plug, I went out to the boat and found it straight away, will have another attempt this weekend

sunrunner · #4 (**permalink**) 10-31-2009, 12:03 PM

Well I managed to take the bottom leg off, and get to the impeller, it is straight forward once you have a bit of guidance! Thank you. One tip though is to make sure that the motor is in reverse gear when you undo the bolt that connects the Gear linkages together. I found the impeller totally disintegrated. Only one Arm / Blade was left intact. I found two others in the bottom of the pump but have no idea where the others are the little pin was just rolling around the bottom housing at well. This leads me to this question,

Should I totally strip the motor to check if the little rubber pieces have not got up into the motor and are now blocking water cooling channels around the engine? Or are the channels big enough for these pieces to pass through? I should imagine that they are as you could suck up sticks and stones through the grill at the bottom which could also get stuck in the cooling system.

I am now after the part number for the impeller, the motor has the following details
Make: Mercury
Model: 5MLH
Year: 1997

It also has the following information on it:
Marine Power
Made in Belgium

I use this engine for trawling and as backup to the main motor (Yamaha 130) so it has to be reliable.
Thanking you for all your advice
Kind Regards
Justin Richards

sunrunner · #5 (**permalink**) 11-01-2009, 02:44 AM

Sorry I forgot to mention that the serial No is 09965979, I cannot seem to locate the correct item on the parts list as the serial numbers on your lists start with Letters !, Looking forward to your reply
Regards

boats.net · #6 (**permalink**) 11-02-2009, 04:06 PM

If can't find all broken pieces in water pump or in inlet screen on bottom side of cavitation plate then it may have pieces in water tube going to engine or in engine water passages.
The impeller is number 15 in this diagram and water pump kit is at top of list Mercury Outboard Parts 1997 1005201TM GEAR HOUSING COMPONENTS Diagram

sunrunner · #7 (**permalink**) 11-03-2009, 12:13 PM

Will have a look this weekend, and see, Thank you for the part number, If I cannot find it here in Zimbabwe, I will order it from you , You guys are great !!
Will keep the post going till job is finnished

sunrunner · #8 (**permalink**) 11-21-2009, 05:53 AM

All good !!, I have replaced the the Impeller and it is now weeing like it has had six cups of coffee and 12 Beers , thanks for for all your help I would not have been able to do it with out your support , Impeller cost $25 here for those of you that are intrested.