Car Fix DIY Videos

Here I show you how to take the lower unit off and access the impeller on this Mercury Outboard motor. I believe this is similar for the 4.5 5.5 6.5 7.5 8.5 9.5 Mercury. This is the old Merc45 Merc 45. Here is the first part of 2 parts where I go step by step to change the IMPELLER on the water pump. This will allow you to see how to change your impeller and save some money and time from waiting for the shop to get around to it.

I just realized I put the impeller in backwards. I must have flipped it while I was trying to put it on. It needs to spin clockwise. Lucky me back out there. mercury outboard water pump replacement
mercury 4.5 hp outboard trolling motor kicker motor carb still good. and ran like a champ.
mercury outboard impeller replacement
replace impeller mercury outboard
Taking off lower unit mercury outboard
changing impeller
How to repair outboard with no water coming out the tell tale
Here I go step by step to go through the replacement of the water pump impeller. There may be some differences in the motor you are working on depending on the year but for the most part they are fairly similar.

I got this older Mercury 4.5 HP long shaft motor from a guy that hadn’t run this in years. It started up right away and idled to almost nothing. I noticed water was not running through the TELL TALE and I replaced / changed out of the impeller. This old two stroke motor worked great and the carburetor was still good. After switching up the impeller this worked like a champ and I took it on a 2 week vacation as a kicker and trolling motor.
Boat motor using as a kicker in my river boat, as this is the biggest motor I can get on without my steering bars hitting and not needing a kick plate to hold it up.
4 5 6 7 8 9 4.5 5.5 6.5 7.5 8.5 9.5 horse power hp
Not sure of the year? ; 4 5 6 7 8 9 4.5 5.5 6.5 7.5 8.5 9.5 horse power hp Not sure of the year? ; 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 Johnson Mercury Mariner Evinrude Yamaha Honda nissan suzuki Tohatsu Marine Outboard

Caution! I post all my videos for informational purposes only. Any attempt to duplicate these techniques are at your own risk!