Post your technical questions here
Please limit advise to factory procedures & proven measures
by
Administrator »
Thu Nov 05, 2015 8:40 pm
0 Replies
496 Views
Last post by Administrator Thu Nov 05, 2015 8:40 pm
Mark 30 Timing Help
Replies: 3
by
spitdoc »
Tue Aug 16, 2022 10:41 pm
3 Replies
62 Views
Last post by spitdoc Wed Aug 17, 2022 9:58 pm
mark 20
Replies: 1
by
NJ John »
Wed Aug 17, 2022 6:06 pm
1 Replies
22 Views
Last post by john bennig Wed Aug 17, 2022 8:12 pm
Mark 5 prop shaft seal.
Replies: 3
by
Benjamen McLaren »
Tue Aug 16, 2022 5:23 pm
3 Replies
35 Views
Last post by Benjamen McLaren Wed Aug 17, 2022 4:55 pm
Mark 20 seals
Replies: 2
by
NJ John »
Sun Aug 14, 2022 4:24 pm
2 Replies
59 Views
Last post by AU52N Mon Aug 15, 2022 2:24 am
Mark 58 Start up problems
Replies: 18
by
CarltonPeterson »
Sun Jul 31, 2022 12:00 am
18 Replies
177 Views
Last post by dave bernard Sat Aug 13, 2022 11:03 pm
My Merc 800 CDI electronics issues.
Replies: 4
by
SteveC »
Tue Aug 02, 2022 4:00 am
4 Replies
76 Views
Last post by SteveC Thu Aug 11, 2022 3:26 am
Direct Reversing Lower Unit Question
Replies: 5
by
Hank1995 »
Fri Jul 29, 2022 3:50 pm
5 Replies
111 Views
Last post by Fingerlakeskid Thu Aug 11, 2022 3:14 am
1961 Merc 400 "barely" start issue
Replies: 91
by
JayhawkLB7 »
Sat Sep 11, 2021 1:42 am
91 Replies
791 Views
Last post by JayhawkLB7 Tue Aug 09, 2022 7:59 pm
KG7H issue
Replies: 8
by
chuckw »
Wed Jul 13, 2022 3:59 pm
8 Replies
153 Views
Last post by champhotrod Sun Jul 31, 2022 7:22 pm
1971 Merc 50hp on Go Home Lake
Replies: 14
by
Jetstar50 »
Wed Jul 27, 2022 4:18 pm
14 Replies
109 Views
Last post by mercaholic Thu Jul 28, 2022 11:23 pm
1978 in line 6 problem
Replies: 25
by
ces308 »
Tue Jul 19, 2022 10:48 pm
25 Replies
237 Views
Last post by dave bernard Wed Jul 27, 2022 8:01 pm
1959 35A gearfoot on a 1958 MK55?
Replies: 10
by
squirrelboydeluxe »
Sat Jul 23, 2022 6:20 am
10 Replies
119 Views
Last post by 58woody Wed Jul 27, 2022 3:30 pm
Frozen shafts - '64 Merc 500
Replies: 7
by
mercaholic »
Thu Jul 21, 2022 5:49 pm
7 Replies
95 Views
Last post by mercaholic Sun Jul 24, 2022 12:25 pm
NGK plugs
Replies: 19
by
chuckw »
Tue Jan 18, 2022 7:36 pm
19 Replies
370 Views
Last post by squirrelboydeluxe Sat Jul 23, 2022 5:20 am
Quicksilver Dual Control Starter Switch
Replies: 2
by
CarltonPeterson »
Tue Jul 12, 2022 2:46 am
2 Replies
59 Views
Last post by CarltonPeterson Tue Jul 12, 2022 6:57 pm
Wh7 kh7 lower unit installation
Replies: 4
by
dougw »
Mon Jul 11, 2022 12:28 am
4 Replies
66 Views
Last post by dave bernard Mon Jul 11, 2022 2:43 pm
4d 1 mag
Replies: 2
by
daveh »
Sun Jul 03, 2022 8:44 pm
2 Replies
91 Views
Last post by ctpdsr Mon Jul 04, 2022 11:07 pm
Gearcase pressure test
Replies: 2
by
inlinemerc »
Fri Jul 01, 2022 3:00 am
2 Replies
86 Views
Last post by Cottage Racer Sat Jul 02, 2022 12:33 pm
Gas Tank Question for mark 20
Replies: 1
by
jimshydroshop »
Sat Jun 25, 2022 8:38 pm
1 Replies
83 Views
Last post by dave bernard Sat Jun 25, 2022 9:09 pm
Question on hydroplane builder
Replies: 10
by
jimshydroshop »
Tue Jun 07, 2022 4:51 pm
10 Replies
220 Views
Last post by necks Thu Jun 23, 2022 5:06 pm
1956 Mark 30 gear foot question
Replies: 5
by
jimshydroshop »
Thu Jun 02, 2022 5:41 pm
5 Replies
133 Views
Last post by dave bernard Tue Jun 21, 2022 4:28 am
Quincy Throttle hookup to my stock Mark 20
Replies: 1
by
jimshydroshop »
Sun Jun 19, 2022 11:32 am
1 Replies
75 Views
Last post by AU52N Mon Jun 20, 2022 4:48 pm
1972 merc 200 20hp lower unit
Replies: 7
by
moutainmerc »
Fri May 13, 2022 5:06 am
7 Replies
150 Views
Last post by moutainmerc Fri Jun 10, 2022 11:19 pm
Merc 3.9 shift shaft
by
mercaholic »
Fri Jun 10, 2022 12:21 pm
0 Replies
28 Views
Last post by mercaholic Fri Jun 10, 2022 12:21 pm
Prop Help
Replies: 10
by
spitdoc »
Wed May 11, 2022 4:07 pm
10 Replies
164 Views
Last post by Dave Mckinney Thu Jun 09, 2022 11:19 pm
Plastic inserts to retain horseshoe
Replies: 2
by
daveswaves »
Thu Jun 09, 2022 8:06 pm
2 Replies
48 Views
Last post by daveswaves Thu Jun 09, 2022 9:41 pm
Merc 60 6 hp 1960 Cloud White Cowl
Replies: 3
by
Bob »
Sun Jun 05, 2022 12:21 am
3 Replies
73 Views
Last post by SteveC Tue Jun 07, 2022 4:41 am
NTN Bearings for 4cyl Mercs
Replies: 10
by
ctpdsr »
Wed Jan 23, 2019 11:06 pm
10 Replies
244 Views
Last post by Yellowjacket Mon Jun 06, 2022 12:22 am
no fuel coming through AJ Tillotson gravity carb?
Replies: 7
by
lowrider12 »
Sun May 22, 2022 5:49 pm
7 Replies
73 Views
Last post by lowrider12 Mon May 23, 2022 4:43 am
Portable jump box for barrel testing
by
MercuryMarc »
Sun May 22, 2022 10:01 pm
0 Replies
47 Views
Last post by MercuryMarc Sun May 22, 2022 10:01 pm
Mk15 powerhead
Replies: 2
by
exracergreg »
Thu May 19, 2022 9:14 pm
2 Replies
88 Views
Last post by exracergreg Fri May 20, 2022 12:09 am
Mercury 20/40 cubic inch piston rings
Replies: 1
by
champhotrod »
Tue May 10, 2022 1:31 am
1 Replies
83 Views
Last post by ctpdsr Wed May 11, 2022 9:17 pm
Spacers
Replies: 9
by
daveswaves »
Thu May 05, 2022 9:53 pm
9 Replies
126 Views
Last post by AU52N Sat May 07, 2022 11:13 pm
Part Numbers for O-Rings for Merc 250 Seal Retainer Ass'y A-29437A1
Replies: 9
by
Seakaye12 »
Mon Apr 25, 2022 3:38 pm
9 Replies
83 Views
Last post by AllanF Wed May 04, 2022 5:05 pm
Mark 5 - I'm so close - throttle/advance lever hitting something
Replies: 6
by
lowrider12 »
Tue May 03, 2022 6:06 pm
6 Replies
60 Views
Last post by lowrider12 Wed May 04, 2022 12:39 am
or find a Mercury: 48-34402 A4 11 inch pitch, cupped, bronze propeller
Replies: 7
by
CaptnDD »
Mon May 02, 2022 4:14 pm
7 Replies
104 Views
Last post by AllanF Tue May 03, 2022 11:27 pm
Generic Bearing House Equivalent for Merc 250 DriveShaft Bearing?
Replies: 9
by
Seakaye12 »
Fri Apr 22, 2022 3:16 pm
9 Replies
139 Views
Last post by AllanF Sat Apr 30, 2022 10:36 pm
Lower Unit Compatibility
Replies: 7
by
LenLamberg »
Fri Oct 01, 2021 3:35 pm
7 Replies
205 Views
Last post by LenLamberg Sun Apr 24, 2022 8:50 pm
Mark 78
Replies: 8
by
Scratcher »
Mon Feb 07, 2022 10:27 pm
8 Replies
159 Views
Last post by Scratcher Sat Apr 23, 2022 3:18 am
MK30 Mag Drive Housing
Replies: 3
by
ctpdsr »
Fri Apr 15, 2022 8:37 pm
3 Replies
66 Views
Last post by dave bernard Sat Apr 16, 2022 12:23 am
how do I grease my Mark 5?
Replies: 1
by
lowrider12 »
Mon Apr 11, 2022 10:52 pm
1 Replies
51 Views
Last post by dave bernard Mon Apr 11, 2022 10:58 pm
Can anyone I.D. these megaphone pipes?
Replies: 1
by
Tom Brockmeyer »
Sun Apr 10, 2022 5:40 pm
1 Replies
65 Views
Last post by Tom Brockmeyer Sun Apr 10, 2022 5:43 pm
1977 Thunderbolt 7.5hp questions
Replies: 44
by
Brad74 »
Wed Aug 25, 2021 11:52 am
44 Replies
472 Views
Last post by SteveC Fri Apr 08, 2022 2:03 am
Part number question IL6 exhaust side parts
Replies: 1
by
Rapier »
Tue Apr 05, 2022 9:17 pm
1 Replies
42 Views
Last post by AU52N Wed Apr 06, 2022 12:37 am
Merc 1000 Reverse Lockout
by
Hank1995 »
Sat Mar 26, 2022 2:30 pm
0 Replies
32 Views
Last post by Hank1995 Sat Mar 26, 2022 2:30 pm
Trigger Wires
Replies: 1
by
Brad74 »
Tue Mar 22, 2022 6:24 pm
1 Replies
40 Views
Last post by RVRDRGN Tue Mar 22, 2022 8:47 pm
KG9 initial carb settings
Replies: 3
by
mercaholic »
Sun Mar 20, 2022 4:44 pm
3 Replies
67 Views
Last post by mercaholic Tue Mar 22, 2022 12:54 pm
Impeller Height
Replies: 3
by
mercaholic »
Mon Mar 07, 2022 9:30 pm
3 Replies
102 Views
Last post by SteveC Sun Mar 13, 2022 5:33 am
Piston rings
Replies: 2
by
Bob »
Fri Mar 11, 2022 1:54 am
2 Replies
100 Views
Last post by Bob Fri Mar 11, 2022 2:09 pm
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