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    Yamaha C90 Shift adjustment-Powerhead or Control box

    My '99 C90 Serial L/500718/U starts to throttle up prematurely when I select reverse. It's starting to rev just before reverse engages which makes for sloppy manoevering! I've tried adjusting at the powerhead but that didn't work out - no reverse gear at all! I also looked on here but couldn't...
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    C90 Trim'nTilt Removal and Rebuild Kits?

    I'm hoping you experts can once again help me with some expertise. My '99 C90 Serial L/500718/U has been acting up and getting air in the hydraulic fluid. I realised I had a problem when it sometimes refused to tilt down until I dropped it with the manual release valve. I changed the fluid and...
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    3.5 Merc Cuts out after a few minutes

    Year is approx '94, Serial Number: 06202173 Model Number: 1003203 I'm hoping someone can help with this one. This is the simplest form of 2-stroke engine so there's very little to go wrong/check but it's beating me! Symptoms - starts and runs OK at low revs but when throttled up to 50% or more...
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    Parts en route - Manual no help -Steering Bracket Bush

    Hi Guys, I'd really appreciate a few pointers on this as the Yamaha manual now I've found it isn't a lot of help. It shows how to dismantle everything but doesn't specify what needs to come out to replace the steering bushes or indeed whether they just drop out or need some tools to...
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    F100 Steering Bracket Bush replacement?

    Hi Guys, I recently bought a 2000 F100 model/serial#67F13437-40 as part of a package. I've found the lower steering tube bushes are shot - like an eight of an inch play at least. Can anyone outline the repalcment procedure as it looks like the powere hed has to be lifetd to repalce these. I did...
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    F100 Trim Down problem

    After a long road trip which may just be coincidence my down trim doesn't want to work. The pump motor runs but seems to be runningh offload and nothing happens. I had to lean hard on the engine to get it to go down. It lifts nice and postive every time but won't go down. Cna anyone suggest the...
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    Black Stator replacement Merc/Mariner 75hp 3Cyl

    Season's Greetings!<br /><br />I just got the chance to buy a used red stator kit 398-832074 A 4 which I believe should fit my '93 engine currently fitted with its second black stator. <br /><br />I'd appreciate anyone able to tell me is this a drop in replacement or just what is involved in...
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    Mariner S/N not recognized at mercpartsexpress?

    Thanks to all the help I got by just reading through the old S/N posts here I found my serial number. However it isn't recognised when I go to order parts (impeller kit, plugs and zinc anode) on the mercpartsexpress<br />...
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    Crankshaft Drive Splines toast

    Has anyone any ideas for repairing a crank where the stainless drive shaft has just spun inside the crank?<br /><br />I think it's a case of replacing the crank but that's going to be expensive even if I could track down a used one. <br /><br />The crank is out of the engine and it's a low very...
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    Winterized '91 Mariner 75 Stator now dead?

    Engine winterized 20 months ago then wouldn't spark. Found and fixed loose flywheel magnets - still no spark. Got the diagnostic procedure and relevant meters and wroekd through the system. The stator is reading Open (5MegOhms) Blue to Red so that explains no spark.<br /><br />I've two questions...
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    Flyaway Flywheel Magnets - Puller details? Reattachement procedure?

    First off I'd like to once again pay tribute to the wealth of information and experience made available here by so many experts. Once again determined research of previous posts has given me the information I needed to track down a problem I've never heard of on any engine. <br /><br />I'm...
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    Online Mercury/Mariner Manuals 'broken' or is it just me?

    Using a direct link to a particular page on oil-pumps I can read the .pdfs here <br /> http://www.biggerhammer.net/mercury/factory_manuals/Service%20Manual%20PDFs/TwoStroke/824052r3/3e.pdf <br /><br />However when I try to look at the engine I'm interested in - a 3cyl 75 or indeed any other...
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    Lower Unit No LongerHanging Up - Merc/Mariner 70 Hp 3cyl

    Hi Guys,<br /><br />I've got the Lower Unit Blues but baaaad! I've read most if not all of the posts here on this popular topic before I attempted to drop and open the LU on my newly acquired '81/2/3 70 HP 3 Cyl Mariner/Mercury S/N is 6074129. It hasn't had an <br />impeller in 3-4 years and...
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    Manual - Clymer or Seloc or ? preferred?

    I'm trying to get a manual for my early 80's 3Cyl 70. Some suppliers are telling me to allow up to 8 weeks for delivery from the US to Ireland so I want to make sure if I have to wait I get the best one! I definitely want good wiring diagrams as the separate hydraulic unit has a few 'stragglers'...
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    Mariner 3Cyl 70 LU - Reverse not engaging

    Hi, First let me say this is my first post after 'lurking' here for a while. This is an astonishing resource of accumulated knowledge and I'm hoping one of you experts can help me out.<br /><br />The 'new' engine starts fine and engages foward after a little 'clacking' - seems normal but I...
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