Search found 5 matches

by Hippo
Sat Sep 01, 2018 11:45 am
Forum: REPAIRS and MODIFICATIONS
Topic: Mercury 90-HP: Shearing Flywheel Key
Replies: 5
Views: 1951

Re: Mercury 90-HP: Shearing Flywheel Key

Thanks for all the feedback. If it happens again, I at least know what to look for. I tested the boat (with new flywheel key installed) extensively yesterday for an hour, and it went fine. I'm hoping that the first time the key sheared it was because the flywheel nut was not sufficiently torqued. Th...
by Hippo
Tue Aug 28, 2018 1:22 pm
Forum: REPAIRS and MODIFICATIONS
Topic: Mercury 90-HP: Shearing Flywheel Key
Replies: 5
Views: 1951

Mercury 90-HP: Shearing Flywheel Key

I replaced a bad stator on my 2001 Mercury 90-HP two-stroke, not realizing that my lower unit had seized up and the gears were frozen. As a result, when I started the engine up, the flywheel key sheared. I replaced the lower unit with an aftermarket SEI product,and installed a new flywheel key. Star...
by Hippo
Wed Aug 22, 2018 9:07 am
Forum: REPAIRS and MODIFICATIONS
Topic: Repair Mercury 90 Two-stroke or Re-power
Replies: 6
Views: 1972

Re: Repair Mercury 90 Two-stroke or Re-power

Thanks for all the feedback. I have purchased an SEI lower unit rather than going for a new engine, and will be installing it this weekend. The three-year warranty made me feel more comfortable than buying an old unit off eBay. Phil, I will check the engine mounting and also try a new prop. Thanks f...
by Hippo
Mon Aug 20, 2018 10:23 am
Forum: REPAIRS and MODIFICATIONS
Topic: Repair Mercury 90 Two-stroke or Re-power
Replies: 6
Views: 1972

Re: Repair Mercury 90 Two-stroke or Re-power

Jim,

Thanks for the feedback. Does anyone know anything about SEI after-market lower units? They offer a new unit for $895, which is a lot cheaper than an OEM replacement. It comes with a three-year warranty too. Thanks again.
by Hippo
Sun Aug 19, 2018 5:58 pm
Forum: REPAIRS and MODIFICATIONS
Topic: Repair Mercury 90 Two-stroke or Re-power
Replies: 6
Views: 1972

Repair Mercury 90 Two-stroke or Re-power

I have a 2001 90hp Mercury two-stroke on a Dauntless 160 (2001). A seal leak allowed seawater into the gear housing, and everything has locked up, so I am going to have to replace the lower unit. Also, the tilt-trim motor leaks. Otherwise, I have maintained the engine and it seems to be in good cond...