Search found 95 matches

by muddywaders
25 Sep 2019, 15:05
Forum: Motors
Topic: Twisted Prop Shaft
Replies: 11
Views: 997

Twisted Prop Shaft

"mercosil" will be printed on the starboard cylinder if not chrome bore both very hard material and may not show damage even if piston is toast.Best to remove exhaust cover by partially disassembling lower cowl as well remove inspection covers on transfer ports to see if piston is scored.Parts in de...
by muddywaders
12 Sep 2019, 15:33
Forum: Motors
Topic: Prop
Replies: 21
Views: 1790

Prop

My Yamaha dealer will let me buy props and return them in perfect condition so why wouldn't yours?Did you buy the motor there?My friend has a F25 on 15' rivetted boat with wood floors and with two 200lb men will see 25mph at wot without hitting the rev limiter(no tach) with a Yamaha 9 7/8x10 1/2 alu...
by muddywaders
02 Aug 2019, 15:35
Forum: Motors
Topic: Nissan, (Mercury / Tohatsu) 2.5 - 2 Stroke - Poor WOT
Replies: 14
Views: 967

Nissan, (Mercury / Tohatsu) 2.5 - 2 Stroke - Poor WOT

Sinkingfast is correct wot mixture is a function of main jet size,however only two sizes were offered #92 for the 2.5 and 3hp models #94 for the 3.3hp.Needle position was the only adjustment for elevation.The jetting chart I have does not cover 2002 Tohatsus so it is possible other sizes are availab...
by muddywaders
01 Aug 2019, 14:38
Forum: Motors
Topic: Nissan, (Mercury / Tohatsu) 2.5 - 2 Stroke - Poor WOT
Replies: 14
Views: 967

Nissan, (Mercury / Tohatsu) 2.5 - 2 Stroke - Poor WOT

Sam your motor is equipped with a variable venturi carb that utilizes a tapered needle in the main jet.The needle has multiple grooves that hold it in the throttle/slide and can be positioned higher or lower by means of an e-clip to adjust for altitude.I suspect you need to raise the needle(richer)....
by muddywaders
29 Jun 2019, 18:28
Forum: Motors
Topic: Info on this Yamaha.
Replies: 3
Views: 544

Info on this Yamaha.

I believe your motor to be a mid eighties "international model" as per Crowley Marine website.m.w.
by muddywaders
12 Jun 2019, 18:56
Forum: Motors
Topic: Power trim and tilt vs underwater objects?
Replies: 14
Views: 1668

Power trim and tilt vs underwater objects?

What you want is a breakaway plate which is a jackplate that pivots at the top when you hit an obstacle.A proper breakaway plate should have a safety strap or some type mechanism limiting its travel.I have hit a log at speed without power-trim and the lower unit swung up nearly vertical breaking the...
by muddywaders
07 Jun 2019, 15:08
Forum: Trailers
Topic: Trailer spindles too short
Replies: 6
Views: 1274

Trailer spindles too short

No need for washer as long as nut is only contacting inner race of bearing.Chad I noticed you have a 89 Montero.I own a 89 ram 50(Mitsubishi mighty max) 4x4 that was supposed to be a temporary vehicle but has proved to be very reliable despite having a complicated emission controlled carb.How has yo...
by muddywaders
15 Apr 2019, 14:06
Forum: Electrical
Topic: Some thoughts on batteries for small tin boats.
Replies: 15
Views: 2599

Some thoughts on batteries for small tin boats.

Great thread on The hull truth about guys building their own 12v lithium batteries.Lipo4 and Lito cells can be fully discharged with very little voltage loss,charge quickly and will last 20 000 cycles.Incredible energy/weight.
by muddywaders
15 Apr 2019, 13:36
Forum: Electrical
Topic: 94 Mercury 25hp ignition/kill wiring
Replies: 4
Views: 638

94 Mercury 25hp ignition/kill wiring

If this is a Commander control chances are the key switch is broken or has been disconnected.The stop circuit wire(blk/yel)will be found at the lanyard kill switch and then go to the key switch(if these wires are not color coded it will be the one not grounded when key is on).Test the key switch-wit...
by muddywaders
14 Apr 2019, 22:58
Forum: Boat House
Topic: Recommended fuel hose assembly?
Replies: 10
Views: 1121

Recommended fuel hose assembly?

Yamaha makes excellent fuel lines,primer bulbs and fittings that are compatible with Mercury(not bayonet style)
by muddywaders
13 Apr 2019, 14:00
Forum: Motors
Topic: 1998 Mariner- Mercury 20 or 25
Replies: 3
Views: 493

1998 Mariner- Mercury 20 or 25

20hp model has WMC 32 carb.25hp has WMC 31/31A.m.w.
by muddywaders
31 Mar 2019, 12:54
Forum: Motors
Topic: 1996 Mariner 25HP Cold start
Replies: 18
Views: 1662

1996 Mariner 25HP Cold start

The Yamaha mariner will plate|sticker on the transom bracket with model and serial # with made in Japan on it.The Mercury will have serial # on the mid-section and will be made in usa ,Canada or Belgium.m.w.
by muddywaders
31 Mar 2019, 00:42
Forum: Motors
Topic: 1996 Mariner 25HP Cold start
Replies: 18
Views: 1662

1996 Mariner 25HP Cold start

I assume were talking about the Mercury/Mariner and not the Yamaha/Mariner if so you may try priming twice.You can verify the primer operation by shining a light through the carb with throttle open(motor off)while pulling the choke knob and you should see fuel squirting.m.w.
by muddywaders
21 Jan 2019, 22:08
Forum: Boat House
Topic: What to use on the bottom?
Replies: 8
Views: 1667

What to use on the bottom?

While Gator glide and G-flex will seal leaky rivets not sure if they prevent them from coming loose.These type of products are popular with duck hunters as they act as a wear layer that helps aluminum boats slide over mud,sand,grass etc.
by muddywaders
21 Jan 2019, 21:18
Forum: Motors
Topic: While looking for an Evinrude part on Ebay....
Replies: 8
Views: 1189

While looking for an Evinrude part on Ebay....

Looks like a Tohatsu clone like Parsun motors which are copies of Yamaha with parts being compatible.How can Chinese carbed 2-strokes be imported while Japanese motors cannot?