150 Boat Motor

If you are comfortable taking motorcycles apart, you should have no problem. The outboard has the same style roller bearing rods, but with fracture caps instead of pressed pins, and the small end is free timken style needles-which require some tools and finesse to get back together.

If you know a good reed valve from a bad one (read new) and can get them to seat flat. You will have a ball.

The head gaskets can be put on upside down, and the spaghetti seal round the crankcase wants a little pre load.

The rings have little alignment pins in the piston to keep them from floating into the cylinder ports, so you need to know when one of those is un-happy, before assembly.

But ya -anybody can do it.

2009-05-31 19:05:32 by bobby

Drag boat motor 468 blown

motor year is 1997. all electrical coponents have been changed and did not make any diference. started having problems when lower unit was replaced. have taken it to several repair shops. no one can figure it out. please help?

fuel feed problem?

carboning up in cylinders.

Do you have original prop size and pitch on the lower end?

2006-06-07 14:20:13 by ivan

ok I just bought a 19"6' Kingfisher Bass boat it has a 150 horse Yamaha Pro V Two stroke outboard engine now the boat is a 1990 Model but the engine looks newer but might not be i took it out yesterday and ran it it only ran 36 mph; now i think that it should run faster but i don't know? I want to know how fast the boat should run? also the boat is really hard to steer do you have any hints on how to make the steering easier? Thank you.

Derek,

For what you have and for what you paid, 36 mph is fast for any boat, and certainly so for a 1990 model production bass boat.

A real avid bass fisherman that has a 50 footer he lives on next to me in our Marina in Galveston Bay - also has a 20 foot Triton that he says will do 50 and (for a part-timer) he has won more tournaments than anyone I know of around here. A lot of people come around to ask - and his comments are always the same - "Get a bass boat for the right reason - fishing. If you want speed don't get a bass boat get a racing boat and you can save all that money on fishing gear for that stuff that goes in your gas tank. Fish don't know or care how fast you boat goes or what kinda motor you have."

For comparison, the world record (link below) for a 150hp outboard bass boat is 92 mph. And that is on an Allison boat - who builds their hulls with hull rigidity and strength as a paramount goal. You can buy an USED Allison XB-2002 Bass boat for between $35 to $40,000 (based on location and condition). New - these babies are totally out of reach financially for the average bass fisherman.

What you may not be aware of is that the hulls shape, design, weight, balance, and rigidity, has a huge impact on speed (or maybe I should say - lack of it). This is why so may boaters are terribly disappointed when they go out and buy a new motor with 50 more hp - and end up gaining 5 mph (or so) of speed.

In my opinion, you bought yourself a great boat, most likely at a great price - it runs, and at 36 mph seems to run pretty good - you should be thrilled! About the only thing I know of you could do (if you are that concerned about it) is check your prop. There are different props for thrust, power, and speed - most production boats and outboard motors (no matter the age) come with, and still have a middle or the road prop. For little money, you could get a speed prop - it will probably do as much as another 50hp.

As far as your steering goes, just check out your linkage or hydraulics, change out fluid and pump (if any). It is after all a 20 year old boat...
Happy & Safe Boating,
John
http://boatwrights.org

2010-04-07 12:14:18 by Derek

Price: $147.71

The outer shell is tough, abrasion-resistant polyester.
Acrylic coating keeps the cover waterproof and UV-resistant
The inside lining is a soft, non woven polyester backing that provides a cushioned barrier around the engine cowling

there are three different thing,s that will set the alarm off,,,first is oil mixture sensor,second is rev-limiter,help,s control of over racing the engine,and third is the temperature,of the engine,any one of these means you should check the engine,my boat has one,and the last time it went off the water pump was going out,and the motor was running,,just a little hotter than it should have,,but lucky for me i checked it,,and it helped save my motor,,and really that,s the job it was designed to do,,so you might want to take a little time and look your engine over,it may help save your engine too.

2006-06-19 18:37:51 by ted s

Its power generated by the engine. Somewhat like an alternator on your car but much weaker.
Mainly used to recharge the starting battery.
But if no battery is present (no significant onboard accessories) its wired into the navigation lights (red/green=port/starboard)

2010-06-14 18:18:36 by tlcm18