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  1. jack daniels marine

    Suzuki DF 150: which thermostat, 122 or 160 deg F?

    The displayed engine temperature has been a bit unstable recently, it usually sits @ 56 deg C or 133 deg F. The temperature has been up to 80 C / 175 F a couple of times. The thermostat is the original from 2015 so I'm planning on replacing it. The catalog shows two choices: 122 or 160 deg F, (...
  2. jack daniels marine

    Honda BF10 anode location

    2008 BF10D. the maintenance schedule says to check and/or replace the internal engine anode. When i google the engine anode, there are plenty showing up for sale. However in the Honda parts catalog for the BF10D I can't see it anywhere, neither in the diagrams or lists of materials. I guess...
  3. jack daniels marine

    Buying: Yamaha 15 hp 2 stroke 1990, what to look for?

    Im looking to buy a small used 14ft boat for my kids with a 2 stroke 15hp Yamaha. What should I look for when checking out the motor? It can be run on a hose or in a barrel, but I can't test it on the water. How do I spot gearcase slack or trouble? engine wear, charging, carburetter problems...
  4. jack daniels marine

    Suzuki DF150 "change oil alarm" "P-oil"

    The boat is equipped with 1 Suzuki Digital SMIS gauge. two alarm tones sounded at startup at sea yesterday, " Change oil alarm" was displayed in text. After silencing the alarm, a small rectangular symbol remained showing "P oil" I would have guessed that that the letter "P" would have...
  5. jack daniels marine

    Suzuki DF150 spark plug lifespan / change interval ?

    This motor is a 2014 model with 190 hours on it. I have not inspected the plugs. How long can they be used before performance deteriorates? The Suzuki owners manual only specifies " inspect every 12 months or 100 hours". There is no change interval mentioned. The boat just seems a bit...
  6. jack daniels marine

    DF150: fluctuating "engine voltage" on NMEA2000 gauge

    The "engine voltage" reported via the NMEA2000 network and displayed on the Suzuki multi fuction instrument & and the Garmin GPSmap fluctuates from about 14.4 - 14.8 over a period of 5-10 seconds. It's the fluctuation Im concerned about not the voltage value. I've installed a Blue Sea Systems...
  7. jack daniels marine

    DF150 thermostat: 120 vs 160 deg.

    2014 Suzuki DF150 Hey folks, There are 2 original Suzuki thermostats available for the DF150. 122 deg F and 160 deg F. I use my boat in water temperatures down to 40 deg F in the winter and up to a max. water temp of 72 deg F in the summer. I do only about 60hrs per season , mostly in water...
  8. jack daniels marine

    DF150: fluctuating voltage / instruments unstable

    boat and motor 2014. Suzuki DF150: I was out on the water a couple of weeks ago. I accellerated from standstill rapidly. The motor died before it hit 2000rpm, the 15A sub fuse to the ECU was blown. I replaced the fuse, and all seemed ok at the time. ...Except that the Airmar DownVu sonar was...
  9. jack daniels marine

    F100 oil change volume ( F80/90/100/115 )

    Hey folks, I've never changed the oil on an F100 before and I want to take enough with me when I go up to the boat next time. The manual says 4.3 liter + filter. So does the labell on the motor. However a service chart from yamaha at my local dealer says 3.7 liter. Is 4.3 the factory fill vol...
  10. jack daniels marine

    broken annode screws / relocate lower annode

    Hi folks. The lower annode on my F100 hung loose. One M6 screw had broken. The other was part way out, but seized. Despite a very careful application of torque, the remaining screw broke. The screws are located fairly tight into the transom which makes it a bit difficult to drill out...
  11. jack daniels marine

    F100 shift rod, lower unit removal

    Hi folks, 2005 F100. This is apparanty the same as F80 and F90. I plan to remove the lower unit to replace the impeller soon. How is the gear shift rod attached to the lower unit? from what I can see in the workshop manual, it's not attached at all, and should just lift out. last season I...
  12. jack daniels marine

    antifouling, new over old. Primer.

    Hi folks, I have a 2005 fibreglass boat, 19 ft. The boat is used in seawater, but is moored in a fresh water river when not in use. When newthe boat was coated with 2 component primer and self polishing antifouling. however after that it looks to have had another coat of primer , probably a...
  13. jack daniels marine

    F100: replacing the hydraulic tilt oil

    Hi folks. My F100 is 9 years old and has probably still contains the original tilt oil, so I want to replace it completely while the boat is on a trailer. This motor has just 1 piston. Is suction the only way to get the old oil out? in which case will this sequence work ok?: 1. suck ( with...
  14. jack daniels marine

    prop damage: can this be fixed?

    05 Yamaha F100, standard prop. Is this damage serious? the gash is about 9/16-5/8 in. deep/ 16mm. will it be ok to bend the gashed peice back to shape with a small adjustable spanner, or will this type of damage cause caviatation or vibration that will affect the prop shafts bearings for example.
  15. jack daniels marine

    Anode: how often should they be changed

    I have a 2 stroke 40 hp DT40 suzuki outboard. There's a trim tab anode which looks pretty much brand new and a second anode on the transom clamp bracket which looks allmost new. The anodes have probably been there a few years. Boat trips are only in saltwater, however the boat is allways...
  16. jack daniels marine

    Terhi Big Fun, drilling holes

    Hi folks, I have a 1997 Terhi big fun which is made from ABS plastic with foam in between the inner and outer layers. I want to mount a Garmin echo 150 transducer on the transom. Is it ok to drill 2 of 5/32in holes , 1 in deep into the lower transom of such a boat? I dont know if the area is...
  17. jack daniels marine

    clear coat paint, suzuki DT40

    I plan to touch up some corrosion on my 1997 DT40 soon. Can I use a proff. quality automotive clear coat spray can or should I find a clear coat specific for marine use? The corrosion is on the lower unit under the water line. I will probably use a dremel or similar to polish it off. I have...
  18. jack daniels marine

    outboard gear oil, DT 40, 1997

    I have Valvoline Durablend synthetic blend 75w90 GL-5 automotive gear oil available. part nr. 15300. Is this suitable for a DT40 outbord gear case? The text on the bottles state: "for all hypoid gearsets" my experience with motocross bike gear boxes is that when they fill with water due to...
  19. jack daniels marine

    frost and Ice damage

    Re: frost and Ice damage with the motor tilted up: should water drain out , right down to the water inlets, the plastic grills in this photo? what are the two holes near just over the cavitation plate near the oil flush port? water drains out here too.
  20. jack daniels marine

    frost and Ice damage

    1997 DT40 Hi folks. I bought my first ever boat just last summer. The boat is used only in sea water however my mooring place is about half a mile up a river so the engine gets a good flush with fresh water after every use. The temperature here has been about 0 - 40deg F ( 5 to -15 C )...
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