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    Suzuki DF50 tilt limit

    Hi, I am trying to set the tilt limit following the procedure in the owners manual. When I get to the part where I hold up for 3s and get 2 beeps nothing happens. If I instead hold down for 3s, I get 2 beeps and then I can set the down limit. The manual doesn't even say the down limit can be...
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    DF140 oil cooler failure

    I've got a 2003 DF140 and the oil cooler let go draining the oil and alarming. After I worked out the problem I changed the cooler and oil and it idled OK so I took it for a low rev spin. After about 10 min I got a knocking noise and stopped the motor. Changed the oil which was milky. Still has...
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    2004 50hp etc manual required

    Hi everyone, The tilt motor appears to be gone on our sailing clubs motor. Does anyone know where I can get a service manual download? Thanks
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    Suzuki DF140 O2 Bolt problem

    I have a 2003 with 240 hours and reading all the O2 bolt posts I looked at my bolt and it is corroded on the outside so I want to replace it. The casing is still ok from the outside. The problem is removing the old bolt. I could weld a nut or easyout but I am concerned this would damage the case...
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    Suzuki DF140 lacks power - one cylinder down?

    I have a 2003 DF140 with about 220hours. I bought it just after the 200hr service but it does not seem to have full power - quite sluggish but eventually gets near full revs. Mate said it could be down a cylinder so I thought why not change the plugs. During the change I found cylinder 3 plug...
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    Oil in Cylinder

    Hi everyone, I have an oil injected Yamaha 50Hp 1990 50DETO Its winter here and I have found that if I don't use the boat for a few weeks I get a build up of 2 stroke in the cylinders which I have to empty before I can start the motor. Any ideas where this could be coming from? It didn't used...
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    Charge Coil Problem

    G'day, I was out today in my Yamaha 91 50DETO and it just stopped and when I went to restart it seemed to have no spark as though the kill switch was on. After paddling in I decided to check out the coils since the motor had recently had a submersion. The pulser coils all measured around 200...
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    Yamaha 1990 50Hp Manual

    Hi everyone, I have a 1990 50Hp Yamaha outboard. In Australia it has the model number 50DETO but in the parts catalogues online it appears to be a 50ETMLD. Does anyone know where I can purchase a genuine Yamaha service manual? Our dealer says it is no longer available. If not what is a good...
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    Oil Injection

    Happy new year everyone, I hope it is mostly spent on the water!<br /><br />I have a 50HP 1990 Yammy 50DETO. Testing the oil injection as per my Clymer manual I get 1.1 ml of oil where the book says I should get 1.4-1.8cc.<br /><br />Does anyone know the likely cause? I get the same on all...
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    Torque setting

    I have a 10RL76H Johnson which is a trolling motor and has only 10Hrs use. Can anyone tell me the torque settings for the cylinder head bolts. Thanks
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    Cylinder head bolts

    I have just had my powerhead reconditioned and I am reassembling the head. The Clymer manual says to put Loctite 271 on the head bolts but I think the general view is a light coat of marine grease is better. Is this correct?<br /><br />Also after 10 hours I need to retorque the head bolts. I...
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    Coil Resistances

    I have a 1980 9.9Hp Johnson 10RL76H. Can anyone tell me the coil impedances? The only manual I can get is the combined manual which I don't really trust.<br /><br />Also what is the purpose of the cotton swab that is on the back of the charge coil and rubs against the rotor?
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    Throttle linkage

    Hi, I have a 1980 9.9Hp Johnson 10RL76H. I was cleaning the carby and lost the throttle linkage. I guess I will have to make a new one. Can anyone tell me the distance between centres?
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    Thermostat operation

    I have pulled the thermostat from my 1990 50DETO (Australian) motor. My Clymer manual tells me to test to the temp written on the thermostat flange. I can't find this temp. It opens at 120F and opens at least 3mm. Does anyone know what the correct temperature is? As the thermostat is 15 years...
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    Strange spark test

    I have a 1990 50Hp Yamaha and it was running rough so I did the spark test and found #2 had no affect removing HT lead. I then swapped #1 & #2 plugs and the engine would not start. I then replaced the faulty plug (now in #1). I repeated the lead test and found #1 & #3 ok but #2 makes the idle...
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    Rough Idle

    I have a 1990 50DETO Yamaha. It is not idling well. I have cleaned the carbies, replaced the fuel pump, replaced the fuel tank and cleaned the filter. The motor runs intermittently well and then will not idle or accelerate properly. 10 minutes later it runs well again.<br /><br />I decided to...
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    Charge coil resistance

    I have a 1990 50DETO Yamaha. According to my Clymer manual the charge coil resistance should be 368-532. I measure 190. Should I replace this coil? <br />The motor is running intermittently. I also found one of the ignition coils was high resistance so this may be the culprit, however, whilst I...
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    Idle adjustment on triple carbs

    I have a 1990 50Hp Yammy 50DETO.<br /><br />According to the manual and other posts it appears that at idle the top and bottom carbs should be closed and the middle carb will be slightly open to set the idle speed.<br /><br />Is this correct? Isn't it normal to have all carbs synchronised?
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    Pilot screw adjustment

    G'day,<br /><br />I have a 50HP Yamaha (50DETO) and I want to tune the carby. According the the Clymer manual the carby should be stamped 62X00 with a 130 main and 62 pilot adjusted to 15mm float and 1.75 pilot screw. My carby is stamped 6H511 ED20 with a 135 main and 62 pilot. According to the...
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