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    Lower RPM OK ??

    I have a 1999 Yamaha Vmax P150TLRX, carburated on a 18.5 Skeeter. Normally not in a big hurry to get any where so I cruise around 3500 to 4000 RPM . Boat planes good and rides well. 2 guys around here have told me if I don't run this engine harder, 5000 plus I am going to do long term...
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    Over heat lamp

    Looking for some direction before I start working on something that may not be broken. I have a 99 Skeeter ZX185 with a 99 Yamaha Vmax When I turn the start key the oil lamp on the console lights up for a short period , the over heat lamp beside it never comes on. I bought the boat used, and...
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    volts needed to start 150 Vmax

    Can anybody tell me what is the minamul volts needed to start a 99 150 Vmax if all else is good on the battery? I am running a lot of electronics on my start battery and want to set a low volts alarm on my sonar. Have set down to 11volt alarm but it goes lower than that while cranking. Thanks, Paul
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    Motorguide shaft end play

    I bought a used 2005 Motorguide 24v Pro Series 70 trolling motor Runs fine, looks to be hardly used. However the prop shaft has about 1/4 inch endplay if you pull / push. Never seen this much in the smaller MG's I have owned. Is this normal ? Thanks, Paul
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    Yamaha control cable pinout

    I have a 99 Vmax P150TLRX Can someone provide the wire/pin ID for the 10 conductor cable that runs from the engine to the remote trim, start switch, etc ? I have a Yamaha service manual for this engine but the cable shown in my bool is different. Thanks, Paul
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    replace power trim cable - any tricks ??

    Hi, I have a 99 Yamaha Vmax P150TLRX Will not trim down with the remote when engine is turned hard to the starboard side. (only in this position) Trim switch at the engine works at all times. I have determined it to be in the cable inside the flex hose between the engine and the boat hull. Can...
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    How to mount Moeller

    Hi, I bought a Moeller 10 um filter/water separator to install on my 99 Skeeter ZX185 with 150 Yamaha Vmax First attempt I made a block, inserted 3/8 carriage bolts and epoxied the block to the plastic fuel tank. Competely degreased the tank and used the correct type epoxy, however it came off...
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    B.P. filter/separator

    I want to install a 10um fuel filter water separator on my Yammy 150 Curious if anyone is using the Bass Pro brand. 10um 60 GPH for $25 Sounds to good to be good?
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    Yamaha oil injection

    99 Yamaha Vmax P150TLRX First engine I have owned that I did not need to premix oil and fuel. How dependable is this injection system? What preventative maintenance needs to be done to keep it working well ?
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    water gauge winterize ??

    I have my first boat with a water pressure gauge. ZX185 I fish all winter and temps here can drop to around zero. Boat is kept inside, but no heat (barn) Would like to see what everybody thinks about disconnecting the water supply line or installing a drain valve ? Appreciate the input
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    rodbolt , you still out there?

    Sorry taken awhile for me to get time to run the test Test results are in the old post "replace all Yam carbs chapter 2
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    replace all Yamaha carbs Chapter 2

    Guys, some of you are familar with my first post "replace all carbs" last week. I now have the boat back after paying $275 restocking fee for the carbs, which they still didn't have one of. Mad as hell but not worth a fight. I have been through the carbs and they are as clean as can possibly be...
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    replace all carbs

    I have a 99 Yamaha Vmax P150tlrx. Been in the shop over a month due to no top end power. Carb rebuilds, new fuel pumps, decarb engine, plugs. Got a call from the mechanic yesterday and he said they finally found the problem. They put all 3 carbs on a flow meter and they are working very...
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    correct prop / wrong RPM ? WOT a must ?

    I have been reading thru the prop forums to be sure my boat is propped correctly and I think it is, but now I am confused. I have a 99 ZX185 with a 99 Yamaha Vmax 150 (carbed) Since I am a big tight wad I like to run it around 3500 RPM to save fuel and it still goes plenty fast for me. It will...
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    Best service manual

    I would appreciate your opinion on the best service manual to buy for a 1999 Yamaha Vmax 150 Something pretty detailed. Thanks,
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    Yamaha Vmax losing power

    Hi All, Engine is 99 Vmax 150 Problem started by losing power and stalling when coming up on plane. After getting on plane would only run 4500 RPM and shuttered (use to run 5600) I put new Yamaha fuel pumps on , no help. Went thru all the carbs, they were very clean. No help. Checked fuel...
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