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  1. #1
    Join Date
    Jun 2006
    Location
    Firth of Clyde / West Coast Scotland
    Posts
    295

    Default Suzuki Df2.5hp 4 Stroke Consumption?

    Hi all

    I’ve a new-ish Suzuki 2.5hp 4 strike for my tender; with a 1L inbuilt tank.

    I’m off for a cruise up the West coast of Scotland his week and have been paranoid about running out of petrol for it - and rowing is always a pain with 2 people and a small dog in a 2.4m tender.

    Can anyone advise what sort of range I should expect for the 1L (I can’t seem to find any stats on that)?

  2. #2
    Join Date
    Jun 2004
    Location
    Anglesey Wales
    Posts
    11,062

    Default Re: Suzuki Df2.5hp 4 Stroke Consumption?

    No 'stats' to give you properly
    However I do know those engines are very frugal
    I would purchase a 'Jiggle Pipe' (Halfords etc about £8) which will enable to re fill the inbuilt tank in pretty short order
    Plus no messing about with a funnel
    Just keep a 1 gallon proper spare fuel tank(or similar) on the tender untill you get a measure of consumption
    As a rule of thumb I would say the running time of the dinghy/tender and it's load you mention
    From the inbuilt tank will be about 1 hour at half to three quarters throttle
    Just guessing from experience mind!
    Jerk of all Trades Master of None

  3. #3
    Join Date
    Jun 2013
    Posts
    3,252

    Default Re: Suzuki Df2.5hp 4 Stroke Consumption?

    Its going to depend how much throttle you use, but when MoBo Owner mag tested the DF2.5, they measured consumption at 19nm per gallon at 1/3 throttle for a range of 4nm from its internal tank. Also determined as just over an hour.
    If found in the Brexit forum, please return to the real world.

  4. #4
    Join Date
    Mar 2007
    Location
    South of France.
    Posts
    4,068

    Default Re: Suzuki Df2.5hp 4 Stroke Consumption?

    Are you sure the tank is only 1 litre?

    I've just looked it up being a doubting Thomas! You're right of course, it is 1 litre, just seemed very small to me! The nearest I could find on fuel consumption is "Should last for hours!" …. he should have added - "Trust me, I'm a salesman!"
    Allow an hour and carry one of those 5 litre plastic cans on board! …
    Last edited by Kingfisher 5; 22-06-19 at 10:43.
    _______________________

  5. #5
    Join Date
    Jul 2011
    Posts
    309

    Default Re: Suzuki Df2.5hp 4 Stroke Consumption?

    I generally run mine at 3/4 throttle, this is due to being slightly underrated for a 2.7 with Ali floor. Any more throttle just increases fuel consumption with no gain in speed. From WOT reduce throttle until the engine speed is just dropping, this is the optimum.
    This gives me about 4.5 knots with 2 people and around 45 mins for a tank.
    Carry a 5l container.
    Use V power or ultimate and petrol additive

  6. #6
    Join Date
    Mar 2016
    Posts
    947

    Default Re: Suzuki Df2.5hp 4 Stroke Consumption?

    Hate to be a kill joy....but where are you going in this off the west coast ? Doesn’t sound too clever to me, haha. Some of the tides run faster than you’ll manage in the boat.
    Also famous for some of the wildest seas in the U.K. be safe out there.

  7. #7
    Join Date
    Jul 2011
    Posts
    309

    Default Re: Suzuki Df2.5hp 4 Stroke Consumption?

    Quote Originally Posted by QBhoy View Post
    Hate to be a kill joy....but where are you going in this off the west coast ? Doesn’t sound too clever to me, haha. Some of the tides run faster than you’ll manage in the boat.
    Also famous for some of the wildest seas in the U.K. be safe out there.
    Fair point. However by the OP using the word “tender” I assumed go by bigger boat using small inflatable as a runaround and explore up rivers

  8. #8
    Join Date
    Feb 2015
    Location
    Conwy
    Posts
    3,863

    Default Re: Suzuki Df2.5hp 4 Stroke Consumption?

    Quote Originally Posted by Kawasaki View Post
    No 'stats' to give you properly
    However I do know those engines are very frugal
    I would purchase a 'Jiggle Pipe' (Halfords etc about £8) which will enable to re fill the inbuilt tank in pretty short order
    Plus no messing about with a funnel
    Just keep a 1 gallon proper spare fuel tank(or similar) on the tender untill you get a measure of consumption
    As a rule of thumb I would say the running time of the dinghy/tender and it's load you mention
    From the inbuilt tank will be about 1 hour at half to three quarters throttle
    Just guessing from experience mind!
    Me too

    I find judging almost impossible on my 3.5 so always carry a spare 5l plastic jerry can in the tender. It's come in useful plenty! The tendency is to over throttle as there is more power than needed to go displacement speed (although not enough to plane obviously). Over throttle and mine drinks fuel at an alarming rate for it's size. However my daughter has successfully done over 10nm on a tank without the need to refuel. I have never managed more than half that. Cant leave that throttle alone me.

  9. #9
    Join Date
    Jun 2006
    Location
    Firth of Clyde / West Coast Scotland
    Posts
    295

    Default Re: Suzuki Df2.5hp 4 Stroke Consumption?

    Thanks all - so I hear the message of “carry spare fuel” which I currently do. I was trying see if I could lose some weight and go without the spare - sounds like I’m best to stick to original plan.
    Last edited by kennyh; 24-06-19 at 19:37.

  10. #10
    Join Date
    Jul 2011
    Posts
    309

    Default Re: Suzuki Df2.5hp 4 Stroke Consumption?

    Quote Originally Posted by kennyh View Post
    Thanks all - so I hear the message of “carry spare fuel” which I currently do. I was trying see if I could loose some weight and go without the spare - sounds like I’m best to stick to original plan.
    If I am going down the pub 10 mins away I don’t bother (have checked tank anyway). Any further always carry a 5l can

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