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Just a thought,

How restrictive is your exhaust system? You could buy a "colortune" kit which has a special spark plug with a clear window in it to allow you to see the colour of the combustion flame, and then obviously to see what happens when you make adjustments.

John

Does it hesitate if you put your foot down suddenly? If yes, it's a carb issue and that means cleaning all the jets, checking the accelerator pump, float level / fuel level. Lack of power could be down to slightly lower compression, so a compression check might be helpful. Timing could still be out ...

It's a nut as already posted. You can replace it or just take it off and get a new "wing" welded on, I doubt you will want to use the hand crank very often to start the Haflinger unless you are going to allow the Dynastart to fail electrically and just provide the cooling air, in which case it would...

Doesn't need paint, just needs some off road time, soon be covered in mud!

Four stud manifold is for a Zenith NDIX 32 Carb. Same carb can be found fitted to various vehicles, MOG's, Porsche and several other I can't remember at the moment. The major difference will be in the size of the jets and the replaceable venturi, if you get one from a different vehicle. Obviously, y...

In which case, you have a fair amount of investigating to do in order to work out what's wrong. Get all four wheels off the ground. Spin each wheel in turn, would be good if you had either a proper mechanics stethoscope or at least a nice long screw driver stuck against your ear whilst someone turn ...

If you apply some heat to the castings with a hot air gun and get the casting nice and hot round the bearings, they should come out without any problems. Try to have the new bearings to hand so you can put them in whilst the castings are still hot. This means having either "proper" bearing drivers o...

Better than the trailer tyres as they are "All weather" tyres and they are actually designed for a powered vehicle. You Haf will still go a bit slower (top speed) on these compared to the Mayolas as those are probably 165 / 80 / 12 although they did make Semprites in a 145 / 80 / 12. If you want to ...

Those will work fine for pure road use. They won't work very well off road, but you will still be able to do farm tracks without any issues! Just don't be surprised if you don't go as fast as with other tyres as those are 145 / 70 / 12 so side wall is only 70 % of the tyre width. The original 145 ty...

As the Haf is low speed, it shouldn't be too much of a problem as long as you regularly check them for tightness. Are your wobble nuts, flat or conical where they touch the wheel holes? Flat would be better if your wheels do not have countersinks on the holes.

John

Go for a drive in the snow, come back home, wash salty slush off - During the summer you check and make sure the paint good with no hole. Treat any that you find. - Use vehicle all year round.

John

Query on your data table:- The Mini apparently has 12 inch tyres and Haflinger has 24 inch? Neither are true of rim size, Possible true for the Haf as wheel diameter, but definitely nor true of the Mini wheel diameter. Does correcting this erro make any difference to the position of the Mini in your...

I think it is far more likely to be a slightly bent drive shaft due to slightly worn fulcrum pins. That will load a bearing on one side and cause a bit of noise which then because the shaft can go up and down, the loading will change. Lurch does the same thing, so I would guess it is quite common. J...

Brake pedal has very little play, and I have to STAND on it to stop. Capital letters for emphasis. I also learned that the pedal is not traveling far enough to turn on the brake lights, or there is an issue with brake lights... No brake lights now . I'll look at the pedal assembly this weekend. Won...

Most Haflingers are single circuit brakes.... The manual does show a dual circuit brake system which I though was for the "Utility" versions which carried addition loads as standard, but might also have been a "Pathfinder" American concession. If there is very long pedal travel before hitting a "wal...