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Points setting on a 1975 f11 250 kawasaki - Motorcycles

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Hello! I have a 1975 Z1-B 900. I rode it about two weeks ago. It ran fine. About a week later, I went to start it up, and it would only run on two cylinders, No. 1 and 4. I have replaced the spark plugs,...

Your motorcycle has two sets of points. Each point set operates one coil or two spark plugs. You can try cleaning the point contact surface with a point file.The point may be worn and grounding out to the frame. The bike may need two new sets of points properly installed and timed to run on all four cylinders again. 1st -- Adjust gaps -- Do this separately for each points set. Turn crankshaft clockwise using 17 mm wrench to widest points opening and adjust gap separately for each set of points at 0.3-0.4mm (.012-.016 inch). Each points set has two base screws to very slightly loosen thereby allowing movement to open or close gap, then retighten after setting gap. The widest gap happens when the heel is resting on the highest part of the cam. At this stage nothing but the gap has been adjusted. But this is important because proper gap does affect the subsequent timing procedure. And other screws have remained tight.

2nd -- Set Timing -- Each points set has two mounting screws and pry slots which can be used with strobe light (after slightly loosening the two mounting screws) to align the respective F marks with the timing mark. But if the adjusting plate doesn't travel far enough to allow correct adjustment, then loosen the three mounting plate screws and move the mounting plate.

3rd -- Tighten and recheck --Tighten all screws and recheck timing with strobe light.

Aug 16, 2011 | kawasaki Z1B Motorcycles

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What is the spark plug gap for a kawasaki ke100 1975

.35plug gap .. points .12 to .17 or a match book cover is around 13+14 1000s of an inch ,,cdi pick up coil gap .30 should be fine

Jul 05, 2010 | 1987 kawasaki GPZ 500 S - GPX 500 R

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I just purchased a honda cb250 1975 no spark

If there is no spark your points are probably dirty or just grounded out. Try a new points and condenser set. Install the points carefully so the new set does not ground. I assume you already tried new spark plugs and spark plug caps.

Jun 06, 2010 | 1972 Honda CB 250

2 Answers

Accidently moved timing base plate whil trying to adjust points now bike refuses to statr how do I reset without adjusting the timing by wat of the timing chain

moving the base plate is how you adjust points. sometimes there is marks/scratches where the screws were tightend onto the base plate. try to line them up with the screw head.

Dec 22, 2009 | 1975 kawasaki Z1B

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Kawasaki, Engine Number:- Z1E 24775. Just curious what year and model it is from?

The Z1 series engines were produced throughout most of the 1970's up to 1979. The engine would have been installed on the Z1F frame. That's all I know about the Kawasaki in that timeframe...hope it's enough for you.

Nov 20, 2009 | 1975 kawasaki Z1B

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I have a 1078 z1000 with no spark does this have points and a condenser?

You may have a bad on/off kill switch or wiring defect.
If unit has electronic ignition you will need to do some tests on it to find the problem or find a friend that can help or a good service tech to help you out.
Also some bikes need a good hot battery to start.

Oct 06, 2009 | 1975 kawasaki Z1B

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