Question about 1978 kawasaki KE 125

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How do i disconnect the oil pump/injection system, Fuel oil ratio

1978 Kawasaki KE 125. I'd like to dissconnect the oil injectio system to the cylinder and just mix the gas/oil. What's the proper ratio given todays new hi preformance oils and what might be the best oil brand and type to use.



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Hi Dan,
Why do you want to disconnect the vital oil supply? If you are experiencing too much blue smoke or plugs oiling you can adjust the amount of oil fed to the engine via the secondary oil pump cable,the one that splits off from the throttle to the carb.
If you disconnect the cable it also stops the oil pump sending oil to inlet, winding out adjuster increases oil screwing in reduces.
As for ratio? trial and error as No knowledge/specification is available for Oil injected engines, poss 25:1 to start but don't blame me if you seize?
Quality synthetic oil is always a must, did you know you can also purchase smokeless two stroke oil?
Good Luck!
Paul 'W'
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Posted on Jan 24, 2009

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If you don't want to buy a bypass kit,Just pull the side cover over the pump,unhook both hoses,put the cover back on,drain the oil mixture tank or remove it,
Safe Starting spot is 30/1 and adjust as needed(if it smokes to much come down on the oil 1 level at a time.
All 2 stroke oil for motorcycles are about the same(none are really any better than the other)

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Posted on Jan 24, 2009

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Open up the "injecter"pump cover and remove drive gear,or plug hose coming out of oil bag.
next,try "golden spectro 2stroke mix oil"at 40-1.
I would be carefull doing this,no telling if the main crank bearings will get proper lube,being the injector normaly takes care of them!!.
you MUST plug ALL hoses(mix oil)otherwise you risk sucking air into the crank area(BAD THING!)
you have a "single",you cant eliminate the pump in a "twin"(or more)cyl bike,the crank support bearings on these multi cyl engines MUST be force fed oil!!

Posted on Jan 24, 2009

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Related Questions:

1 Answer

What Type of Transmission/Gear Oil does this require?

I used automatic transmission fluid (ATF) on my two stroke CR250.
Your bike should be the same, don't forget to mix the two stroke oil with the gas.

Jun 25, 2014 | 1976 kawasaki KE 125

1 Answer

Iv got a 1978 kawasaki ke 125 .. How do i disconnect the oil pump/injection system if its a two cylinder? and im wondering when i got the bike it has two spots for spark plugs but theres a bolt in one...

A 1978 KE125 has only one cylinder. The head does have two spark plug holes. From the factory there is a bolt in one of the holes. The thought behind having two holes is that two plugs can be in the head at the same time so that the rider can just move the spark plug wire from one plug to the other during a race without needing any tools or waste time trying to install a new spark plug. If for some reason you want to disconnect the oil pump, you would drain the oil tank then put a plug on the oil pump infeed line.

Aug 22, 2011 | 1978 kawasaki KE 125

1 Answer

What is the oil gas ratio for 03 kx125

the fuel to oil ratio is 32. to 1

Oct 21, 2010 | 2003 kawasaki KX 125

1 Answer

Hello i have a 1976 kawasaki ke 125. i don't know how to fuel the bike and i already put a new top end on it. how do i fuel it, do i put oil and gas at the same time, or gas in the tank and oil in another...

take off any side covers to look for a small oil tank. This bike should have a pump that meters this oil into the gas. Put your 2-stroke oil in there.

Aug 29, 2010 | kawasaki KE 125 Motorcycles

1 Answer

Cant work out where clutch cable goes

Standard 10w30 or 10w40 motor oil goes in the gearbox. 2 stroke engine oil goes in the gas @ 4 ounces per gallon for a 32 to 1 mix ratio.
Go to the following website to view an engine parts diagram that may answer your question on the hookup >

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Apr 10, 2010 | 1976 kawasaki KE 125

1 Answer

My 1978 125 will kick off some time and run for a min then die

Dis-assemble the carb and clean it. Clean the air filter and install a new spark plug.

Feb 08, 2010 | 1978 kawasaki KE 125

1 Answer

What reatio of gas to oil? And what kind of oil?

32:1 / 40:1 will be fine.... your choice of pre-mix oil...pick your fav brand . use a ratio-right cup and make it simple

  1. Pump one gallon of gasoline into a gas can. Ads by Google
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  2. 2Measure out the proper amount of two cycle oil in the Ratio Rite.
  3. 3Pour the required amount of oil into the gas can with the gasoline.
  4. 4Shake the container lightly until all of the oil is thoroughly mixed in with the gasoline.
  5. 5Pour the mixture into the machine`s gas tank.

Jan 23, 2010 | 2004 kawasaki KX 125

2 Answers


It all depends on what type (and brand) of two stroke oil you're using. For example, some non-synthetic two stroke oils are supposed to be mixed at a ratio of 20:1. While most synthetic oils are designed to be mixed anywhere from 36:1 to 100:1. Your best bet is to follow the advice of the folks at your dealer as to the type of oil to use - and then follow the recommended mixing ratio as detailed in the oil manufacturer's instructions.

Nov 07, 2009 | 2006 kawasaki KX 125

1 Answer

The oil pump on my 1977 kawasaki ke175 went out, what do I have to do to convert the bike to a premix? And what oil/gas ratio should I use?

Get a new pump if you want; Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock. The pump is in stock at Babbit's @ $104.00.

Otherwise, just drain the oil tank and plug the end (or just remove the tank). Mix the gas and oil in the gas tank 32 to 1. That equals 4 ounces of oil per gallon of gas.

A “very helpful” rating for this answer? Thanks!

Jun 25, 2009 | 1977 kawasaki KE 125

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