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Topic: Adjusting Isuzu valves (Read 759 times) previous topic - next topic

Adjusting Isuzu valves

While I'm changing the glow plugs is a good time to adjust the valves. What is the
valve clearance. It's a mixed bag as to the clearances on google.

Re: Adjusting Kubota valves

Reply #1 –
I would only go by the manual for yours OR contact manufacturer.

Said another way, I would not trust "if I read it on the internet it must be true" with my valve adjustment specs.

Re: Adjusting Kubota valves

Reply #2 –
The only thing I could find in the manual is when to do valves clearance checks but no
valve clearances.

Re: Adjusting Kubota valves

Reply #3 –
Look on the valve cover decal, if it's still there.

Re: Adjusting Kubota valves

Reply #4 –
Nothing on the valve cover and I have found a manual online and they are 0.20 mm
or 0078 thousand. I put an 8 thousand feeler gage in the first cylinder and they are
quite loose. I will adjust them tomorrow.

Re: Adjusting Kubota valves

Reply #5 –
Peter, valves usually tighten up with age as the valves sink into the seats. Make sure the manual is for your engine.

Re: Adjusting Kubota valves

Reply #6 –
I made a mistake it's a Isuzu engine not a Kubota and is there away to change the
heading.

Re: Adjusting Kubota valves

Reply #7 –
I tried to post the manual but I don't know how. The manual has the right model
number.

Re: Adjusting Isuzu valves

Reply #9 –
Thanks Brett. The valves are adjusted and having the glow plugs out makes it a lot
easier to turn the engine over.

Re: Adjusting Isuzu valves

Reply #10 –
Quote from: oldguy –
Thanks Brett. The valves are adjusted and having the glow plugs out makes it a lot
easier to turn the engine over.


Yup, no compression makes it a LOT easier to turn over.