3gm30 Yanmar Throttle Parts Manual
Posted By admin On 02.02.20Complete Factory Service Repair Workshop Manual. No Extra fees, No Expiry dates. Service Repair Workshop Manual, available for instant download to your computer tablet or smart phone. This Professional Manual covers all repairs, servicing and troubleshooting procedures. It is very detailed and contains hundreds of pages with detailed photos & diagrams.
Yanmar 3hm35f Parts
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As we know diesel engines need heat in the cylinders to ignite/start. Turning the engine over for about 10-15 seconds puts heat into the engine. Let the engine soak in the heat by waiting some seconds before turning it over again.


Heat is what a cold engine needs to start. By setting the throttle to a faster position the engine's compression is set higher creating more pressure and heat. As engines get older compression is lowered, which means getting heat into the cylinder for ignition may take longer. Try different throttle positions for your engine. Engines are all different due to their age and condition.
Click to expand.Hmmm. First of all, 'air-fuel mixture' is a gas-engine term: in a diesel, the AIR is compressed, then diesel is injected, supposedly almost instantaneously vapourized, and burns. Now, in a starting engine I'm guessing the problem is the fuel isn't vapourizing before burning, creating the blue or black smoke. (Anyone who's started a Dickenson diesel stove would know what I mean!). Now, assuming the injection normally starts before TDC, delaying it would mean it would be injected closer to TDC so the air would be more compressed before the fuel enters, which I guess would mean it's more likely to be vapourized before it starts burning. But unlike a gas engine, the throttle setting on a diesel does not vary the amount of air in the cylinder, so therefore does not affect how much compression there is.
Druid - amused that we still call it a 'throttle'.