Tech Tip #46: Starting Wisconsin Engines With High Loads

Great tip on starting your Wisconsin Engine under a high load

Recently, some of our customers have told us that Wisconsin engines with high accessory loads may benefit from a new starting procedure, one different than what is specified in the operators’ manual. The high shock loads that inhibit easy starting are due to hydraulics, fans, etc., that are not disengaged prior to starting. They prevent the engine from easily getting up to speed. This Tech Tip will remind some mechanics of the compression release process in older, hand start diesels.

To enable the engine to get to the optimum speed:

1. Make sure the throttle is fully shut and the choke is off (plate open).
2. Engage the starter, spin engine for 3 seconds to allow engine speed to increase, then pull back in when the engine fires. The choke plate should not have to be closed for more than several seconds, even in cold climates. Do not use ether.
3. If the engine stalls, repeat the procedure, this time pushing the choke in more slowly after the engine fires.
4. Choking may not be necessary for hot restarts. If required, use only a quick pull of the choke after the engine is spinning, with an immediate return to the open position.

Foley Engines, your Wisconsin engine specialist, wants to help. Please call us with any questions on this Tech Tip. If you need more details, we have workshop manuals ready to mail out to you. If your engine is too far gone, we have new and remanufactured engines on the shelf ready to shop with next day delivery available. New and remanufactured Wisconsin power units, too. Please call us with any questions.

Written by Dr. Diesel

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