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Integrated lithium starting introduced to Briggs & Stratton’s 500 and 600 Series engine ranges

Published: 13 October 2020 - Neil Mead

Briggs & Stratton extends its integrated InStart® technology to the mid-market on the 575iSi and 675iSi Series engine following the successful market introduction of its 475iSi engine.

Expanding the integrated InStart range


The all new 575iSi and 675iSi Series™ single cylinder, 4-stroke, air–cooled petrol engines, are now available with Briggs & Stratton’s award-winning InStart technology. No priming, choking or pulling is needed to start the engine, the innovative system featuring a lithium-ion battery, is integrated directly into the engine to deliver instant starting.

The iSi engine range is equipped with an integrated lithium-ion battery system that makes charging simple; the battery is non-removable meaning the charging cable connects directly to the engine. One full charge of the lithium-ion battery provides up to 200 starts and will last the whole mowing season*.

OEM customers specifying the 575iSi and 675iSi Series™ InStart® on decks can offer end-users either push-button or key starting options.

Easy mowing

Combining the power and performance of petrol together with starting at a touch, the 575iSi and 675iSi come standard with Briggs & Stratton’s innovative Just Check & Add oil system. With Just Check & Add, easy operation is taken to a new level whereby the engines require no oil changes throughout their operating life - just an occasional top-up.


The 575iSi and 675iSi can also be upgraded to feature the optional Mow N’ Stow® storage technology making storing the mower easier than ever. With Mow N’ Stow the engines allow the user to store the mower vertically, reducing storage space by 70%, and allowing for easier blade access for superior under deck cleaning.

For more information visit

*Based on average consumer usage - up to 200 starts.


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