Benefits of Spring Starting Spring starters provide guaranteed starting. Because they are manually operated, engine starting is not affected by extended downtime, humidity, cold, or harsh environments. Reliability. Many spring starters are still in operation after decades of use, a long, proven track record. Space and weight savings. Spring starters start at 100 lbs. 18 kg, less than 50% of the weight of a traditional electric starter. Operator safety. When using a spring, the crank will not fly out or recoil during operation, and the motor can be unfastened if not needed. Ease of Use. Spring starters are a direct "bolt-on" alternative to electric starters, making installation quick and easy. Reduced battery costs. For certain applications, such as pumps, welders, and generator sets, springs can completely eliminate the need for batteries. Reduced electricity costs. Without an electric starter, a lightweight alternator can be installed, or the existing alternator can be used longer.