/ / Tier 3 / Stage III A  Tier 3 / Stage III A  Three
solutions—because you have your own challenges.  When John Deere
began selecting technologies to meet Tier 3/Stage III A
regulations, we did so with the understanding that different
markets have different needs. Some customers required higher
performance and improved fuel, economy, some just wanted to meet
emissions without sacrificing performance; while others wanted
the lowest possible cost and ease of maintenance. The result is
three distinct solutions: PowerTech Plus, PowerTech E and
PowerTech M.  PowerTech M:Tier 3/Stage III A  4,5L PowerTech M
Compliance for flexibility and cost-savings Following a simple
design, PowerTech M engines (2.4L and 4.5L) use mechanical
controls for optimal performance, while maintaining the
performance standards of Tier 2/Stage II engines. They feature a
new mechanical injection system that generate high injection
pressures and improves combustion efficiency.  PowerTech E  6,8L
PowerTech E Emissions compliance without sacr