SRM-225

General Information:

• Production Dates: 2008-Current
• MSRP: $249.99 (Suggested retail price. Subject to change without notice.)
• Model Number Breakdown: "SRM" Shoulder Rotary Mower, "225" The first two numbers are the engine cc size generally within, plus or minus 1 cc to 2 cc. The last number is the sub-version within that model series
• Replaced Model: SRM-210
• Replaced By Model: N/A
• Uses & Applications: Designed for light to medium duty grass trimming
• Box Dimensions: Length 74 in. Width 12 in. Height 12 in. Weight 17 in.
• Operator's/Safety Manuals, Parts Catalogs: In Business Portal, go to the "Search" tab and enter the model number in the "Item #" field. From there, select the correct document. 
• Accessories: In the Knowledge Base, search the accessory name (for example, "shoulder strap") and view the related article to confirm compatibility with this model.

Features:

• 21.2 cc professional-grade, 2-stroke engine for outstanding performance and durability
• Engine-vibration reduction and rubber handles
• i-30 starting system reduces effort by 30%
• Tool-less access air filtration system for easy and convenient in-field servicing 
• 59 in. straight shaft for long reach
• 17 in. cutting swath increases trimming efficiency

Technical Specifications: For more details on specifications, torque limits, service limits, and special tools, refer to the attached "Service Data." 

• Length: 70.6 in.
• Width: 9.88 in.
• Height: 12.9 in.
• Weight: 11.24 lb.
• Engine Type: Air cooled, two-stroke, single cylinder gasoline engine
• Engine Displacement: 21.2 cc
• Bore: 1.27 in.
• Stroke: 1.02 in.
• Compression Ratio: 6.9 
  
• Ignition Type: CDI (Capacitor discharge ignition)
• Spark Plug: NGK BPM-8Y
  
• Starter: Automatic rewind starter 
• Fuel Tank Capacity: 15.2 fl. oz. 
• Exhaust: Spark arrestor muffler
• Clutch: Centrifugal 
• Drive Shaft: Flexible shaft
• PTO Shaft: 42 mm 
• Gear Case Ratio: 1.62
• Idle Speed: 3,000 RPM
• Wide Open Throttle Speed: 8,700 RPM
• Compression Pressure: 124 PSI
• Primary Coil Resistance: N/A (This model does not have a primary coil resistance because it uses a special spark advance system. Therefore, no primary resistance readings are available for this unit.)  
• Secondary Coil Resistance: 760-1160 ohms