Toro 325-D, 345 manual Anti-Surge Adjustment, Governor Spread or Sensitivity Adjustment

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TORO GM 345	Ford VSG-411 Gas Engine 15

Anti-Surge Adjustment.

1.Move the throttle rapidly from SLOW to FAST. The engine should not surge, if the engine surges proceed to step 2.

2.Check the V-belts from the engine to the governor pulley and assure that they are tight.

∙The belt is adjusted to 45 lbs of tension on a belt gauge for a new belt.

∙A used belt is re-tensioned to 28 lbs.

∙The replacement belt PN is 67-8510.

3.Loosen the jam nut that retains the anti-surge screw. Rotate the screw clockwise 1/8 of a turn at a time until the surging stops.

4.Check the low and high idle speed to be sure that there is no change in the initial settings. If the idle speed has increased, the anti-surge screw has been turned in too far and it must be backed out.

Other things to check when engine surges:

A. Carburetor too rich or lean.

B. Binding in the throttle linkage.

C. Governor worn internally.

Governor Spread or Sensitivity Adjustment.

Governor spread is the difference between the no load governed speed, and the full load speed. For the governor to work correctly this spread should be 5 to 10 percent.

To check governor spread, check and record the no-load high idle speed and compare this to the loaded high idle speed.

To increase the spread adjust the adjustment bolt to position the spring farther away from the lever hub. To decrease the spread position the spring closer to the hub.

Notes

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Contents Groundsmaster 345/325-D Index Product Overview Toro GM Attachments Ford VSG-411 Gas Engine Engine Identification Toro GM Checking Idle Speeds High and Low Idle ChecksToro GM Ford VSG-411 Gas Engine Correction Carburetor linkage adjustmentToro GM Ford VSG-411 Gas Engine Toro GM High Idle Adjustment Toro GM Governor Spread or Sensitivity Adjustment Anti-Surge AdjustmentToro GM Cylinder Leakage Test Compression TestingSpecial tools Review Questions Mitsubishi K3D Diesel Engine Toro GM 325-D Mitsubishi K3D Diesel Engine Analyzing Diesel Exhaust Smoke Mitsubishi K3D Diesel Engine Troubleshooting Mitsubishi K3D Diesel Engine Troubleshooting Mitsubishi K3D Diesel Engine Injection Nozzles Mitsubishi K3D Diesel Engine Toro GM 325-D Mitsubishi K3D Diesel Engine Toro GM 325-D Mitsubishi K3D Diesel Engine Glow Plug Testing Special Tools Study Questions Hydraulics Toro GM 345 / 325-D Charge Circuit Hydrostatic Drive and Hydraulic SystemsDrive circuit Drive Circuit Acceleration valves Relief Valve Acceleration valvesHydraulics Toro GM 345 / 325-D Low charge pressure Drive Pressure Test Low drive pressure. Charge pressure OK Charge Flow Test Low charge flow charge pressure OK Hydraulics Toro GM 345 / 325-D Steering Circuit Hydraulics Toro GM 345 / 325-D Cutting Unit Lift Circuit Special Tools Study Questions Electrical Systems Toro GM 345 / 325-D Start Circuit. GM 345 Shown, 325-D similar Electrical System GM 345 / 325-DInterlock Circuit Normal Operation Electrical Systems Toro GM 345 / 325-D PTO Engaged, Operator Not In The Seat Electrical Systems Toro GM 345 / 325-D Toro GM 345 / 325-D Electrical Systems Electrical Systems Toro GM 345 / 325-D Seat Switch and Traction Neutral Switch Testing Electrical Systems Toro GM 345 / 325-D Electrical circuit breaker Special Tools Helpful Hints Review Questions Cutting Unit Drive Toro GM 345 / 235-D Attachment Drive PTO Cutting Unit Drive Toro GM 345 / 235-D Troubleshooting Cutting Units Toro GM 345/325-D Rear Discharge & Side Discharge Spindle serviceRecycler Deck Cutting Units Toro GM 345/325-D Inspecting and Sharpening Rotary Mower Blades Quality Of CutCutting Units Toro GM 345/325-D Inconsistent height of cut Mismatch cutSpecial tools Helpful Hints Review Questions Commercial products