MAINTENANCE AND REPAIR INSTRUCTIONS (Continued)
CARBURETOR ADJUSTMENT
(Continued)
8.Final Idle Speed Adjustment: Adjust the idle speed by turning the idle speed screw in (clockwise) or out (counterclockwise) until the cutting head does not rotate. Do not squeeze the throttle trigger when adjusting the idle speed screw.
Definition of Optimum Setting for Idle Speed Mixture and High Speed Mixture Adjustments
Always set the idle speed mixture needle and high speed mixture needle at the optimum setting. To find the opti- mum setting, use the following instructions.
1.Turn the adjusting needle out (counterclockwise) from the preliminary setting until the engine speed decreases (rich). Note the position of the needle.
2.Turn the adjusting needle in (clockwise). The engine speed may increase, then it will decrease as the nee- dle is turned in (lean). Note the position of the needle.
3.Set the adjusting needle midway between the rich and lean settings, which is the highest engine speed (Fig. 41).
Lean
Adjust to
Midpoint
Rich
Fig. 41
NOTE: If the carburetor adjustments do not help the unit to run properly, contact your authorized service dealer.
NOTE: If the limiter caps are removed at any time, your unit will no longer meet the1995 California emission regulations and you will void the warranty.
INSPECTING/CLEANING THE MUFFLER
The muffler should be removed every 25 hours of opera- tion to inspect for excessive carbon
Use the following procedure to remove, inspect, clean and reinstall the muffler.
Removing Muffler
1.Remove the three (3) muffler mounting bolts from the cylinder (Fig. 42).
Muffler Mounting |
Bolt |
Muffler Mounting |
Bolt |
Fig. 42
2.Remove the muffler and muffler gasket. Discard the old gasket (Fig. 43).
Muffler |
Muffler Gasket |
Fig. 43
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