Craftsman 358.796131- 26.2CC =OPERATING Instructions, Carburetor Adjustments, Spark Plug

D=OPERATING INSTRUCTIONS

For maximum performance and efficiency:

1.Always accelerate the engine to the desired speed before cutting.

2, Never operate the engine at a higher speed than necessary.

3.Always release the trigger and allow the en- gine to return to idle speed when not cutting.

SmENGINE ADJUSTMENTS

1. CARBURETOR ADJUSTMENTS

The carburetorhas been carefully adjusted atthe factory. Due to changesin altitude and operating conditions, your carburetor may require adjusting. To make the adjust- ment follow the procedure below very carefully:

a.PREPARATION

1.) Use fresh fuel mix with proper gasoline/ oil ratio. See "Fuel Mixture", page 7.

2.) Make sure the cutting line extends at least

4 inches to provide correct load on engine.

3.) Remove air filter ( Figure 10) and place under spark plug wire for safe keeping_

4.) Turn both tow speed and high speed mixture

screws clockwise _ untilfully closed, but do not overtighten. Figure 10.Unscrew beth mixture screws one full turn counterclockwise

b.IDLE SPEED ADJUSTMENT

1 .,) Turn Idle Speed Screw clockwise

until it stops. Do not overtighten. Open screw one full turn counterclockwise.

2.) Start the engine and cut grass for 3 min- utes to warm up engine.

3.) Allow engine to idle.

4.) AdjustIdleSpeed Screw untilengine continues to run without stalling and without the cutting head turning.

Turn screw clockwise _ to increase

-engine speed if engine Stalls;

Turn screw counterclockwise -_k'.,_to slow

engine down if cutting head continues to turn.

l CAUTION: JHigh and low speed mixture settings are highly critical adjustments. If set incorrectly per- manent damage will occur to the engine, Both the low speed mix and the high speed mix screws should be in the range of 3/4 to 1-1/4turns open.

4.Make sure the cutting head stops turning when the throttle trigger is released and the engine runs at idle speed, For correction, refer to "Carburetor Adjustments," below_

5.Stop engine by moving the ignition switch to the "OFF" position (Figure 8).

C.LOW SPEED MIXTURE ADJUSTMENT 1 .) Allow engine to =die.

2.) Turn Low Speed Mixture Screw clock-

wise _ slowly. Note the position at which the engine speed is increased.

3.) Turn the screw slowly countercfockwise. JP.,_. Note the position at which the speed is reduced.

4.) Set the screw mid-way between these two extreme :positions.

d. IDLE SPEED ADJUSTMENT

1 .) Allow engine to idle.

2.) Adjust the Idle Speed Screw until the engine idles as fast as possible without the cutting head or blade turning

E-CAUTION:] Do not operate engine at full throttle for prolonged periods while making high speed adjustments as damage to the engine can occur.

e. HIGH SPEED MIXTURE ADJUSTMENT

1 ) Support the shaft so that the cutting head is off the ground and will not contact anv object.

2.) Squeeze throttle trigger wide open

3.) Turn the High Speed MixtureScrew slowly

clockwise _ until the engine speed is reduced. Note position.

4.) Turn the screw slowly counterclockwise _'"_. Stop when the engine just begins

to run rough.

,.5.) Turn the screw slowly.-theminimum amount-clockwise--_p--']l=until the engvne runs smoothly.

f.CHECK ACCELERATION

Allow the engine to idle. Squeeze trigger and

check engine acceleration. If the engine does not accelerate smoothly, you may have to repeat steps "b.3.)" through "e."

NOTE: Generally, by turning the low speed

screw counterclockwise _ a small amount, the unit will accelerate properly.

g. REINSTALL AIR FILTER

tCAUTION: I The air filter must be fitted into the corners of the housing to avoid engine damage.

2.SPARK PLUG

Check spark plug periodically and replaceas necessary.

Set the electrode gap at .025".

Figure 10 9