briggs--stratton 5900302 用户手册

Troubleshooting, Adjustment & Service

 1.  Park the machine on a smooth level surface such 

as a concrete floor.  Disengage the PTO, engage 
the parking brake, turn off the engine and remove 
the ignition key.

 2.  Lower the mower deck to its lowest cutting 

position.

 3.  Use the Mower Belt Idler Spring Length chart to 

determine the correct spring length (E, Figure 54).

 4.  Measure the coil length of the mower belt 

tensioner spring (A,).  The measurement should 
equal the measurement as designated in the 
chart.  If the measurement does not equal the 
measurement as designated in the chart, adjust 
the anchor eyebolt (B).

 1.  Loosen the jam nut (C).

 2.  Turn the adjustment nut (D) until a measurement 

as designated in the chart is achieved.

 3.  Retighten the jam nut.

61” Mower Deck

7

17,8

72” Mower Deck

6-1/4

15.9

A voltmeter can be used to determine condition of 
battery. When engine is off, the voltmeter shows 
battery voltage, which should be 12 volts. When 
engine is running, the voltmeter shows voltage of 
charging circuit which normally is 13 to 14 volts.

A dead battery or one too weak to start the engine 
may not mean the battery needs to be replaced. 
For example, it may mean that the alternator is not 
charging the battery properly. If there is any doubt 
about the cause of the problem, see your dealer. 
If you need to replace the battery, follow the steps 
under Cleaning the Battery & Cables in the Regular 
Maintenance Section.

 1.  Be aware of all the safety precautions you should 

observe during the charging operation. If you are 
unfamiliar with the use of a battery charger and 
hydrometer, have the battery serviced by your 
dealer.

 2.  Add distilled water sufficient to cover the plate (fill 

to the proper level near the end of the charge). 
If the battery is extremely cold, allow it to warm 
before adding water because the water level will 
rise as it warms. Also, an extremely cold battery 
will not accept a normal charge until it becomes 
warm.

 3.  Always unplug or turn the charger off before 

attaching or removing the clamp connections.

 4.  Carefully attach the clamps to the battery in 

proper polarity (usually red to [+] positive and 
black to [-] negative).

 5.  While charging, periodically measure the 

temperature of the electrolyte. If the temperature 
exceeds 125° F (51.6° C), or if violent gassing or 
spewing of electrolyte occurs, the charging rate 
must be reduced or temporarily halted to prevent 
battery damage.

Not 

for  

Reproduction