Husqvarna PT-26D Operator's Manual page 66

Driving
Starting with a weak battery
WARNING:
Lead-acid batteries produce explosive gases. Avoid
sparks, open flames and smoking close to batteries.
Always wear protective glasses in the vicinity of
batteries.
If the battery is too weak to start the engine, it should
be recharged.
If jump leads are used for emergency starting, follow
the procedure below:
IMPORTANT INFORMATION:
Your Rider is equipped with a 12-volt system with
negative earth. The other vehicle must also have a 12-
volt system with negative earth. Do not use your lawn
mower battery to start other vehicles.
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