
Safety Equipment and Labels
Troubleshooting Guide (continued)
LOW POWER OUTPUT
What To Check | Possible Cause |
Remedy
Is the engine overheating?
Engine is rough at all speeds. May also have black smoke and/or unburned fuel at the exhaust.
Operator is overworking the machine.
Carburetor mixture is too lean.
Improper fuel ratio.
Fan, fan cover, cylinder fins dirty or damaged.
Carbon deposits on the piston or in the muffler.
Clogged air cleaner
element.
Loose or damaged spark plug.
Shorten trimmer line. Cut at a slower rate.
Consult with an authorized servicing dealer.
Refill with fresh, clean unleaded gasoline with a pump octane of 87 or higher mixed with
a
Clean, repair or replace as necessary.
Consult with an authorized servicing dealer.
Service the air cleaner.
Tighten or replace.
Replace the spark plug with a Champion CJ8 or equivalent spark plug of the correct heat range.
Adjust the spark plug electrode gap to
SAFETY
Shaft Safety Label
High Voltage Label
Ignition
Switch
Throttle
Interlock
IMPORTANT!
Safety and Operation Information Labels: Make sure all information labels are undamaged and readable. Immediately replace damaged or missing information labels. New labels are available from your local autho- rized Shindaiwa dealer.
Figure 2
6
| Air leakage or clogged | Repair or replace fuel |
| fuel line. | filter and/or fuel line. |
| Water in the fuel. | Refill with fresh, clean unleaded |
|
| gasoline with a pump octane |
|
| of 87 or higher mixed with |
|
| a |
|
| meets or exceeds |
|
| and/or JASO FC classified oils at |
|
| 50:1 gasoline/oil ratio. |
| Piston seizure. | Consult with an authorized |
|
| servicing dealer. |
| Faulty carburetor and/ | Consult with an authorized |
| or diaphragm. | servicing dealer. |
Engine is | Overheating condition. | See above. |
|
| |
knocking. | Improper fuel. | Check fuel octane rating; |
|
| check for presence of |
|
| alcohol in the fuel (pg. 18). |
|
| Refuel as necessary. |
| Carbon deposits in the | Consult with an authorized |
| combustion chamber. | servicing dealer. |
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TROUBLESHOOTING