Troubleshooting Guide
ENGINE DOES NOT START
Operating Precautions
WARNING!
What To Check
Possible Cause
Remedy
Use Good Judgement
Does the engine crank?
YES
Good compression?
YES
Does the tank contain fresh fuel of the proper grade?
YES
Is fuel visible and moving in the return line when priming?
YES
Is there spark at the spark plug wire terminal?
YES
Check the spark plug.
Faulty recoil starter. NO 
Fluid in the crankcase.
Internal damage.
Loose spark plug. NO 
Excess wear on
cylinder, piston, rings.
Fuel incorrect, stale, or NO 
contaminated; mixture
incorrect.
Check for clogged fuel NO 
filter and/or vent.
The ignition switch NO 
is in “O” (OFF) position.
Shorted ignition ground. Faulty ignition unit.
If the plug is wet, excess 
fuel may be in the
cylinder.
The plug is fouled
or improperly gapped.
The plug is damaged internally or of the
Consult with an authorized servicing dealer.
Tighten and
Refill with fresh, clean unleaded gasoline with a pump octane of 87 or higher mixed with
a
Clean as required; restart.
Move switch to “I” (ON) position and
Crank the engine with the plug removed, reinstall the spark plug, and
Clean and
Replace the spark plug with a Champion CJ8 or equivalent spark
■Make sure the chain and sprocket are correctly adjusted before operating the pruner (see page 15 for adjustment procedures). Never attempt chain adjustment with the engine running!
■Always make sure the cutting attachment is properly installed and firmly tightened before operation.
■Never use a cracked or warped guide bar: replace it with a serviceable guide bar and make sure it fits properly.
■If a saw blade should bind fast in a cut, shut off the engine immediately. Push the branch or tree to ease the bind and free the blade.
■Make sure there are no missing or loose fasteners, and that the ignition switch and throttle controls are working properly.
■Before starting the engine, make sure the saw chain is not contacting anything.
■Make sure there is always good ventilation when operat- ing the pruner. Fumes from engine exhaust can cause serious injury or death. Never run the engine indoors!
■Do not operate the pole pruner with the muffler removed.
■When cutting a limb that is under tension, be alert for springback so that you will not be struck by the moving limb.
■Always stop the engine immediately and check for damage if you strike a foreign object or if the unit becomes tangled. Do not operate with broken or damaged equipment.
■Stop the unit immediately if it suddenly begins to vibrate or shake. Inspect for broken, missing or improperly in- stalled parts or attachments.
■Never transport the pruner nor set it down with the engine running. An engine that’s running could be accidentally accelerated causing the chain to rotate.
SAFETY
wrong size.
plug of the correct heat range.
Adjust the spark plug electrode gap to
WARNING!
Minimize the Risk of Fire
TROUBLESHOOTING |
■NEVER smoke or light fires near the unit.
■ALWAYS stop the engine and allow it to cool before refuel- ing. Avoid overfilling and wipe off any fuel that may
have spilled.
■ALWAYS move the unit to a place well away from a fuel storage area or other readily flammable materials before starting the engine.
■ALWAYS inspect the unit for fuel leaks before each use. During each refill, check that no fuel leaks from around the fuel cap and/or fuel tank. If fuel leaks are evident, stop using the unit immediately. Fuel leaks must be repaired before using the unit.
■NEVER place flammable material close to the engine muffler.
■NEVER run the engine without the spark arrester screen in place.
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