15
POWER BLOWER
OPERATOR'S MANUAL
COOLING SYSTEMS CLEANING
Level 2.
Tools required: 25 - 50mm (1 - 2 in.) medium bristle paint brush, Cross
Head Screwdriver, Pointed Wood Stick.
Parts Required: None, if you are careful.
IMPORTANT
To maintain proper engine operating temperatures, cooling air
must pass freely through the cylinder fin area. This flow of air
carries combustion heat away from the engine.
Overheating and engine seizure can occur when:
• Air intakes are blocked, preventing cooling air from reaching the
cylinder.
• Dust and grass build up on the outside of the cylinder. This build up
insulates the engine and prevents the heat from leaving.
Removal of cooling passage blockages or cleaning of cooling fins is
considered “Normal Maintenance”. Any failure attributed to lack of
maintenance is not warranted.

Cleaning Grill

1. Remove accumulated debris from intake grill between backpack
frame and blower housing.

Cleaning Cylinder Fins

1. Remove engine cover (four screws), pull cover away from engine.
Clean cylinder fins (A) to allow cooling air to pass freely.
SPARK PLUG
Level 1.
Tools required: 3/4" Spark Plug deep socket, Feeler gauge (preferably a
wire gauge),
Parts Required: Spark Plug, NGK BPMR-8Y P/N A425000000
1. Remove spark plug , and check for fouling, worn and rounded
center electrode.
2. Clean the plug or replace with a new one. DO NOT sand blast to
clean. Remaining sand will damage engine.
3. Adjust spark plug gap by bending outer electrode.
4. Tighten spark plug to 145-155 kg/cm (125-135 in. lb.).
A
0.65 mm
(0.026 in.)