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©2012 ICS - Blount Inc, Specifications subject to change without notice. REV11272012 P/N 546529
81
695GC/F4 SERVICE MANUAL
TROUBLESHOOTING
23. This section provides several flowcharts to aid diagnosing common problems.
CHECK
POSSIBLE CAUSE
REPAIR
The engine runs rough at
all speeds.
The engine is overheating.
• Operator is overworking the
saw.
• Carburetor mixture is too
lean.
• Incorrect fuel/oil ratio.
• Flywheel fins are clogged.
• Air deflector is missing.
• Cylinder fins are clogged.
Poor acceleration.
• Dirty or clogged air filter.
• Clogged fuel filter.
• Incorrect carburetor tune.
• Plugged fuel tank breather.
Uneven idle or engine
may “run away”.
• Air leak at intake boot, cylinder
gasket, or crankcase gasket.
• Faulty carburetor diaphragm.
Diamond chain moves
at idle.
• Idle speed too high.
• Broken clutch spring.
Excessive vibration.
• Damaged shock absorber.
• Damaged or broken flywheel fins.
• Bent crankshaft.
• Replace shock absorbers.
• Replace flywheel.
• Replace crankshaft.
• Adjust idle speed.
• Replace clutch spring.
• Inspect air intake boot.
• Pressure test crankcase.
• Replace carburetor.
• Clean or replace the air filter.
• Replace fuel filter.
• See Carburetor Tuning section.
• Repair or replace fuel tank breather.
• See Operator’s Manual.
• See Carburetor Tuning section.
• See Saw Specifications section.
• Clean flywheel fins with wire
brush.
• See Starter Cover section.
• Clean cylinder fins.
• Dirty or clogged air filter.
• Water has been ingested.
• Loose or dirty spark plug.
• Clean or replace the air filter.
• Inspect air intake system for water.
• Inspect fuel system for water.
• Tighten, clean, or replace spark
plug.
YES
A dirty air filter is the #1 reason for engine problems.
23. DIAGRAMS
YES
YES
YES
YES
YES