©2017 ICS - Blount Inc, Specications subject to change without notice. REV19JUNE2017 P/N 598901
79
695XL SERVICE MANUAL
23. This section provides several flowcharts to aid diagnosing
common problems.
The engine
runs rough at all
speeds.
The engine is
overheating.
• Operator is overworking
the power cutter.
•
C
arburetor mixture is too
lean.
•
In
correct fuel/oil ratio.
•
Flywheel fins are clogged.
•
A
ir deflector is missing.
•
C
ylinder fins are clogged.
Poor acceleration.
• Dirty or clogged air filter.
•
C
logged fuel filter.
•
I
ncorrect carburetor tune.
•
P
lugged 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.
•
D
amaged or broken
flywheel fins.
•
Be
nt crankshaft.
• Replace shock
absorbers.
•
R
eplace flywheel.
•
R
eplace crankshaft.
• Adjust idle speed.
•
Replace clutch spring.
• Inspect air intake boot.
•
P
ressure test
crankcase.
•
R
eplace carburetor.
• Clean or replace the air
filter.
•
R
eplace fuel filter.
•
S
ee Carburetor Tuning
section.
•
Repair or replace fuel
tank breather.
• See Operator’s Manual.
•
See Carburetor Tuning
section.
•
See Power Cutter
Specifications section.
•
Clean flywheel fins with
wire brush.
•
See Starter Cover
section.
•
Clean cylinder fins.
• Dirty or clogged air filter.
•
W
ater has been ingested.
•
L
oose or dirty spark plug.
• Clean or replace the air
filter.
•
I
nspect air intake
system for water.
•
I
nspect fuel system for
water.
•
T
ighten, clean, or
replace spark plug.
A dirty air filter is the #1 reason for engine problems.
YES
YES
YES
YES
YES
YES
23. DIAGRAMS
CHECK
POSSIBLE CAUSE
REPAIR