AH231_10
AH231_12
AH231_11
Assembly: AH231
Disconnect the spark plug boot
and loosen the three engine cover
screws (top screw is captive)
Remove the Cylinder Cover.
1. Remove the spark plug boot.
2. Loosen the three cylinder cover
screws, and then lift off the cylinder
cover.
Connect the Throttle Cable.
Install the black wire between the
two cable adjusters.
Connect the
throttle cable
Cable
Adjuster
Ignition
Ground
Lead
3. Connect the S-shaped end of the
throttle cable to the throttle lever
on top of the carburetor.
See Figure 9.
1. Loop the ribbed cable tube to the
top left side of the engine.
2. Install the black wire between the
two cable adjuster nuts as shown in
Figure 8.
Top
Engine
Cover
Screw
Lower Engine
Cover Screws
Allen
Wrench
Figure 7
Figure 8
Figure 9
11
ASSEMBLY
23139
135-hour Maintnenace
Every 135 hours of operation,
remove and clean the muffler.
4. Remove the two 5 mm muffler
screws. Remove the lower muffler
screw, then lift the muffler assem-
bly from the engine.
5. Remove the rear muffler shield bolt
and, while noting the orientation of
parts, separate the muffler shield.
6. Remove the spark arrester screen
and clean with a stiff bristle brush.
7. Gently tap the muffler on a wood
surface to dislodge any loose
carbon.
8. Inspect the cylinder exhaust port
for carbon buildup.
9. Reassemble the muffler in the
reverse order of disassembly.
Forward
Muffler
Shield
Lower Muffler
Screw
Catalyst
Muffler
5 mm Muffler
Screws
Rear Muffler
Shield
Spark
Arrester
Screen
Rear
Muffler
Shield Bolt
Figure 31
IMPORTANT!
If you note excessive carbon buildup,
consult your servicing dealer.
1. Remove the spark plug boot.
2. Loosen the two 4 mm engine cover
screws (located at the top of the
recoil housing).
3. Loosen the 5 mm engine top cover
screw (the screw is captive) and lift
the cover from the engine.
WARNING!
Never operate the unit with a
damaged or missing muffler or
spark arrester! Operating with
missing or damaged exhaust
components is a fire hazard and
could also damage your hearing.
24
MAINTENANCE
